[Branch,~linaro-validation/lava-dispatcher/trunk] Rev 659: Landing MultiNode.

Message ID 20130828145925.2957.70813.launchpad@ackee.canonical.com
State Accepted
Headers show

Commit Message

Neil Williams Aug. 28, 2013, 2:59 p.m.
Merge authors:
  Fu Wei (fu-wei)
  Neil Williams (codehelp)
  Senthil Kumaran S (stylesen)
Related merge proposals:
  https://code.launchpad.net/~linaro-automation/lava-dispatcher/multinode/+merge/181233
  proposed by: Neil Williams (codehelp)
  review: Approve - Neil Williams (codehelp)
  review: Needs Fixing - Antonio Terceiro (terceiro)
------------------------------------------------------------
revno: 659 [merge]
committer: Neil Williams <neil.williams@linaro.org>
branch nick: lava-dispatcher
timestamp: Wed 2013-08-28 15:55:50 +0100
message:
  Landing MultiNode.
  
  pending merges:
    Neil Williams 2013-08-28 [merge] Fu Wei 2013-08-27 multinode review:Fix a bug about using 'printf'
      Fu Wei 2013-08-27 multinode review:Fix a bug about using 'printf'
      Fu Wei 2013-08-26 multinode review: make 'waiting message ack' be supported, only if the shell script is running in bash
      Fu Wei 2013-08-26 multinode review: delete some bash-specific syntax for multinode API shell scripts
      Neil Williams 2013-08-27 [merge] Neil Williams 2013-08-27 Fix LNG result bundle aggregation error with
      Neil Williams 2013-08-27 Fix LNG result bundle aggregation error with measurements.
      Neil Williams 2013-08-27 Merge from tip 657:
      Neil Williams 2013-08-24 [merge] Neil Williams 2013-08-23 Add debugging help page.
      Neil Williams 2013-08-23 Add debugging help page.
      Neil Williams 2013-08-23 Add details of how to use the API in the use case.
      Neil Williams 2013-08-23 Add hrefs and a section on installing packages.
      Neil Williams 2013-08-23 Add debugging page and section on balancing timeouts.
      Neil Williams 2013-08-23 Add internal hrefs to make it easier to link from examples.
      Neil Williams 2013-08-24 [merge] Neil Williams 2013-08-23 Add the stream parameter to the pending call so
      Neil Williams 2013-08-23 Add the stream parameter to the pending call so that it can be passed down to put_pending over xmlrpc.
      Neil Williams 2013-08-23 Add the stream parameter to the pending call so that it can be passed down to put_pending over xmlrpc.
      Neil Williams 2013-08-24 [merge] Neil Williams 2013-08-23 Drop PyCharm inspection comment.
      Neil Williams 2013-08-23 Drop PyCharm inspection comment.
      Neil Williams 2013-08-23 Set the context once in __init__ instead of each time in the handler.
      Neil Williams 2013-08-23 Set the context once in __init__ instead of each time in the handler.
      Neil Williams 2013-08-23 Drop PyCharm inspection comment.
      Neil Williams 2013-08-23 Move delay into a local function variable.
      Neil Williams 2013-08-23 [merge] Fu Wei 2013-08-23 Fix the bug of disabling debug info in multi-node API
      Fu Wei 2013-08-23 Fix the bug of disabling debug info in multi-node API shell scritps
      Neil Williams 2013-08-21 Apply missing changes from tip
      Neil Williams 2013-08-21 Apply missing change from tip
      Neil Williams 2013-08-21 remove files removed in tip
      Neil Williams 2013-08-21 Apply missing change from tip - retaining the update to allow iMX53 to work with updated dispatcher code.
      Neil Williams 2013-08-21 Apply missing change from tip
      Neil Williams 2013-08-20 [merge] Neil Williams 2013-08-19 Bump version in preparation for merge into tip.
      Neil Williams 2013-08-19 Bump version in preparation for merge into tip.
      Neil Williams 2013-08-19 Add two use cases covering steps from requirements to LAVA filtering of results.
      Neil Williams 2013-08-20 Output an error message if the bundle could not be parsed.
      Neil Williams 2013-08-16 [merge] Fu Wei 2013-08-16 Fix the disappearance of the result bundle link in the
      Fu Wei 2013-08-16 Fix the disappearance of the result bundle link in the log_file page problem for multinode
      Neil Williams 2013-08-15 [merge] Neil Williams 2013-08-12 Update multinode branch from tip
      Neil Williams 2013-08-12 Update multinode branch from tip
      Neil Williams 2013-08-12 [merge] Neil Williams 2013-08-09 Trim the debug output.
      Neil Williams 2013-08-12 [merge] Neil Williams 2013-08-08 Expand the notes to cover the persistence of me...
      Neil Williams 2013-08-12 [merge] Neil Williams 2013-08-06 Fix wait-all - needs lava-coordiantor 0.1.3
      Neil Williams 2013-08-12 [merge] Neil Williams 2013-08-05 Trim debug messages and reduce the size limit to
      Neil Williams 2013-08-15 [merge] Neil Williams 2013-08-09 Trim the debug output.
      Neil Williams 2013-08-09 Trim the debug output.
      Neil Williams 2013-08-09 Trim the debug output and make the formats consistent.
      Neil Williams 2013-08-09 [merge] Neil Williams 2013-08-06 Fix wait-all - needs lava-coordiantor 0.1.3
      Neil Williams 2013-08-09 [merge] Neil Williams 2013-08-05 Trim debug messages and reduce the size limit to
      Neil Williams 2013-08-15 [merge] Neil Williams 2013-08-08 Expand the notes to cover the persistence of
      Neil Williams 2013-08-08 Expand the notes to cover the persistence of message data.
      Neil Williams 2013-08-15 [merge] Neil Williams 2013-08-06 Fix wait-all - needs lava-coordiantor 0.1.3
      Neil Williams 2013-08-06 Fix wait-all - needs lava-coordiantor 0.1.3
      Neil Williams 2013-08-06 [merge] Neil Williams 2013-08-05 Trim debug messages and reduce the size limit to
      Neil Williams 2013-08-15 [merge] Neil Williams 2013-08-05 Trim debug messages and reduce the size limit to
      Neil Williams 2013-08-05 Trim debug messages and reduce the size limit to
      Neil Williams 2013-08-05 Result bundle aggregation support.
      Neil Williams 2013-08-05 Result bundle aggregation support via XMLRPC to avoid
      Neil Williams 2013-08-05 Drop debug message.
      Neil Williams 2013-08-01 [merge] Neil Williams 2013-08-01 Retrieve the individual bundles, let the coordinator
      Neil Williams 2013-08-01 Retrieve the individual bundles, let the coordinator 
      Neil Williams 2013-08-01 Split up the run subroutine to allow the bundles to be collated
      Neil Williams 2013-08-01 Support bundle aggregation and trim the debug output to
      Neil Williams 2013-08-01 [merge] Fu Wei 2013-08-01 Fix the bugs of the error code(nack) processing in lava
      Fu Wei 2013-08-01 Fix the bugs of the error code(nack) processing in  lava multi-node API
      Neil Williams 2013-08-01 [merge] Neil Williams 2013-07-30 Add a note to the docs that the API is not intended
      Neil Williams 2013-07-30 Add a note to the docs that the API is not intended for large messages or file transfers.
      Neil Williams 2013-08-01 [merge] Fu Wei 2013-07-31 fix lava-sync bug for message delivery
      Fu Wei 2013-07-31 fix lava-sync bug for message delivery
      Neil Williams 2013-07-31 [merge] Fu Wei 2013-07-31 Add basic error code(nack) processing support into lava multi-node API
      Fu Wei 2013-07-31 Add basic error code(nack) processing support into lava multi-node API
      Neil Williams 2013-07-29 [merge] Fu Wei 2013-07-29 Add lava-network support for multi-node test
      Fu Wei 2013-07-29 Add lava-network support for multi-node test
      Neil Williams 2013-07-29 [merge] Neil Williams 2013-07-26 Implement a length-prefix for the communication
      Neil Williams 2013-07-26 Implement a length-prefix for the communication protocol
      Neil Williams 2013-07-26 [merge] Neil Williams 2013-07-24 Pass the return value back to signals for processing.
      Neil Williams 2013-07-26 [merge] Neil Williams 2013-07-23 Drop the old groupdispatcher setup, now external in lava-coordinator.
      Neil Williams 2013-07-29 [merge] Neil Williams 2013-07-24 Pass the return value back to signals for processing
      Neil Williams 2013-07-24 Pass the return value back to signals for processing.
      Neil Williams 2013-07-24 Return a value on a "nack" message so that the job can be failed on certain MultiNode calls.
      Neil Williams 2013-07-24 Implement timeout support inside the NodeDispatcher
      Neil Williams 2013-07-24 Add notes on multinode timeout behaviour.
      Neil Williams 2013-07-24 [merge] Neil Williams 2013-07-23 Drop the old groupdispatcher setup, now external in lava-coordinator.
      Neil Williams 2013-07-29 [merge] Neil Williams 2013-07-23 Drop the old groupdispatcher setup, now external
      Neil Williams 2013-07-23 Drop the old groupdispatcher setup, now external in lava-coordinator.
      Neil Williams 2013-07-23 Adapt to an external LAVA coordinator, read the
      Neil Williams 2013-07-23 Move the group dispatcher runtime into a separate daemon process.
      Neil Williams 2013-07-23 Introduce LAVA coordinator and document some requirements.
      Neil Williams 2013-07-22 [merge] Neil Williams 2013-07-18 Fix blocksize issue which was truncating long
      Neil Williams 2013-07-18 Fix blocksize issue which was truncating long messages.
      Neil Williams 2013-07-18 Fix blocksize issue which was truncating long messages.
      Neil Williams 2013-07-18 Fix the iMX53 config to update to tip behaviour.
      Neil Williams 2013-07-18 Fix calculation of the number of key=value pairs in the debug output.
      Neil Williams 2013-07-22 [merge] Neil Williams 2013-07-18 Add documentation and advice on the hardware
      Neil Williams 2013-07-18 Add documentation and advice on the hardware requirements of a MultiNode instance.
      Neil Williams 2013-07-18 Add nice calls to external processes which cause a lot of load to reduce the implications of MultiNode on simultaneous I/O.
      Neil Williams 2013-07-18 [merge] Bring shared multinode branch into line with tip.
      Neil Williams 2013-07-18 [merge] Neil Williams 2013-07-17 Remaining PEP8 changes to match tip
      Neil Williams 2013-07-17 Remaining PEP8 changes to match tip
      Neil Williams 2013-07-18 Add change described in the merge proposal comments - make the equivalent change in wait as was made in wait_all
      Neil Williams 2013-07-18 [merge] Neil Williams 2013-07-14 Relocate the work to handle key value pair information into the send function instead of wait_all
      Neil Williams 2013-07-14 Relocate the work to handle key value pair information into the send function instead of wait_all so that the work can be done in a simpler way without n...
      Neil Williams 2013-07-14 [merge] Fu Wei 2013-07-10 Fix return message format problem of lava-wait-all
      Fu Wei 2013-07-10 Fix return message format problem of lava-wait-all
      Neil Williams 2013-07-10 [merge] Neil Williams 2013-07-05 fix wait_all behaviour for the fixed message structure.
      Neil Williams 2013-07-05 fix wait_all behaviour for the fixed message structure.
      Neil Williams 2013-07-05 Collate all of the data for all devices in this role and
      Neil Williams 2013-07-03 Debug tweaks
      Neil Williams 2013-07-03 Deepcopy the message for each client with the same role
      Neil Williams 2013-07-03 [merge] Fu Wei 2013-07-03 Fix return message format problem of lava-wait and do some prepare for lava-wait-all
      Fu Wei 2013-07-03 Fix return message format problem of lava-wait and do some prepare for lava-wait-all
      Neil Williams 2013-07-03 [merge] There are no changes in the device-types files, it's just an artefact
      Neil Williams 2013-07-03 [merge] Neil Williams 2013-07-03 fix wait_all to send wait_all instead of wait when using a role.
      Neil Williams 2013-07-03 Adjust debug messages
      Neil Williams 2013-07-03 Move debug message out of info log
      Neil Williams 2013-07-03 Drop twisted from requirements, no longer used.
      Neil Williams 2013-07-03 Bring branch into line with multinode and tip
      Neil Williams 2013-07-03 fix wait_all to send wait_all instead of wait when using a role.
      Neil Williams 2013-07-03 Adopt Fu Wei's change, already merged
      Neil Williams 2013-07-03 fix false notification of a MultiNode test due to broken insertion of the logging check inside an existing conditional block.
      Neil Williams 2013-07-02 bring my personal branch into line with shared branch - including the multi-node shell lib.
      Neil Williams 2013-07-02 bring my personal branch into line with shared branch.
      Neil Williams 2013-07-03 [merge] Neil Williams 2013-07-03 fix wait_all to send wait_all instead of wait when using a role.
      Neil Williams 2013-07-03 fix wait_all to send wait_all instead of wait when using a role.
      Neil Williams 2013-07-02 Reduce the timeout to a sane level for the task of starting the bootloader.
      Neil Williams 2013-07-02 Ensure lava_wait sends a useful messageID
      Neil Williams 2013-07-02 Add note about making lava_wait_all and lava_send calls consistent.
      Neil Williams 2013-07-03 [merge] Senthil Kumaran 2013-07-03 [merge] Bring up-to-date with trunk.
      Senthil Kumaran 2013-07-03 [merge] Bring up-to-date with trunk.
      Neil Williams 2013-07-03 [merge] Fu Wei 2013-07-03 Fix a bug in getting info from job_data(job type detection)
      Fu Wei 2013-07-03 Fix a bug in getting info from job_data(job type detection)
      Neil Williams 2013-07-02 [merge] Fu Wei 2013-07-02 Do some modification in Multi-Node API specification for lava-wait*
      Fu Wei 2013-07-02 Do some modification in Multi-Node API specification for lava-wait*
      Fu Wei 2013-07-02 Fix the lava-wait* API Shell script problem
      Fu Wei 2013-07-02 Improve LAVA Multi-Node API shell script debug output
      Neil Williams 2013-07-02 [merge] Neil Williams 2013-07-01 Write out the return value into the output of the request.
      Neil Williams 2013-07-01 Write out the return value into the output of the request.
      Neil Williams 2013-07-01 Pass the return value of each request up the chain 
      Neil Williams 2013-07-01 Expand the code to make the debug clearer.
      Neil Williams 2013-07-01 Ensure GroupDispatcher continues running if 
      Neil Williams 2013-06-28 Fix the group_data handling to write out data on all members of the group.
      Neil Williams 2013-06-28 Pass the group data to the test shell using the context.
      Neil Williams 2013-06-28 Allow the context to carry arbitrary group data for MultiNode.
      Neil Williams 2013-06-28 Handle the group_data response and pass it down to the Job.
      Neil Williams 2013-06-28 Send the group_data back instead of an Ack
      Neil Williams 2013-07-01 [merge] Neil Williams 2013-06-28 Add docs on the changes to the JSON for Multi-Node submissions
      Neil Williams 2013-06-28 Add docs on the changes to the JSON for Multi-Node submissions
      Neil Williams 2013-06-28 [merge] Neil Williams 2013-06-28 Add docs on the changes to the JSON for Multi-Node submissions
      Neil Williams 2013-06-28 Add docs on the changes to the JSON for Multi-Node submissions
      Neil Williams 2013-06-27 allow the message to be passed unchanged as it can be more than a simple string.
      Neil Williams 2013-06-27 Fix typo in type used with append.
      Neil Williams 2013-06-27 Add handling for the key=value pairs used by lavaSend
      Neil Williams 2013-06-27 [merge] Neil Williams 2013-06-27 Make the handlers compliant with the MultiNode API, on_WAIT does not take a message and on_WAIT_ALL takes an optional ro...
      Neil Williams 2013-06-27 Make the handlers compliant with the MultiNode API, on_WAIT does not take a message and on_WAIT_ALL takes an optional role parameter.
      Neil Williams 2013-06-27 simplify the node polling delay step
      Neil Williams 2013-06-27 [merge] Neil Williams 2013-06-27 Cache the current connection inside the GeneratorContextManager instead of trying to start another one.
      Neil Williams 2013-06-27 Cache the current connection inside the GeneratorContextManager instead of trying to start another one. Fixes problem with calling power_on inside the _o...
      Neil Williams 2013-06-27 make the debug more helpful
      Neil Williams 2013-06-27 [merge] Senthil Kumaran 2013-06-27 [merge] Bring up-to-date with trunk.
      Senthil Kumaran 2013-06-27 [merge] Bring up-to-date with trunk.
      Neil Williams 2013-06-26 [merge] Merge the debug change branch
      Neil Williams 2013-06-26 Fix missing handdown of the context to the test shell.
      Neil Williams 2013-06-26 Add echo statements to follow the sequence within
      Neil Williams 2013-06-26 Add echo statements to follow the sequence within
      Neil Williams 2013-06-26 Add debug for the number of bytes written.
      Neil Williams 2013-06-26 Add logging for the test shell results
      Neil Williams 2013-06-26 Finalise the debug statements at usable levels.
      Neil Williams 2013-06-26 Clean up the debug statements
      Neil Williams 2013-06-26 [merge] merge the node-board comms branch.
      Neil Williams 2013-06-25 Add the rest of the primitives for Node-board comms by extending LavaContext to carry to callable transport object
      Neil Williams 2013-06-25 fix the lavaSync code to clear sync data when all clients have had their sync message.
      Neil Williams 2013-06-26 [merge] Apply Fu Wei's branch merge
      Fu Wei 2013-06-26 improve Multi-Node API Shell script
      Neil Williams 2013-06-25 [merge] merge branch to fix signal handler error.
      Fu Wei 2013-06-25 fix a bug for handle multi-node signals
      Neil Williams 2013-06-25 [merge] merge branch to add role to actions
      Senthil Kumaran 2013-06-25 Add role to each action parameter schema.
      Neil Williams 2013-06-25 [merge] merge branch
      Fu Wei 2013-06-25 improve LAVA Multi-Node API message patterns, add message handle framework in dispatcher side
      Neil Williams 2013-06-25 [merge] merge the bug fix branch.
      Neil Williams 2013-06-24 target_group no longer contains sub-fields, target and role are discrete values and hostname is actually target.hostname in the incoming data.
      Neil Williams 2013-06-24 group_size is an integer in the schema but must be a string inside the attributes, so convert it.
      Neil Williams 2013-06-24 clarify the JSON structure for messages
      Neil Williams 2013-06-24 [merge] merge bug fixes for lava_test_shell.py
      Neil Williams 2013-06-24 Fix syntax errors in lava_test_shell.py and make the sample transport message valid for the receiver.
      Neil Williams 2013-06-24 [merge] Fu Wei 2013-06-21 add multi-node API shell script file and API file injection support
      Fu Wei 2013-06-21 add multi-node API shell script file and API file injection support
      Neil Williams 2013-06-24 [merge] merge codehelp branch to migrate from twisted
      Neil Williams 2013-06-21 Migrate from twisted to re-usable sockets via polling. Ensure all socket calls are locally scoped and refreshed every time through the loop to allow reco...
      Neil Williams 2013-06-21 fix typo in the job schema for group_size
      Neil Williams 2013-06-20 [merge] Apply the merge
      Neil Williams 2013-06-20 Add the LavaTestJob run code into NodeDispatcher so that the job runs inside the client reactor. Pass the necessary data down and allow the LavaContext t...
      Neil Williams 2013-06-20 Handle exceptions due to empty or non-JSON data being received by the GroupDispatcher.
      Neil Williams 2013-06-20 Update requirements due to MultiNode comms.
      Neil Williams 2013-06-20 Add twisted to setup.py for installation requirements due to MultiNode comms.
      Neil Williams 2013-06-20 [merge] Merge stylesen's branch for the job schema in multinode
      Senthil Kumaran 2013-06-20 Add device_group to job schema.
      Neil Williams 2013-06-18 [merge] Apply changes from trunk by Antonio Terceiro
      Neil Williams 2013-06-18 allow group_dispatcher and target_group to setup a MultiNode dispatcher
      Neil Williams 2013-06-18 Allow nodes to self-register with the GroupDispatcher
      Neil Williams 2013-06-18 Add group_size support
      Neil Williams 2013-06-12 Add support for the current MultiNode API
      Neil Williams 2013-06-12 fix typo
      Neil Williams 2013-06-12 Add Antonio's Multinode API to the docs.
      Neil Williams 2013-06-12 Add hostname to the group_data and add a lava_sync primitive
      Neil Williams 2013-06-11 Add MultiNode support classes: GroupDispatcher and NodeDispatcher. Define added fields in the job schema.
removed:
  lava_dispatcher/default-config/lava-dispatcher/device-types/aa9.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/capri.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/nexus10.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_foundation-armv8.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x1-a7x1.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x4-a7x4.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-armv8.conf
  lava_dispatcher/tests/test-config/bin/
  lava_dispatcher/tests/test-config/bin/fake-qemu
added:
  doc/debugging.rst
  doc/multinode-usecases.rst
  doc/multinode.rst
  doc/multinodeapi.rst
  doc/usecaseone.rst
  doc/usecasetwo.rst
  lava/dispatcher/node.py
  lava_dispatcher/default-config/lava-dispatcher/device-types/aa9.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/capri.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/nexus10.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_foundation-armv8.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x1-a7x1.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x4-a7x4.conf
  lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-armv8.conf
  lava_dispatcher/tests/test-config/bin/
  lava_dispatcher/tests/test-config/bin/fake-qemu
  lava_test_shell/multi_node/
  lava_test_shell/multi_node/lava-group
  lava_test_shell/multi_node/lava-multi-node.lib
  lava_test_shell/multi_node/lava-network
  lava_test_shell/multi_node/lava-role
  lava_test_shell/multi_node/lava-self
  lava_test_shell/multi_node/lava-send
  lava_test_shell/multi_node/lava-sync
  lava_test_shell/multi_node/lava-wait
  lava_test_shell/multi_node/lava-wait-all
modified:
  doc/conf.py
  doc/index.rst
  lava/dispatcher/commands.py
  lava_dispatcher/__init__.py
  lava_dispatcher/actions/deploy.py
  lava_dispatcher/actions/launch_control.py
  lava_dispatcher/actions/lava_test_shell.py
  lava_dispatcher/config.py
  lava_dispatcher/context.py
  lava_dispatcher/default-config/lava-dispatcher/device-types/mx53loco.conf
  lava_dispatcher/device/master.py
  lava_dispatcher/downloader.py
  lava_dispatcher/job.py
  lava_dispatcher/signals/__init__.py
  lava_dispatcher/tests/test_device_version.py
  lava_dispatcher/utils.py
  requirements.txt
  setup.py


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Patch

=== modified file 'doc/conf.py'
--- doc/conf.py	2013-07-17 09:16:24 +0000
+++ doc/conf.py	2013-08-19 10:36:46 +0000
@@ -60,9 +60,9 @@ 
 # built documents.
 #
 # The short X.Y version.
-version = '0.23'
+version = '0.32'
 # The full version, including alpha/beta/rc tags.
-release = '0.23'
+release = '0.32'
 
 # The language for content autogenerated by Sphinx. Refer to documentation
 # for a list of supported languages.

=== added file 'doc/debugging.rst'
--- doc/debugging.rst	1970-01-01 00:00:00 +0000
+++ doc/debugging.rst	2013-08-23 10:25:49 +0000
@@ -0,0 +1,119 @@ 
+.. _debugging:
+
+Debugging LAVA test definitions
+*******************************
+
+.. _singlenode:
+
+Convert Multi-Node jobs to single node
+======================================
+
+The scripts available in the :ref:`multinode_api` are not installed for
+test jobs which are not part of a MultiNode group, so the job will simply
+fail that test as a ``command not found``.
+
+Therefore, by reversing the :ref:`changes_to_json`, a MultiNode JSON file
+can be converted to singlenode.
+
+Other calls which may require communication with other devices may need
+to be removed from your YAML. This can be extended to retain a set of
+singlenode YAML files in which new wrapper scripts and new builds are
+tested.
+
+The Job Definition of one job within a MultiNode group may be a good
+starting point for creating a singlenode equivalent.
+
+.. _set_x:
+
+Always use set -x in wrapper scripts
+====================================
+
+By viewing the complete log, the complete processing of the wrapper script
+becomes obvious.
+
+::
+
+ #!/bin/sh
+ set -e
+ set -x
+
+.. _shell_operators:
+
+Avoid using shell operators in YAML lines
+=========================================
+
+Pipes, redirects and nested sub shells will not work reliably when put
+directly into the YAML. Use a wrapper script (with :ref:`set -x <set_x>`).
+
+::
+
+ #!/bin/sh
+
+ set -e
+ set -x
+ ifconfig|grep "inet addr"|grep -v "127.0.0.1"|cut -d: -f2|cut -d' ' -f1
+
+Un-nested sub-shells do work::
+
+ - lava-test-case multinode-send-network --shell lava-send network hostname=$(hostname) fqdn=$(hostname -f)
+
+.. _check_messageid:
+
+Check that your message ID labels are consistent
+================================================
+
+A :ref:`lava_wait` must be preceded by a :ref:`lava_send` from at least
+one other device in the group or the waiting device will :ref:`timeout <timeouts>`
+
+This can be a particular problem if you remove test definitions from the
+JSON or edit a YAML file without checking other uses of the same file.
+
+``#`` can be used as a comment in YAML but JSON does not support
+comments, so take care.
+
+.. _parsers:
+
+Test your result parsers
+========================
+
+If the YAML uses a custom result parser, configure one of your YAML files
+to output the entire test result output to stdout so that you can
+reliably capture a representative block of output. Test your proposed
+result parser against the block using your favourite language.
+
+Comment out the parser from the YAML if there are particular problems,
+just to see what the default LAVA parsers can provide.
+
+.. _paths:
+
+Be obsessive about paths and scripts
+====================================
+
+* If you use ``cd`` in your YAML, always store where you were and where you end up using ``pwd``. 
+* Output your location prior to calling local wrapper scripts.
+* Ensure that all wrapper scripts are executable in your VCS
+* Ensure that the relevant interpreter is installed. e.g. python is not necessarily part of the test image.
+* Consider installing ``realpath`` and use that to debug your directory structure.
+  * Avoid the temptation of using absolute paths - LAVA may need to change the absolute locations.
+
+.. _failed_tests:
+
+A failed test is not necessarily a bug in the test
+==================================================
+
+Always check whether the test result came back as failed due to some
+cause other than the test definition itself. Particularly with MultiNode,
+a test result can fail due to some problem on a different board within
+the group.
+
+.. _json_files:
+
+Check your JSON files
+=====================
+
+Syntax problems will be picked up by LAVA when you submit but also check
+that the URLs listed in the JSON are correct. Keep your YAML descriptions,
+names and filenames unique so that it is easier to pick up if the JSON
+simply calls the wrong YAML test definition.
+
+

=== modified file 'doc/index.rst'
--- doc/index.rst	2013-01-04 00:03:43 +0000
+++ doc/index.rst	2013-06-28 10:57:22 +0000
@@ -37,6 +37,7 @@ 
    external_measurement.rst
    arm_energy_probe.rst
    sdmux.rst
+   multinode.rst
    proxy.rst
 
 * :ref:`search`

=== added file 'doc/multinode-usecases.rst'
--- doc/multinode-usecases.rst	1970-01-01 00:00:00 +0000
+++ doc/multinode-usecases.rst	2013-08-19 10:36:07 +0000
@@ -0,0 +1,8 @@ 
+MultiNode Use Cases
+###################
+
+.. toctree::
+   :maxdepth: 3
+
+   usecaseone.rst
+   usecasetwo.rst

=== added file 'doc/multinode.rst'
--- doc/multinode.rst	1970-01-01 00:00:00 +0000
+++ doc/multinode.rst	2013-08-23 10:25:00 +0000
@@ -0,0 +1,291 @@ 
+Multi-Node LAVA
+###############
+
+LAVA multi-node support allows users to use LAVA to schedule, synchronise and
+combine the results from tests that span multiple targets. Jobs can be arranged
+as groups of devices (of any type) and devices within a group can operate
+independently or use the MultiNode API to communicate with other devices in the
+same group during tests.
+
+Within a MultiNode group, devices are assigned a role and a ``count`` of devices to
+include into that role. Each role has a ``device_type`` and any number of roles can
+have the same ``device_type``. Each role can be assigned ``tags``.
+
+Once roles are defined, actions (including test images and test definitions) can be marked
+as applying to specific roles (if no role is specified, all roles use the action).
+
+If insufficient boards exist to meet the combined requirements of all the roles specified
+in the job, the job will be rejected.
+
+If there are not enough idle boards of the relevant types to meet the combined requirements
+of all the roles specified in the job, the job waits in the Submitted queue until all
+devices can be allocated.
+
+Once each board has booted the test image, the MultiNode API will be available for use within
+the test definition in the default PATH.
+
+.. toctree::
+   :maxdepth: 3
+
+   multinodeapi.rst
+   multinode-usecases.rst
+   debugging.rst
+
+Hardware requirements and virtualisation
+****************************************
+
+Multi-Node is explicitly about synchronising test operations across multiple boards and running
+Multi-Node jobs on a particular instance will have implications for the workload of that instance.
+This can become a particular problem if the instance is running on virtualised hardware with
+shared I/O, a limited amount of RAM or a limited number of available cores.
+
+e.g. Downloading, preparing and deploying test images can result in a lot of synchronous I/O and
+if this instance is running the server and the dispatcher, this can cause the load on that machine
+to rise significantly, possibly causing the server to become unresponsive.
+
+It is strongly recommended that Multi-Node instances use a separate dispatcher running on
+non-virtualised hardware so that the (possibly virtualised) server can continue to operate.
+
+Also, consider the number of boards connected to any one dispatcher. MultiNode jobs will commonly
+compress and decompress several test image files of several hundred megabytes at precisely the same
+time. Even with a powerful multi-core machine, this has been shown to cause appreciable load. It
+is worth considering matching the number of boards to the number of cores for parallel decompression
+and matching the amount of available RAM to the number and size of test images which are likely to
+be in use.
+
+Extending existing LAVA submissions
+***********************************
+
+To extend an existing JSON file to start a MultiNode job, some changes are required to define the
+``device_group``. If all devices in the group are to use the same actions, simply create a single
+role with a count for how many devices are necessary. Usually, a MultiNode job will need to assign
+different test definitions to different boards and this is done by adding more roles, splitting the
+number of devices between the differing roles and assigning different test definitions to each role.
+
+If a MultiNode job includes devices of more than one ``device_type``, there needs to be a role for
+each different ``device_type`` so that an appropriate image can be deployed.
+
+Where all roles share the same action (e.g. ``submit_results_on_host``), omit the role parameter from
+that action.
+
+If more than one, but not all, roles share one particular action, that action will need to be repeated
+within the JSON file, once for each role using that action.
+
+.. _changes_to_json:
+
+Changes to submission JSON
+==========================
+
+1. ``device`` or ``device_type`` move into a **device_group** list
+2. Each device type has a ``count`` assigned
+  1. If a ``device`` is specified directly, count needs to be one.
+  2. If ``device_type`` is used and count is larger than one, enough
+     devices will be allocated to match the count and all such devices will
+     have the same role and use the same commands and the same actions.
+3. Add tags, if required, to each role.
+4. If specific actions should only be used for particular roles, add a
+   role field to the parameters of the action.
+5. If any action has no role specified, it will be actioned for all roles.
+
+Example JSON::
+
+ {
+    "timeout": 18000,
+    "job_name": "simple multinode job",
+    "logging_level": "INFO",
+    "device_group": [
+        {
+            "role": "omap4",
+            "count": 2,
+            "device_type": "panda",
+            "tags": [
+                "mytag1"
+            ]
+        },
+        {
+            "role": "omap3",
+            "count": 1,
+            "device_type": "beaglexm",
+            "tags": [
+                "mytag2"
+            ]
+        }
+    ],
+
+Using actions for particular roles
+==================================
+
+Example JSON::
+
+    "actions": [
+        {
+            "command": "deploy_linaro_image",
+            "parameters": {
+                "image": "file:///home/instance-manager/images/panda-raring_developer_20130529-347.img.gz",
+                "role": "omap4"
+            }
+        },
+        {
+            "command": "deploy_linaro_image",
+            "parameters": {
+                "image": "file:///home/instance-manager/images/beagle-ubuntu-desktop.img.gz",
+                "role": "omap3"
+            }
+        },
+        {
+            "command": "lava_test_shell",
+            "parameters": {
+                "testdef_repos": [
+                    {
+                        "git-repo": "git://git.linaro.org/qa/test-definitions.git",
+                        "testdef": "ubuntu/smoke-tests-basic.yaml"
+                    }
+                ],
+                "timeout": 1800
+            }
+        }
+    }
+
+..
+
+.. note:: Consider using http://jsonlint.com to check your JSON before submission.
+
+
+LAVA Multi-Node timeout behaviour
+*********************************
+
+The submitted JSON includes a timeout value - in single node LAVA, this is applied to each individual action
+executed on the device under test (not for the entire job as a whole). i.e. the default timeout can be smaller
+than any one individual timeout used in the JSON or internally within LAVA.
+
+In Multi-Node LAVA, this timeout is also applied to individual polling operations, so an individual lava-sync
+or a lava-wait will fail on any node which waits longer than the default timeout. The node will receive a failure
+response.
+
+.. _timeouts:
+
+Recommendations on timeouts
+===========================
+
+MultiNode operations have implications for the timeout values used in JSON submissions. If one of the
+synchronisation primitives times out, the sync will fail and the job itself will then time out.
+One reason for a MultiNode job to timeout is if one or more boards in the group failed to boot the
+test image correctly. In this situation, all the other boards will continue until the first
+synchronisation call is made in the test definition for that board.
+
+The time limit applied to a synchronisation primitive starts when the board makes the first request
+to the Coordinator for that sync. Slower boards may well only get to that point in the test definition
+after faster devices (especially KVM devices) have started their part of the sync and timed out
+themselves.
+
+Always review the top level timeout in the JSON submission - a value of 900 seconds (15 minutes) has
+been common during testing. Excessive timeouts would prevent other jobs from using boards where the
+waiting jobs have already failed due to a problem elsewhere in the group. If timeouts are too short,
+jobs will fail unnecessarily.
+
+Balancing timeouts
+^^^^^^^^^^^^^^^^^^
+
+Individual actions and commands can have differing timeouts, so avoid the temptation to change the
+default timeout when a particular action times out in a Multi-Node job. If a particular ``lava-test-shell``
+takes a long time, set an explicit timeout for that particular action:
+
+::
+
+ {
+    "timeout": 900,
+    "job_name": "netperf multinode tests",
+    "logging_level": "DEBUG",
+ }
+
+
+::
+
+        {
+            "command": "lava_test_shell",
+            "parameters": {
+                "testdef_repos": [
+                    {
+                        "git-repo": "git://git.linaro.org/people/guoqing.zhu/netperf-multinode.git",
+                        "testdef": "netperf-multinode-c-network.yaml"
+                    }
+                ],
+                "timeout": 2400,
+                "role": "client"
+            }
+        },
+        {
+            "command": "lava_test_shell",
+            "parameters": {
+                "testdef_repos": [
+                    {
+                        "git-repo": "git://git.linaro.org/people/guoqing.zhu/netperf-multinode.git",
+                        "testdef": "netperf-multinode-s-network.yaml"
+                    }
+                ],
+                "timeout": 1800,
+                "role": "server"
+            }
+        },
+
+
+Running a server on the device-under-test
+*****************************************
+
+If this server process runs as a daemon, the test definition will need to define something for the device
+under test to actually do or it will simply get to the end of the tests and reboot. For example, if the
+number of operations is known, would be to batch up commands to the daemon, each batch being a test case.
+If the server program can run without being daemonised, it would need to be possible to close it down
+at the end of the test (normally this is the role of the sysadmin in charge of the server box itself).
+
+Making use of third party servers
+=================================
+
+A common part of a MultiNode setup is to download components from third party servers but once the test
+starts, latency and connectivity issues could interfere with the tests.
+
+Using wrapper scripts
+=====================
+
+Wrapper scripts make it easier to test your definitions before submitting to LAVA.
+The wrapper lives in a VCS repository which is specified as one of the testdef_repos and will be
+available in the same directory structure as the original repository. A wrapper script also
+helps the tests to fail early instead of trying to do the rest of the tests.
+
+MultiNode Result Bundles
+************************
+
+Results are generated by each device in the group. At submission time, one device in the group is
+selected to run the job which gets the aggregated result bundle for the entire group.
+
+LAVA Coordinator setup
+**********************
+
+Multi-Node LAVA requires a LAVA Coordinator which manages the messaging within a group of nodes involved in
+a Multi-Node job set according to this API. The LAVA Coordinator is a singleton to which nodes need to connect
+over a TCP port (default: 3079). A single LAVA Coordinator can manage groups from multiple instances.
+If the network configuration uses a firewall, ensure that this port is open for connections from Multi-Node dispatchers.
+
+If multiple coordinators are necessary on a single machine (e.g. to test different versions of the coordinator
+during development), each coordinator needs to be configured for a different port.
+
+If the dispatcher is installed on the same machine as the coordinator, the dispatcher can use the packaged
+configuration file with the default hostname of ``localhost``.
+
+Each dispatcher then needs a copy of the LAVA Coordinator configuration file, modified to point back to the
+hostname of the coordinator:
+
+Example JSON, modified for a coordinator on a machine with a fully qualified domain name::
+
+  {
+    "port": 3079,
+    "blocksize": 4096,
+    "poll_delay": 3,
+    "coordinator_hostname": "control.lab.org"
+  }
+
+An IP address can be specified instead, if appropriate.
+
+Each dispatcher needs to use the same port number and blocksize as is configured for the Coordinator
+on the specified machine. The poll_delay is the number of seconds each node will wait before polling
+the coordinator again.

=== added file 'doc/multinodeapi.rst'
--- doc/multinodeapi.rst	1970-01-01 00:00:00 +0000
+++ doc/multinodeapi.rst	2013-08-23 10:24:36 +0000
@@ -0,0 +1,302 @@ 
+.. _multinode_api:
+
+MultiNode API
+=============
+
+The LAVA MultiNode API provides a simple way to pass messages using the serial port connection which
+is already available through LAVA. The API is not intended for transfers of large amounts of data. Test
+definitions which need to transfer files, long messages or other large amounts of data need to set up their
+own network configuration, access and download methods and do the transfer in the test definition.
+
+.. _lava_self:
+
+lava-self
+---------
+
+Prints the name of the current device.
+
+Usage: ``lava-self``
+
+.. _lava_role:
+
+lava-role
+---------
+
+Prints the role the current device is playing in a multi-node job.
+
+Usage: ``lava-role``
+
+*Example.* In a directory with several scripts, one for each role
+involved in the test::
+
+    $ ./run-$(lava-role)
+
+.. _lava-group:
+
+lava-group
+----------
+
+This command will produce in its standard output a representation of the
+device group that is participating in the multi-node test job.
+
+Usage: ``lava-group``
+
+The output format contains one line per device, and each line contains
+the hostname and the role that device is playing in the test, separated
+by a TAB character::
+
+    panda01     client
+    highbank01  loadbalancer
+    highbank02  backend
+    highbank03  backend
+
+.. _lava_send:
+
+lava-send
+---------
+
+Sends a message to the group, optionally passing associated key-value
+data pairs. Sending a message is a non-blocking operation. The message
+is guaranteed to be available to all members of the group, but some of
+them might never retrieve it.
+
+Usage: ``lava-send <message-id> [key1=val1 [key2=val2] ...]``
+
+Examples will be provided below, together with ``lava-wait`` and
+``lava-wait-all``.
+
+.. _lava_wait:
+
+lava-wait
+---------
+
+Waits until any other device in the group sends a message with the given
+ID. This call will block until such message is sent.
+
+Usage: ``lava-wait <message-id>``
+
+If there was data passed in the message, the key-value pairs will be
+printed in the cache file(/tmp/lava_multi_node_cache.txt in default),
+each in one line. If no key values were passed, nothing is printed.
+
+The message ID data is persistent for the life of the MultiNode group.
+The data can be retrieved at any later stage using ``lava-wait`` and as
+the data is already available, there will be no waiting time for repeat
+calls. If devices continue to send data with the associated message ID,
+that data will continue to be added to the data for that message ID and
+will be returned by subsequent calls to ``lava-wait`` for that message
+ID. Use a different message ID to collate different message data.
+
+.. _lava_wait_all:
+
+lava-wait-all
+-------------
+
+Waits until **all** other devices in the group send a message with the
+given message ID. IF ``<role>`` is passed, only wait until all devices
+with that given role send a message.
+
+``lava-wait-all <message-id> [<role>]``
+
+If data was sent by the other devices with the message, the key-value
+pairs will be printed in the cache file(/tmp/lava_multi_node_cache.txt
+in default),each in one line, prefixed with the target name and
+a colon.
+
+Some examples for ``lava-send``, ``lava-wait`` and
+``lava-wait-all`` are given below.
+
+Using ``lava-sync`` or ``lava-wait-all`` in a test definition effectively
+makes all boards in the group run at the speed of the slowest board in
+the group up to the point where the sync or wait is called.
+
+Ensure that the message-id matches an existing call to ``lava-send`` for
+each relevant test definition **before** that test definition calls
+``lava-wait-all`` or any device using that test definition will wait forever
+(and eventually timeout, failing the job).
+
+The message returned can include data from other devices which sent a
+message with the relevant message ID, only the wait is dependent on
+particular devices with a specified role.
+
+As with ``lava-wait``, the message ID is persistent for the duration of
+the MultiNode group.
+
+.. _lava_sync:
+
+lava-sync
+---------
+
+Global synchronization primitive. Sends a message, and waits for the
+same message from all of the other devices.
+
+Usage: ``lava-sync <message>``
+
+``lava-sync foo`` is effectively the same as ``lava-send foo`` followed
+by ``lava-wait-all foo``.
+
+.. _lava_network:
+
+lava-network
+------------
+
+Helper script to broadcast IP data from the test image, wait for data to be
+received by the rest of the group (or one role within the group) and then provide
+an interface to retrieve IP data about the group on the command line.
+
+Raising a suitable network interface is a job left for the designer of the test
+definition / image but once a network interface is available, ``lava-network``
+can be asked to broadcast this information to the rest of the group. At a later
+stage of the test, before the IP details of the group need to be used, call
+``lava-network collect`` to receive the same information about the rest of
+the group.
+
+All usage of lava-network needs to use a broadcast (which wraps a call to
+``lava-send``) and a collect (which wraps a call to ``lava-wait-all``). As a
+wrapper around ``lava-wait-all``, collect will block until the rest of the group
+(or devices in the group with the specified role) has made a broadcast.
+
+After the data has been collected, it can be queried for any board specified in
+the output of ``lava-group`` by specifying the parameter to query (as used in the
+broadcast)::
+
+ lava-network query panda19 ipv4
+ 192.168.3.56
+
+ lava-network query beaglexm04 ipv6
+ fe80::f2de:f1ff:fe46:8c21
+
+ lava-network query arndale02 hostname
+ server
+
+ lava-network query panda14 hostname-full
+ client.localdomain
+
+ lava-network query panda19 netmask
+ 255.255.255.0
+
+ lava-network query panda14 default-gateway
+ 192.168.1.1
+
+ lava-network query panda17 dns_2
+ 8.8.8.8
+
+``lava-network hosts`` can be used to output the list of all boards in the group
+which have returned a fully qualified domain name in a format suitable for
+``/etc/hosts``, appending to the specified file.
+
+Usage:
+
+ broadcast: ``lava-network broadcast [interface]``
+
+ collect:   ``lava-network collect [interface] <role>``
+
+ query:     ``lava-network query [hostname] [option]``
+
+ hosts:     ``lava-network hosts [file]``
+
+Example 1: simple client-server multi-node test
+-----------------------------------------------
+
+Two devices, with roles ``client``, ``server``
+
+LAVA Test Shell test definition (say, ``example1.yaml``)::
+
+    run:
+        steps:
+            - ./run-`lava-role`.sh
+
+The test image or the test definition would then provide two scripts,
+with only one being run on each device, according to the role specified.
+
+``run-server.sh``::
+
+    #!/bin/sh
+
+    iperf -s &
+    lava-send server-ready username=testuser
+    lava-wait client-done
+
+Notes:
+
+* To make use of the server-ready message, some kind of client
+  needs to do a ``lava-wait server-ready``
+* There needs to be a support on a client to do the
+  ``lava-send client-done`` or the wait will fail on the server.
+* If there was more than one client, the server could call
+  ``lava-wait-all client-done`` instead.
+
+
+``run-client.sh``::
+
+    #!/bin/sh
+
+    lava-wait server-ready
+    server=$(cat /tmp/lava_multi_node_cache.txt | cut -d = -f 2)
+    iperf -c $server
+    # ... do something with output ...
+    lava-send client-done
+
+Notes:
+
+* The client waits for the server-ready message as it's first task,
+  then does some work, then sends a message so that the server can
+  move on and do other tests.
+
+Example 2: variable number of clients
+-------------------------------------
+
+``run-server.sh``::
+
+    #!/bin/sh
+
+    start-server
+    lava-sync ready
+    lava-sync done
+
+``run-client.sh``::
+
+    #!/bin/sh
+
+    # refer to the server by name, assume internal DNS works
+    server=$(lava-group | grep 'server$' | cut -f 1)
+
+    lava-sync ready
+    run-client
+    lava-sync done
+
+Example 3: peer-to-peer application
+-----------------------------------
+
+Single role: ``peer``, any number of devices
+
+``run-peer.sh``::
+
+    #!bin/sh
+
+    initialize-data
+    start-p2p-service
+    lava-sync running
+
+    push-data
+    for peer in $(lava-group | cut -f 1); then
+        if [ $peer != $(lava-self) ]; then
+            query-data $peer
+        fi
+    fi
+
+
+Example 4: using lava-network
+-----------------------------
+
+If the available roles include ''server'' and there is a board named
+''database''::
+
+   #!/bin/sh
+   ifconfig eth0 up
+   # possibly do your own check that this worked
+   lava-network broadcast eth0
+   # do whatever other tasks may be suitable here, then wait...
+   lava-network collect eth0 server
+   # continue with tests and get the information.
+   lava-network query database ipv4

=== added file 'doc/usecaseone.rst'
--- doc/usecaseone.rst	1970-01-01 00:00:00 +0000
+++ doc/usecaseone.rst	2013-08-23 10:25:19 +0000
@@ -0,0 +1,521 @@ 
+.. _use_case_one:
+
+Use Case One - Setting up a simple client:server test definition.
+*****************************************************************
+
+One device needs to obtain / prepare some data and then make the data
+available to another device in the same group.
+
+Source Code
+===========
+
+* The YAML snippets in this example are not complete, for a working example of the code, see:
+
+  https://git.linaro.org/gitweb?p=people/neilwilliams/multinode-yaml.git;a=blob_plain;f=forwarder.yaml;hb=refs/heads/master
+
+  https://git.linaro.org/gitweb?p=people/neilwilliams/multinode-yaml.git;a=blob_plain;f=receiver.yaml;hb=refs/heads/master
+
+  https://git.linaro.org/gitweb?p=people/neilwilliams/multinode-yaml.git;a=blob_plain;f=json/beagleblack-use-case.json;hb=HEAD
+
+Requirements
+============
+
+1. A mechanism to obtain the data, presumably from some third-party source
+2. A sync to ensure that the file is ready to be offered to the other device
+
+ 2.1. This ensures that the attempt to receive does not start early
+
+3. A message to the original board that the data has been received and verified
+
+ 3.1. This ensures that any cleanup of the data does not happen before the transfer is complete.
+
+Methods
+=======
+
+* Install a package which can obtain the data from the third party source
+* Install a package which can provide the means to get the data to the other board
+
+Control flow
+============
+
++------------------------------+----------------------------------------+
+|sender starts                 | receiver starts                        |
++------------------------------+----------------------------------------+
+|sender obtains the data       | receiver waits for sender to be ready  |
++------------------------------+----------------------------------------+
+|sender modifies the data      | wait                                   |
++------------------------------+----------------------------------------+
+|sender notifies receiver      | wait                                   |
++------------------------------+----------------------------------------+
+|sender waits for completion   | receiver initiates transfer            |
++------------------------------+----------------------------------------+
+|wait                          | receiver notifies sender of completion |
++------------------------------+----------------------------------------+
+|sender cleans up              | receiver processes the modified data   |
++------------------------------+----------------------------------------+
+
+It is clear from the flow that the sender and the receiver are doing
+different things at different times and may well need different packages
+installed. The simplest way to manage this is to have two YAML files.
+
+In this example, sender is going to use wget to obtain the data and
+apache to offer it to the receiver. The receiver will only need wget.
+The example won't actually modify the data, but for the purposes of the
+example, the documentation will ignore the fact that the receiver could
+just get the data directly.
+
+Preparing the YAML
+==================
+
+The name field specified in the YAML will be used later as the basis
+of the filter. To start each YAML file, ensure that the metadata contains
+two metadata fields:
+
+* format : **Lava-Test Test Definition 1.0**
+* description : your own descriptive text
+
+It is useful to also add the maintainer field with your email address
+as this will be needed later if the test is to be added to one of the
+formal test sets.
+
+::
+
+ metadata:
+    format: Lava-Test Test Definition 1.0
+    name: multinode-usecaseone
+    description: "MultiNode network test commands"
+    maintainer:
+        - neil.williams@linaro.org
+
+Installing packages for use in a test
+-------------------------------------
+
+If your test image raises a usable network interface by default on boot,
+the YAML can specify a list of packages which need to be installed for
+this test definition:
+
+::
+
+ install:
+    deps:
+        - wget
+        - apache2
+
+If your test needs to raise the network interface itself, the package
+installation will need to be done in the run steps::
+
+ run:
+    steps:
+        - lava-test-case linux-linaro-ubuntu-route-ifconfig-up --shell ifconfig eth0 up
+        - lava-test-case apt-update --shell apt-get update
+        - lava-test-case install-deps --shell apt-get -y install wget apache2
+
+Note that although KVM devices can use apt, the network interface fails
+the LAVA test, so use the manual install steps for non-bridged KVM devices.
+
+Preparing the test to send data
+-------------------------------
+
+``modify-data.sh`` would, presumably, unpack the data, modify it in
+some way and pack it back up again. In this example, it would be a no-op
+but note that it still needs to exist in the top level directory of your
+VCS repo and be executable.
+
+Any packages required by ``modify-data.sh`` need to be added to the install
+deps of sender.yaml. Providing useful contents of ``modify-data.sh`` is
+left as an exercise for the reader.
+
+Modification happens before the :ref:`lava_sync` ``download`` which tells the
+receiver that the data is ready to be transferred.
+
+The sender then waits for the receiver to acknowledge a correct download
+using :ref:`lava_sync` ``received`` and cleans up.
+
+sender.yaml
+^^^^^^^^^^^
+
+::
+
+ install:
+    deps:
+        - wget
+        - apache2
+
+ run:
+   steps:
+        - lava-test-case multinode-network --shell lava-network broadcast eth0
+        - lava-test-case wget-file --shell wget -O /var/www/testfile http://releases.linaro.org/latest/android/arndale/userdata.tar.bz2
+        - ./modify-data.sh
+        - lava-test-case file-sync --shell lava-sync download
+        - lava-test-case done-sync --shell lava-sync received
+        - lava-test-case remove-tgz --shell rm /var/www/testfile
+
+Handling the transfer to the receiver
+-------------------------------------
+
+The receiver needs to know where to find the data. The sender can ensure that the
+file is in a particular location, it is up to the YAML to get the rest of the
+information of the network address of the sender. This example assumes that the
+data is modified in some undisclosed manner by the ``./modify-data.sh``
+script which is part of your testdef_repo before the receiver is notified.
+
+The LAVA :ref:`multinode_api` provides ways of querying the network information of devices
+within the group. In order to offer the data via apache, the sender needs to
+raise a suitable network interface, so it calls ifconfig as a lava test case
+first and then uses the lava-network API call to broadcast network information
+about itself.
+
+Equally, the receiver needs to raise a network interface, broadcast
+it's network information and then collect the network information for
+the group.
+
+Note that collect is a blocking call - each of the devices needs to
+broadcast before collect will return. (There is support for collecting
+data only for specific roles but that's outside the scope of this example.)
+
+receiver.yaml
+^^^^^^^^^^^^^
+
+::
+
+ install:
+    deps:
+        - wget
+
+ run:
+   steps:
+        - lava-test-case linux-linaro-ubuntu-route-ifconfig-up --shell ifconfig eth0 up
+        - lava-test-case multinode-network --shell lava-network broadcast eth0
+        - lava-test-case multinode-get-network --shell lava-network collect eth0
+        - lava-test-case file-sync --shell lava-sync download
+        - lava-test-case wget-from-group --shell ./get-data.sh
+        - lava-test-case get-sync --shell lava-sync received
+        - lava-test-case list-file --shell ls -l /tmp/testfile
+        - lava-test-case remove-file --shell rm /tmp/testfile
+
+
+The receiver then needs to obtain that network information and process
+it to get the full URL of the data. To do command line processing and
+pipes, a helper script is needed:
+
+get-data.sh
+^^^^^^^^^^^
+
+Always use **set -x** in any wrapper / helper scripts which you expect
+to use in a test run to be able to debug test failures.
+
+Ensure that the scripts are marked as executable in your VCS and
+that the appropriate interpreter is installed in your test image.
+
+::
+
+ #!/bin/sh
+ set -e
+ set -x
+ DEVICE=`lava-group | grep -m1 receiver|cut -f2`
+ SOURCE=`lava-network query $DEVICE ipv4|grep -v LAVA|cut -d: -f2`
+ wget -O /tmp/testfile http://${SOURCE}/testfile
+
+
+The ``$DEVICE`` simply matches the first device name in this group
+which contains the string 'receiver' (which comes from the ``role``
+specified in the JSON) and returns the full name of that device,
+e.g. multinode-kvm02 or staging-beagleblack03
+
+This device name is then passed to lava-network query to get the ipv4
+details of that device within this group. The value of ``$SOURCE``
+is an IPv4 address of the sender (assuming that your JSON has defined a
+role for the sender which would contain the 'receiver' string in the name.)
+
+Finally, ``get-data.sh`` does the work of receiving the data from
+the sender. The verification of the data is left as an exercise for
+the reader - one simple method would be for the sender to checksum the
+(modified) data and use ``lava-send`` to make that checksum available
+to devices within the group. The receiver can then use ``lava-wait``
+to get that checksum.
+
+Once ``get-data.sh`` returns, the receiver notifies the sender that
+the transfer is complete, processes the data as it sees fit and cleans up.
+
+Preparing the JSON
+===================
+
+The JSON ties the YAML test definition with the hardware and software to
+run the test definition. The JSON is also where multiple test
+definitions are combined into a single MultiNode test.
+
+General settings
+----------------
+
+.. warning:: **Timeout values need to be reduced from single node examples**
+
+ - each synchronisation primitive uses the timeout from the general settings,
+ - always check your timeout value - 900 is recommended.
+
+::
+
+ {
+    "health_check": false,
+    "logging_level": "DEBUG",
+    "timeout": 900,
+    "job_name": "client-server test",
+ }
+
+
+device_group
+^^^^^^^^^^^^
+
+The device_group collates the device-types and the role of each device
+type in the group along with the number of boards to allocate to each
+role.
+
+If count is larger than one, enough devices will be allocated to match
+the count and all such devices will have the same role and use the same
+commands and the same actions. (The job will be rejected if there are
+not enough devices available to satisfy the count.)
+
+::
+
+ {
+    "device_group": [
+        {
+            "role": "sender",
+            "count": 1,
+            "device_type": "beaglebone-black",
+            "tags": [
+                "use-case-one"
+            ]
+        },
+        {
+            "role": "receiver",
+            "count": 1,
+            "device_type": "kvm",
+            "tags": [
+                "use-case-one"
+            ]
+        }
+    ],
+ }
+
+
+actions
+-------
+
+When mixing different device_types in one group, the images to deploy
+will probably vary, so use the role parameter to determine which image
+gets used on which board(s).
+
+deploy_linaro_image
+^^^^^^^^^^^^^^^^^^^
+
+::
+
+ {
+    "actions": [
+        {
+            "command": "deploy_linaro_image",
+            "parameters": {
+                "image": "http://images.validation.linaro.org/kvm-debian-wheezy.img.gz",
+                "role": "receiver"
+            }
+        },
+        {
+            "command": "deploy_linaro_image",
+            "parameters": {
+                "image": "http://linaro-gateway/beaglebone/beaglebone_20130625-379.img.gz",
+                "role": "sender"
+            }
+        }
+ }
+
+
+lava_test_shell
+^^^^^^^^^^^^^^^
+
+If specific actions should only be used for particular roles, add a role
+field to the parameters of the action.
+
+If any action has no role specified, it will be actioned for all roles.
+
+For Use Case One, we have a different YAML file for each role, so
+we have two lava_test_shell commands.
+
+::
+
+ {
+        {
+            "command": "lava_test_shell",
+            "parameters": {
+                "testdef_repos": [
+                    {
+                        "git-repo": "git://git.linaro.org/people/neilwilliams/multinode-yaml.git",
+                        "testdef": "forwarder.yaml"
+                    }
+                ],
+                "role": "sender"
+            }
+        },
+        {
+            "command": "lava_test_shell",
+            "parameters": {
+                "testdef_repos": [
+                    {
+                        "git-repo": "git://git.linaro.org/people/neilwilliams/multinode-yaml.git",
+                        "testdef": "receiver.yaml"
+                    }
+                ],
+                "role": "receiver"
+            }
+        }
+ }
+
+
+submit_results
+^^^^^^^^^^^^^^
+
+The results for the entire group get aggregated into a single result
+bundle. Ensure that the bundle stream exists on the specified server
+and that you have permission to add to that stream.
+
+::
+
+ {
+        {
+            "command": "submit_results_on_host",
+            "parameters": {
+                "stream": "/anonymous/use-cases/",
+                "server": "http://validation.linaro.org/RPC2/"
+            }
+        }
+ }
+
+Prepare a filter for the results
+================================
+
+Now decide how you are going to analyse the results of tests using
+this definition, using the name of the test definition specified in
+the YAML metadata.
+
+Unique names versus shared names
+--------------------------------
+
+Each YAML file can have a different name or the name can be shared amongst
+many YAML files at which point those files form one test definition, irrespective
+of what each YAML file actually does. Sharing the name means that the results
+of the test definition always show up under the same test name. Whilst this
+can be useful, be aware that if you subsequently re-use one of the YAML files
+sharing a name in a test which does not use the other YAML files sharing
+the same name, there will be gaps in your data. When the filter is later
+used to prepare a graph, these gaps can make it look as if the test
+failed for a period of time when it was simply that the not all of the
+tests in the shared test definition were run.
+
+A single filter can combine the results of multiple tests, so it is
+generally more flexible to have a unique name in each YAML file and
+combine the tests in the filters.
+
+If you use a unique test definition name for every YAML file, ensure that
+each name is descriptive and relevant so that you can pick the right test
+definition from the list of all tests when preparing the filter. If you
+share test definition names, you will have a shorter list to search.
+
+Filters also allow results to be split by the device type and, in
+Multi-Node, by the role. Each of these parameters is defined by the JSON,
+not the YAML, so care is required when designing your filters to cover
+all uses of the test definition without hiding the data in a set of
+unrelated results.
+
+Create a filter
+---------------
+
+To create or modify filters (and the graphs which can be based on them)
+you will need appropriate permissions on the LAVA instance to which are
+you submitting your JSON.
+
+On the website for the instance running the tests, click on Dashboard
+and Filters. If you have permissions, there will be a link entitled
+*Add new filter...*.
+
+The filter name should include most of the data about what this filter
+is intended to do, without whitespace. This name will be preserved through
+to the name of the graph based on this filter and can be changed later if
+necessary. Choose whether to make the filter public and select the bundle
+stream(s) to add into the filter.
+
+If the filter is to aggregate all results for a test across all
+devices and all roles, simply leave the *Attributes* empty. Otherwise,
+*Add a required attribute* and start typing to see the available fields.
+
+To filter by a particular device_type, choose **target.device_type**.
+
+To filter by a particular role (Multi-Node only), choose **role**.
+
+Click *Add a test* to get the list of test definition names for which
+results are available.
+
+Within a test definition, a filter can also select only particular test
+cases. In this Use Case, for example, the filter could choose only the
+``multinode-network``, ``multinode-get-network`` or ``file-sync``
+test cases. Continue to add tests and/or test cases - the more tests
+and/or test cases are added to the filter, the fewer results will
+match.
+
+Click the *Preview* button to apply the filter to the current set of
+results **without saving the filter**.
+
+In the preview, if there are columns with no data or rows with no data
+for specific columns, these will show up as missing data in the filter
+and in graphs based on this filter. This is an indication that you need
+to refine either the filter or the test definitions to get a cohesive
+set of results.
+
+If you are happy with the filter, click on save.
+
+The suggested filter for this use case would simply have a suitable name,
+no required attributes and a single test defined - using a shared name
+specified in each of the YAML files.
+
+::
+
+ Bundle streams     /anonymous/instance-manager/
+ Test cases         multinode-network 	any
+
+Prepare a graph based on the filter
+===================================
+
+A graph needs an image and the image needs to be part of an image set to
+be visible in the dashboard image reports. Currently, these steps need
+to be done by an admin for the instance concerned.
+
+Once the image exists and it has been added to an image set, changes in
+the filter will be reflected in the graph without the need for
+administrator changes.
+
+Each graph is the result of a single image which itself is basde on a
+single filter. Multiple images are collated into image sets.
+
+Summary
+=======
+
+The full version of this use case are available:
+
+http://git.linaro.org/gitweb?p=people/neilwilliams/multinode-yaml.git;a=blob_plain;f=json/kvm-beagleblack-group.json;hb=HEAD
+
+Example test results are visible here:
+
+http://multinode.validation.linaro.org/dashboard/image-reports/kvm-multinode
+
+http://multinode.validation.linaro.org/dashboard/streams/anonymous/instance-manager/bundles/da117e83d7b137930f98d44b8989dbe0f0c827a4/
+
+This example uses a kvm device as the receiver only because the test environment
+did not have a bridged configuration, so the internal networking of the kvm meant
+that although the KVM could connect to the beaglebone-black, the beaglebone-black
+could not connect to the kvm.
+
+https://git.linaro.org/gitweb?p=people/neilwilliams/multinode-yaml.git;a=blob_plain;f=json/beagleblack-use-case.json;hb=HEAD
+
+https://staging.validation.linaro.org/dashboard/image-reports/beagleblack-usecase
+
+https://staging.validation.linaro.org/dashboard/streams/anonymous/codehelp/bundles/cf4eb9e0022232e97aaec2737b3cd436cd37ab14/
+
+This example uses two beaglebone-black devices.

=== added file 'doc/usecasetwo.rst'
--- doc/usecasetwo.rst	1970-01-01 00:00:00 +0000
+++ doc/usecasetwo.rst	2013-08-23 10:25:41 +0000
@@ -0,0 +1,224 @@ 
+.. _use_case_two:
+
+Use Case Two - Setting up the same job on multiple devices
+**********************************************************
+
+One test definition (or one set of test definitions) to be run on
+multiple devices of the same device type.
+
+Source Code
+===========
+
+The test definition itself could be an unchanged singlenode test definition, e.g.
+
+ https://git.linaro.org/gitweb?p=qa/test-definitions.git;a=blob_plain;f=ubuntu/smoke-tests-basic.yaml;hb=refs/heads/master
+
+Alternatively, it could use the MultiNode API to synchronise the devices, e.g.
+
+  https://git.linaro.org/gitweb?p=people/neilwilliams/multinode-yaml.git;a=blob_plain;f=multinode01.yaml;hb=refs/heads/master
+
+  https://git.linaro.org/gitweb?p=people/neilwilliams/multinode-yaml.git;a=blob_plain;f=multinode02.yaml;hb=refs/heads/master
+
+  https://git.linaro.org/gitweb?p=people/neilwilliams/multinode-yaml.git;a=blob_plain;f=multinode03.yaml;hb=refs/heads/master
+
+Requirements
+============
+
+ * Multiple devices running the same test definition.
+ * Running multiple test definitions at the same time on all devices in the group.
+ * Synchronising multiple devices during a test.
+ * Filter the results by device name.
+
+Preparing the YAML
+==================
+
+In the first part of this use case, the same YAML file is to be used to
+test multiple devices. Select your YAML file and, if appropriate, edit
+the name in the metadata.
+
+Preparing the JSON
+===================
+
+The change from a standard single-node JSON file is to expand the device_type
+or device field to a device_group.
+
+The change for multiple devices in MultiNode is within the ``device_group``. To run the test
+multiple devices of the same type, simply increase the ``count``:
+
+::
+
+ {
+    "device_group": [
+        {
+            "role": "bear",
+            "count": 2,
+            "device_type": "panda",
+            "tags": [
+                "use-case-two"
+            ]
+        }
+ }
+
+If the rest of the JSON refers to a ``role`` other than the one specified
+in the ``device_group``, those JSON sections are ignored.
+
+If other actions in the JSON do not mention a ``role``, the action will
+occur on all devices in the ``device_group``. So with a single role,
+it only matters that a role exists in the ``device_group``.
+
+actions
+-------
+
+::
+
+ {
+        {
+            "command": "deploy_linaro_image",
+            "parameters": {
+                "image": "https://releases.linaro.org/13.03/ubuntu/panda/panda-quantal_developer_20130328-278.img.gz"
+            }
+           "role": "bear"
+        }
+ }
+
+lava_test_shell
+^^^^^^^^^^^^^^^
+
+To run multiple test definitions from one or multiple testdef repositories,
+expand the testdef_repos array:
+
+.. tip:: Remember the JSON syntax.
+
+ - continuations need commas, completions do not.
+
+::
+
+ {
+        {
+            "command": "lava_test_shell",
+            "parameters": {
+                "testdef_repos": [
+                    {
+                        "git-repo": "git://git.linaro.org/people/neilwilliams/multinode-yaml.git",
+                        "testdef": "multinode01.yaml"
+                    },
+                    {
+                        "git-repo": "git://git.linaro.org/people/neilwilliams/multinode-yaml.git",
+                        "testdef": "multinode02.yaml"
+                    },
+                    {
+                        "git-repo": "git://git.linaro.org/people/neilwilliams/multinode-yaml.git",
+                        "testdef": "multinode03.yaml"
+                    }
+                ],
+                "role": "sender"
+            }
+        },
+ }
+
+submit_results
+^^^^^^^^^^^^^^
+
+The results for the entire group get aggregated into a single result
+bundle.
+
+::
+
+ {
+        {
+            "command": "submit_results_on_host",
+            "parameters": {
+                "stream": "/anonymous/instance-manager/",
+                "server": "http://validation.linaro.org/RPC2/"
+            }
+        }
+ }
+
+Prepare a filter for the results
+================================
+
+The filter for this use case uses a ``required attribute``
+of **target.device_type** to only show results for the specified
+devices (to cover reuse of the YAML on other boards later).
+
+It is also possible to add a second filter which matches a specific **target**
+device.
+
+Adding synchronisation
+======================
+
+So far, the multiple devices have been started together but then had no
+further interaction.
+
+The :ref:`multinode_api` supports communication between devices within
+a group and provides synchronisation primitives. The simplest of these
+primitives, :ref:`lava_sync` was used in :ref:`use_case_one` but there are more
+possibilities available.
+
+:ref:`lava_sync` is a special case of a :ref:`lava_send` followed by a
+:ref:`lava_wait_all`.
+
+Sending messages
+----------------
+
+Messages can be sent using :ref:`lava_send` which is a non-blocking call.
+At a later point, another device in the group can collect the message
+using ``lava-wait`` or ``lava-wait-all`` which will block until
+the message is available.
+
+The message can be a simple identifier (e.g. 'download' or 'ready') and
+is visible to all devices in the group.
+
+Key value pairs can also be sent using the API to broadcast particular
+information.
+
+If multiple devices send the same message ID, the data is collated by
+the LAVA Coordinator. Key value pairs sent with any message ID are
+tagged with the device name which sent the key value pairs.
+
+Receiving messages
+------------------
+
+Message reception will block until the message is available.
+
+For :ref:`lava_wait`, the message is deemed available as soon as any device
+in the group has sent a message with the matching ID. If no devices have
+sent such a message, any device asking for ``lava-wait`` on that ID
+will block until a different board uses ``lava-send`` with the expected
+message ID.
+
+For :ref:`lava_wait_all`, the message is only deemed available if **all
+devices in the group** have already sent a message with the expected message
+ID. Therefore, using ``lava-wait-all`` requires a preceding
+``lava-send``.
+
+When using ``lava-wait-all MESSAGEID ROLE``, the message is only deemed
+available if **all devices with the matching role in the group** have
+sent a message with the expected message ID. If the receiving device has
+the specified role, that device must use a ``lava-send`` for the same
+message ID before using ``lava-wait-all MESSAGEID ROLE``.
+
+::
+
+        - lava-test-case multinode-send-network --shell lava-send ready
+        - lava-test-case multinode-get-network --shell lava-wait ready
+
+It is up to the test writer to ensure that when :ref:`lava_wait` is used,
+that the message ID is sufficiently unique that the first use of that
+message ID denotes the correct point in the YAML.
+
+::
+
+        - lava-test-case multinode-send-message --shell lava-send sending source=$(lava-self) role=$(lava-role) hostname=$(hostname -f) kernver=$(uname -r) kernhost=$(uname -n)
+        - lava-test-case multinode-wait-message --shell lava-wait-all sending
+
+This example will wait until all devices in the group have sent the
+message ID ''sending'' (with or without the associated key value pairs).
+
+Summary
+=======
+
+http://git.linaro.org/gitweb?p=people/neilwilliams/multinode-yaml.git;a=blob_plain;f=json/panda-only-group.json;hb=refs/heads/master
+
+http://multinode.validation.linaro.org/dashboard/image-reports/panda-multinode
+

=== modified file 'lava/dispatcher/commands.py'
--- lava/dispatcher/commands.py	2013-08-22 16:01:35 +0000
+++ lava/dispatcher/commands.py	2013-08-28 14:55:50 +0000
@@ -7,7 +7,7 @@ 
 from json_schema_validator.errors import ValidationError
 from lava.tool.command import Command
 from lava.tool.errors import CommandError
-
+from lava.dispatcher.node import NodeDispatcher
 import lava_dispatcher.config
 from lava_dispatcher.config import get_config, get_device_config, get_devices
 from lava_dispatcher.job import LavaTestJob, validate_job_data
@@ -112,6 +112,13 @@ 
             jobdata = stream.read()
             json_jobdata = json.loads(jobdata)
 
+        # detect multinode and start a NodeDispatcher to work with the LAVA Coordinator.
+        if not self.args.validate:
+            if 'target_group' in json_jobdata:
+                node = NodeDispatcher(json_jobdata, oob_file, self.args.output_dir)
+                node.run()
+                # the NodeDispatcher has started and closed.
+                exit(0)
         if self.args.target is None:
             if 'target' not in json_jobdata:
                 logging.error("The job file does not specify a target device. "

=== added file 'lava/dispatcher/node.py'
--- lava/dispatcher/node.py	1970-01-01 00:00:00 +0000
+++ lava/dispatcher/node.py	2013-08-23 14:38:22 +0000
@@ -0,0 +1,411 @@ 
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+#
+#  node.py
+#
+#  Copyright 2013 Linaro Limited
+#  Author Neil Williams <neil.williams@linaro.org>
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
+#  MA 02110-1301, USA.
+#
+#
+
+import socket
+from socket import gethostname
+import json
+import logging
+import os
+import copy
+import sys
+import time
+from lava_dispatcher.config import get_config
+from lava_dispatcher.job import LavaTestJob
+
+
+class Poller(object):
+    """
+    Blocking, synchronous socket poller which repeatedly tries to connect
+    to the Coordinator, get a very fast response and then implement the
+    wait.
+    If the node needs to wait, it will get a {"response": "wait"}
+    If the node should stop polling and send data back to the board, it will
+    get a {"response": "ack", "message": "blah blah"}
+    """
+
+    json_data = None
+    blocks = 4 * 1024
+    # how long between polls (in seconds)
+    poll_delay = 1
+    timeout = 0
+
+    def __init__(self, data_str):
+        try:
+            self.json_data = json.loads(data_str)
+        except ValueError:
+            logging.error("bad JSON")
+            exit(1)
+        if 'port' not in self.json_data:
+            logging.error("Misconfigured NodeDispatcher - port not specified")
+        if 'blocksize' not in self.json_data:
+            logging.error("Misconfigured NodeDispatcher - blocksize not specified")
+        self.blocks = int(self.json_data['blocksize'])
+        if "poll_delay" in self.json_data:
+            self.poll_delay = int(self.json_data["poll_delay"])
+        if 'timeout' in self.json_data:
+            self.timeout = self.json_data['timeout']
+
+    def poll(self, msg_str):
+        """
+        Blocking, synchronous polling of the Coordinator on the configured port.
+        Single send operations greater than 0xFFFF are rejected to prevent truncation.
+        :param msg_str: The message to send to the Coordinator, as a JSON string.
+        :return: a JSON string of the response to the poll
+        """
+        # starting value for the delay between polls
+        delay = 1
+        msg_len = len(msg_str)
+        if msg_len > 0xFFFE:
+            logging.error("Message was too long to send!")
+            return
+        c = 0
+        response = None
+        while True:
+            c += self.poll_delay
+            s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+            s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+            try:
+                s.connect((self.json_data['host'], self.json_data['port']))
+                logging.debug("Connecting to LAVA Coordinator on %s:%s" % (self.json_data['host'], self.json_data['port']))
+                delay = self.poll_delay
+            except socket.error as e:
+                logging.warn("socket error on connect: %d %s %s" %
+                             (e.errno, self.json_data['host'], self.json_data['port']))
+                time.sleep(delay)
+                delay += 2
+                s.close()
+                continue
+            logging.debug("sending message: %s" % msg_str[:42])
+            # blocking synchronous call
+            try:
+                # send the length as 32bit hexadecimal
+                ret_bytes = s.send("%08X" % msg_len)
+                if ret_bytes == 0:
+                    logging.debug("zero bytes sent for length - connection closed?")
+                    continue
+                ret_bytes = s.send(msg_str)
+                if ret_bytes == 0:
+                    logging.debug("zero bytes sent for message - connection closed?")
+                    continue
+            except socket.error as e:
+                logging.warn("socket error '%d' on send" % e.message)
+                s.close()
+                continue
+            s.shutdown(socket.SHUT_WR)
+            try:
+                header = s.recv(8)  # 32bit limit as a hexadecimal
+                if not header or header == '':
+                    logging.debug("empty header received?")
+                    continue
+                msg_count = int(header, 16)
+                recv_count = 0
+                response = ''
+                while recv_count < msg_count:
+                    response += s.recv(self.blocks)
+                    recv_count += self.blocks
+            except socket.error as e:
+                logging.warn("socket error '%d' on response" % e.errno)
+                s.close()
+                continue
+            s.close()
+            if not response:
+                time.sleep(delay)
+                # if no response, wait and try again
+                logging.debug("failed to get a response, setting a wait")
+                response = json.dumps({"response": "wait"})
+            try:
+                json_data = json.loads(response)
+            except ValueError:
+                logging.error("response starting '%s' was not JSON" % response[:42])
+                break
+            if json_data['response'] != 'wait':
+                break
+            else:
+                if not (c % int(10 * self.poll_delay)):
+                    logging.info("Waiting ... %d of %d secs" % (c, self.timeout))
+                time.sleep(delay)
+            # apply the default timeout to each poll operation.
+            if c > self.timeout:
+                response = json.dumps({"response": "nack"})
+                break
+        return response
+
+
+def readSettings(filename):
+    """
+    NodeDispatchers need to use the same port and blocksize as the Coordinator,
+    so read the same conffile.
+    The protocol header is hard-coded into the server & here.
+    """
+    settings = {
+        "port": 3079,
+        "blocksize": 4 * 1024,
+        "poll_delay": 1,
+        "coordinator_hostname": "localhost"
+    }
+    with open(filename) as stream:
+        jobdata = stream.read()
+        json_default = json.loads(jobdata)
+    if "port" in json_default:
+        settings['port'] = json_default['port']
+    if "blocksize" in json_default:
+        settings['blocksize'] = json_default["blocksize"]
+    if "poll_delay" in json_default:
+        settings['poll_delay'] = json_default['poll_delay']
+    if "coordinator_hostname" in json_default:
+        settings['coordinator_hostname'] = json_default['coordinator_hostname']
+    return settings
+
+
+class NodeDispatcher(object):
+
+    group_name = ''
+    client_name = ''
+    group_size = 0
+    target = ''
+    role = ''
+    poller = None
+    oob_file = sys.stderr
+    output_dir = None
+    base_msg = None
+    json_data = None
+
+    def __init__(self, json_data, oob_file=sys.stderr, output_dir=None):
+        """
+        Parse the modified JSON to identify the group name,
+        requested port for the group - node comms
+        and get the designation for this node in the group.
+        """
+        settings = readSettings("/etc/lava-coordinator/lava-coordinator.conf")
+        self.json_data = json_data
+        # FIXME: do this with a schema once the API settles
+        if 'target_group' not in json_data:
+            raise ValueError("Invalid JSON to work with the MultiNode Coordinator: no target_group.")
+        self.group_name = json_data['target_group']
+        if 'group_size' not in json_data:
+            raise ValueError("Invalid JSON to work with the Coordinator: no group_size")
+        self.group_size = json_data["group_size"]
+        if 'target' not in json_data:
+            raise ValueError("Invalid JSON for a child node: no target designation.")
+        self.target = json_data['target']
+        if 'timeout' not in json_data:
+            raise ValueError("Invalid JSON - no default timeout specified.")
+        if "sub_id" not in json_data:
+            logging.info("Error in JSON - no sub_id specified. Results cannot be aggregated.")
+            json_data['sub_id'] = None
+        if 'port' in json_data:
+            # lava-coordinator provides a conffile for the port and blocksize.
+            logging.debug("Port is no longer supported in the incoming JSON. Using %d" % settings["port"])
+        if 'role' in json_data:
+            self.role = json_data['role']
+        # hostname of the server for the connection.
+        if 'hostname' in json_data:
+            # lava-coordinator provides a conffile for the group_hostname
+            logging.debug("Coordinator hostname is no longer supported in the incoming JSON. Using %s"
+                          % settings['coordinator_hostname'])
+        self.base_msg = {"port": settings['port'],
+                         "blocksize": settings['blocksize'],
+                         "step": settings["poll_delay"],
+                         "timeout": json_data['timeout'],
+                         "host": settings['coordinator_hostname'],
+                         "client_name": json_data['target'],
+                         "group_name": json_data['target_group'],
+                         # hostname here is the node hostname, not the server.
+                         "hostname": gethostname(),
+                         "role": self.role,
+                         }
+        self.client_name = json_data['target']
+        self.poller = Poller(json.dumps(self.base_msg))
+        self.oob_file = oob_file
+        self.output_dir = output_dir
+
+    def run(self):
+        """
+        Initialises the node into the group, registering the group if necessary
+        (via group_size) and *waiting* until the rest of the group nodes also
+        register before starting the actual job,
+        """
+        init_msg = {"request": "group_data", "group_size": self.group_size}
+        init_msg.update(self.base_msg)
+        logging.info("Starting Multi-Node communications for group '%s'" % self.group_name)
+        logging.debug("init_msg %s" % json.dumps(init_msg))
+        response = json.loads(self.poller.poll(json.dumps(init_msg)))
+        logging.info("Starting the test run for %s in group %s" % (self.client_name, self.group_name))
+        self.run_tests(self.json_data, response)
+        # send a message to the GroupDispatcher to close the group (when all nodes have sent fin_msg)
+        fin_msg = {"request": "clear_group", "group_size": self.group_size}
+        fin_msg.update(self.base_msg)
+        logging.debug("fin_msg %s" % json.dumps(fin_msg))
+        self.poller.poll(json.dumps(fin_msg))
+
+    def __call__(self, args):
+        """ Makes the NodeDispatcher callable so that the test shell can send messages just using the
+        NodeDispatcher object.
+        This function blocks until the specified API call returns. Some API calls may involve a
+        substantial period of polling.
+        :param args: JSON string of the arguments of the API call to make
+        :return: A Python object containing the reply dict from the API call
+        """
+        try:
+            return self._select(json.loads(args))
+        except KeyError:
+            logging.warn("Unable to handle request for: %s" % args)
+
+    def _select(self, json_data):
+        """ Determines which API call has been requested, makes the call, blocks and returns the reply.
+        :param json_data: Python object of the API call
+        :return: Python object containing the reply dict.
+        """
+        reply_str = ''
+        if not json_data:
+            logging.debug("Empty args")
+            return
+        if 'request' not in json_data:
+            logging.debug("Bad call")
+            return
+        if json_data["request"] == "aggregate":
+            # no message processing here, just the bundles.
+            return self._aggregation(json_data)
+        messageID = json_data['messageID']
+        if json_data['request'] == "lava_sync":
+            logging.info("requesting lava_sync '%s'" % messageID)
+            reply_str = self.request_sync(messageID)
+        elif json_data['request'] == 'lava_wait':
+            logging.info("requesting lava_wait '%s'" % messageID)
+            reply_str = self.request_wait(messageID)
+        elif json_data['request'] == 'lava_wait_all':
+            if 'role' in json_data and json_data['role'] is not None:
+                reply_str = self.request_wait_all(messageID, json_data['role'])
+                logging.info("requesting lava_wait_all '%s' '%s'" % (messageID, json_data['role']))
+            else:
+                logging.info("requesting lava_wait_all '%s'" % messageID)
+                reply_str = self.request_wait_all(messageID)
+        elif json_data['request'] == "lava_send":
+            logging.info("requesting lava_send %s" % messageID)
+            reply_str = self.request_send(messageID, json_data['message'])
+        reply = json.loads(str(reply_str))
+        if 'message' in reply:
+            return reply['message']
+        else:
+            return reply['response']
+
+    def _aggregation(self, json_data):
+        """ Internal call to send the bundle message to the coordinator so that the node
+        with sub_id zero will get the complete bundle and everyone else a blank bundle.
+        :param json_data: Arbitrary data from the job which will form the result bundle
+        """
+        if json_data["bundle"] is None:
+            logging.info("Notifyng LAVA Controller of job completion")
+        else:
+            logging.info("Passing results bundle to LAVA Coordinator.")
+        reply_str = self._send(json_data)
+        reply = json.loads(str(reply_str))
+        if 'message' in reply:
+            return reply['message']
+        else:
+            return reply['response']
+
+    def _send(self, msg):
+        """ Internal call to perform the API call via the Poller.
+        :param msg: The call-specific message to be wrapped in the base_msg primitive.
+        :return: Python object of the reply dict.
+        """
+        new_msg = copy.deepcopy(self.base_msg)
+        new_msg.update(msg)
+        if 'bundle' in new_msg:
+            logging.debug("sending result bundle")
+        else:
+            logging.debug("sending Message %s" % json.dumps(new_msg))
+        return self.poller.poll(json.dumps(new_msg))
+
+    def request_wait_all(self, messageID, role=None):
+        """
+        Asks the Coordinator to send back a particular messageID
+        and blocks until that messageID is available for all nodes in
+        this group or all nodes with the specified role in this group.
+        """
+        # FIXME: if this node has not called request_send for the
+        # messageID used for a wait_all, the node should log a warning
+        # of a broken test definition.
+        if role:
+            return self._send({"request": "lava_wait_all",
+                              "messageID": messageID,
+                              "waitrole": role})
+        else:
+            return self._send({"request": "lava_wait_all",
+                              "messageID": messageID})
+
+    def request_wait(self, messageID):
+        """
+        Asks the Coordinator to send back a particular messageID
+        and blocks until that messageID is available for this node
+        """
+        # use self.target as the node ID
+        wait_msg = {"request": "lava_wait",
+                    "messageID": messageID,
+                    "nodeID": self.target}
+        return self._send(wait_msg)
+
+    def request_send(self, messageID, message):
+        """
+        Sends a message to the group via the Coordinator. The
+        message is guaranteed to be available to all members of the
+        group. The message is only picked up when a client in the group
+        calls lava_wait or lava_wait_all.
+        The message needs to be formatted JSON, not a simple string.
+        { "messageID": "string", "message": { "key": "value"} }
+        The message can consist of just the messageID:
+        { "messageID": "string" }
+        """
+        send_msg = {"request": "lava_send",
+                    "messageID": messageID,
+                    "message": message}
+        return self._send(send_msg)
+
+    def request_sync(self, msg):
+        """
+        Creates and send a message requesting lava_sync
+        """
+        sync_msg = {"request": "lava_sync", "messageID": msg}
+        return self._send(sync_msg)
+
+    def run_tests(self, json_jobdata, group_data):
+        if 'response' in group_data and group_data['response'] == 'nack':
+            logging.error("Unable to initiliase a Multi-Node group - timed out waiting for other devices.")
+            return
+        config = get_config()
+        if 'logging_level' in json_jobdata:
+            logging.root.setLevel(json_jobdata["logging_level"])
+        else:
+            logging.root.setLevel(config.logging_level)
+        if 'target' not in json_jobdata:
+            logging.error("The job file does not specify a target device.")
+            exit(1)
+        jobdata = json.dumps(json_jobdata)
+        if self.output_dir and not os.path.isdir(self.output_dir):
+            os.makedirs(self.output_dir)
+        job = LavaTestJob(jobdata, self.oob_file, config, self.output_dir)
+        # pass this NodeDispatcher down so that the lava_test_shell can __call__ nodeTransport to write a message
+        job.run(self, group_data)

=== modified file 'lava_dispatcher/__init__.py'
--- lava_dispatcher/__init__.py	2013-01-30 18:45:16 +0000
+++ lava_dispatcher/__init__.py	2013-08-19 10:36:46 +0000
@@ -18,4 +18,4 @@ 
 # along
 # with this program; if not, see <http://www.gnu.org/licenses>.
 
-__version__ = (0, 32, 2, "final", 0)
+__version__ = (0, 33, 1, "dev", 0)

=== modified file 'lava_dispatcher/actions/deploy.py'
--- lava_dispatcher/actions/deploy.py	2013-08-23 03:48:42 +0000
+++ lava_dispatcher/actions/deploy.py	2013-08-28 14:55:50 +0000
@@ -55,6 +55,7 @@ 
             'image': {'type': 'string', 'optional': True},
             'rootfstype': {'type': 'string', 'optional': True},
             'bootloader': {'type': 'string', 'optional': True, 'default': 'u_boot'},
+            'role': {'type': 'string', 'optional': True},
         },
         'additionalProperties': False,
     }

=== modified file 'lava_dispatcher/actions/launch_control.py'
--- lava_dispatcher/actions/launch_control.py	2013-07-16 15:59:20 +0000
+++ lava_dispatcher/actions/launch_control.py	2013-08-27 14:37:33 +0000
@@ -24,7 +24,7 @@ 
 import tempfile
 import urlparse
 import xmlrpclib
-
+import simplejson
 from lava_tool.authtoken import AuthenticatingServerProxy, MemoryAuthBackend
 
 from linaro_dashboard_bundle.io import DocumentIO
@@ -182,6 +182,10 @@ 
         return bundles
 
     def run(self, server, stream, result_disk="testrootfs", token=None):
+        main_bundle = self.collect_bundles(result_disk)
+        self.submit_bundle(main_bundle, server, stream, token)
+
+    def collect_bundles(self, server=None, stream=None, result_disk="testrootfs", token=None):
         all_bundles = []
         status = 'pass'
         err_msg = ''
@@ -205,8 +209,7 @@ 
         self.context.test_data.add_result('gather_results', status, err_msg)
 
         main_bundle = self.combine_bundles(all_bundles)
-
-        self.submit_bundle(main_bundle, server, stream, token)
+        return main_bundle
 
     def combine_bundles(self, all_bundles):
         if not all_bundles:
@@ -228,6 +231,10 @@ 
         for test_run in main_bundle['test_runs']:
             attributes = test_run.get('attributes', {})
             attributes.update(self.context.test_data.get_metadata())
+            if "group_size" in attributes:
+                grp_size = attributes['group_size']
+                del attributes['group_size']
+                attributes['group_size'] = "%d" % grp_size
             test_run['attributes'] = attributes
 
         return main_bundle
@@ -247,6 +254,56 @@ 
             logging.warning("Fault string: %s" % err.faultString)
             raise OperationFailed("could not push to dashboard")
 
+    def submit_pending(self, bundle, server, stream, token, group_name):
+        """ Called from the dispatcher job when a MultiNode job requests to
+        submit results but the job does not have sub_id zero. The bundle is
+        cached in the dashboard until the coordinator allows sub_id zero to
+        call submit_group_list.
+        :param bundle: A single bundle which is part of the group
+        :param server: Where the bundle will be cached
+        :param token: token to allow access
+        :param group_name: MultiNode group unique ID
+        :raise: OperationFailed if the xmlrpclib call fails
+        """
+        dashboard = _get_dashboard(server, token)
+        json_bundle = simplejson.dumps(bundle)
+        try:
+            # make the put_pending xmlrpc call to store the bundle in the dashboard until the group is complete.
+            result = dashboard.put_pending(json_bundle, stream, group_name)
+            print >> self.context.oob_file, "dashboard-put-pending:", result
+            logging.info("Dashboard: bundle %s is pending in %s" % (result, group_name))
+        except xmlrpclib.Fault, err:
+            logging.warning("xmlrpclib.Fault occurred")
+            logging.warning("Fault code: %d" % err.faultCode)
+            logging.warning("Fault string: %s" % err.faultString)
+            raise OperationFailed("could not push pending bundle to dashboard")
+
+    def submit_group_list(self, bundle, server, stream, token, group_name):
+        """ Called from the dispatcher job when a MultiNode job has been
+         allowed by the coordinator to aggregate the group bundles as
+         all jobs in the group have registered bundle checksums with the coordinator.
+        :param bundle: The single bundle from this job to be added to the pending list.
+        :param server: Where the aggregated bundle will be submitted
+        :param stream: The bundle stream to use
+        :param token: The token to allow access
+        :param group_name: MultiNode group unique ID
+        :raise: OperationFailed if the xmlrpclib call fails
+        """
+        dashboard = _get_dashboard(server, token)
+        json_bundle = simplejson.dumps(bundle)
+        job_name = self.context.job_data.get("job_name", "LAVA Results")
+        try:
+            # make the put_group xmlrpc call to aggregate the bundles for the entire group & submit.
+            result = dashboard.put_group(json_bundle, job_name, stream, group_name)
+            print >> self.context.oob_file, "dashboard-group:", result, job_name
+            self.context.output.write_named_data('result-bundle', result)
+            logging.info("Dashboard: bundle %s is to be aggregated into %s" % (result, group_name))
+        except xmlrpclib.Fault, err:
+            logging.warning("xmlrpclib.Fault occurred")
+            logging.warning("Fault code: %d" % err.faultCode)
+            logging.warning("Fault string: %s" % err.faultString)
+            raise OperationFailed("could not push group bundle to dashboard")
+
 
 class cmd_submit_results_on_host(cmd_submit_results):
     pass

=== modified file 'lava_dispatcher/actions/lava_test_shell.py'
--- lava_dispatcher/actions/lava_test_shell.py	2013-07-23 08:12:14 +0000
+++ lava_dispatcher/actions/lava_test_shell.py	2013-08-28 14:55:50 +0000
@@ -134,6 +134,16 @@ 
 from lava_dispatcher.downloader import download_image
 
 LAVA_TEST_DIR = '%s/../../lava_test_shell' % os.path.dirname(__file__)
+LAVA_MULTI_NODE_TEST_DIR = '%s/../../lava_test_shell/multi_node' % os.path.dirname(__file__)
+
+LAVA_GROUP_FILE = 'lava-group'
+LAVA_ROLE_FILE = 'lava-role'
+LAVA_SELF_FILE = 'lava-self'
+LAVA_SEND_FILE = 'lava-send'
+LAVA_SYNC_FILE = 'lava-sync'
+LAVA_WAIT_FILE = 'lava-wait'
+LAVA_WAIT_ALL_FILE = 'lava-wait-all'
+LAVA_MULTI_NODE_CACHE_FILE = '/tmp/lava_multi_node_cache.txt'
 
 Target.android_deployment_data['distro'] = 'android'
 Target.android_deployment_data['lava_test_sh_cmd'] = '/system/bin/mksh'
@@ -508,20 +518,21 @@ 
                               'items': {'type': 'object',
                                         'properties':
                                         {'git-repo': {'type': 'string',
-                                                      'optional': True},
-                                         'bzr-repo': {'type': 'string',
-                                                      'optional': True},
-                                         'tar-repo': {'type': 'string',
-                                                      'optional': True},
-                                         'revision': {'type': 'string',
-                                                      'optional': True},
-                                         'testdef': {'type': 'string',
-                                                     'optional': True}
+                                                'optional': True},
+                                        'bzr-repo': {'type': 'string',
+                                                'optional': True},
+                                        'tar-repo': {'type': 'string',
+                                                'optional': True},
+                                        'revision': {'type': 'string',
+                                                'optional': True},
+                                        'testdef': {'type': 'string',
+                                                'optional': True}
                                          },
                                         'additionalProperties': False},
                               'optional': True
                               },
             'timeout': {'type': 'integer', 'optional': True},
+            'role': {'type': 'string', 'optional': True},
         },
         'additionalProperties': False,
     }
@@ -531,7 +542,7 @@ 
 
         testdefs_by_uuid = self._configure_target(target, testdef_urls, testdef_repos)
 
-        signal_director = SignalDirector(self.client, testdefs_by_uuid)
+        signal_director = SignalDirector(self.client, testdefs_by_uuid, self.context)
 
         with target.runner() as runner:
             runner.wait_for_prompt(timeout)
@@ -544,6 +555,7 @@ 
             if timeout == -1:
                 timeout = runner._connection.timeout
             initial_timeout = timeout
+            signal_director.set_connection(runner._connection)
             while self._keep_running(runner, timeout, signal_director):
                 elapsed = time.time() - start
                 timeout = int(initial_timeout - elapsed)
@@ -556,6 +568,7 @@ 
             pexpect.EOF,
             pexpect.TIMEOUT,
             '<LAVA_SIGNAL_(\S+) ([^>]+)>',
+            '<LAVA_MULTI_NODE> <LAVA_(\S+) ([^>]+)>',
         ]
 
         idx = runner._connection.expect(patterns, timeout=timeout)
@@ -575,6 +588,16 @@ 
                 logging.exception("on_signal failed")
             runner._connection.sendline('echo LAVA_ACK')
             return True
+        elif idx == 4:
+            name, params = runner._connection.match.groups()
+            logging.debug("Received Multi_Node API <LAVA_%s>" % name)
+            params = params.split()
+            ret = False
+            try:
+                ret = signal_director.signal(name, params)
+            except:
+                logging.exception("on_signal(Multi_Node) failed")
+            return ret
 
         return False
 
@@ -598,6 +621,37 @@ 
                     fout.write(fin.read())
                     os.fchmod(fout.fileno(), XMOD)
 
+    def _inject_multi_node_api(self, mntdir, target):
+        shell = target.deployment_data['lava_test_sh_cmd']
+
+        # Generic scripts
+        scripts_to_copy = glob(os.path.join(LAVA_MULTI_NODE_TEST_DIR, 'lava-*'))
+
+        for fname in scripts_to_copy:
+            with open(fname, 'r') as fin:
+                foutname = os.path.basename(fname)
+                with open('%s/bin/%s' % (mntdir, foutname), 'w') as fout:
+                    fout.write("#!%s\n\n" % shell)
+                    # Target-specific scripts (add ENV to the generic ones)
+                    if foutname == LAVA_GROUP_FILE:
+                        fout.write('LAVA_GROUP="\n')
+                        if 'roles' in self.context.group_data:
+                            for client_name in self.context.group_data['roles']:
+                                fout.write(r"\t%s\t%s\n" % (client_name, self.context.group_data['roles'][client_name]))
+                        else:
+                            logging.debug("group data MISSING")
+                        fout.write('"\n')
+                    elif foutname == LAVA_ROLE_FILE:
+                        fout.write("TARGET_ROLE='%s'\n" % self.context.test_data.metadata['role'])
+                    elif foutname == LAVA_SELF_FILE:
+                        fout.write("LAVA_HOSTNAME='%s'\n" % self.context.test_data.metadata['target.hostname'])
+                    else:
+                        fout.write("LAVA_TEST_BIN='%s/bin'\n" % target.deployment_data['lava_test_dir'])
+                        fout.write("LAVA_MULTI_NODE_CACHE='%s'\n" % LAVA_MULTI_NODE_CACHE_FILE)
+                        if self.context.test_data.metadata['logging_level'] == 'DEBUG':
+                            fout.write("LAVA_MULTI_NODE_DEBUG='yes'\n")
+                    fout.write(fin.read())
+                    os.fchmod(fout.fileno(), XMOD)
 
     def _mk_runner_dirs(self, mntdir):
         utils.ensure_directory('%s/bin' % mntdir)
@@ -613,6 +667,8 @@ 
         with target.file_system(results_part, 'lava') as d:
             self._mk_runner_dirs(d)
             self._copy_runner(d, target)
+            if 'target_group' in self.context.test_data.metadata:
+                self._inject_multi_node_api(d, target)
 
             testdef_loader = TestDefinitionLoader(self.context, target.scratch_dir)
 

=== modified file 'lava_dispatcher/config.py'
--- lava_dispatcher/config.py	2013-08-12 02:30:38 +0000
+++ lava_dispatcher/config.py	2013-08-28 14:55:50 +0000
@@ -235,7 +235,6 @@ 
     if not config_files:
         raise Exception("no config files named %r found" % (name + ".conf"))
     config_files.reverse()
-    logging.debug("About to read %s", str(config_files))
     for path in config_files:
         _read_into(path, cp)
     return cp

=== modified file 'lava_dispatcher/context.py'
--- lava_dispatcher/context.py	2013-07-24 16:56:18 +0000
+++ lava_dispatcher/context.py	2013-08-28 14:55:50 +0000
@@ -129,7 +129,7 @@ 
     def run_command(self, command, failok=True):
         """run command 'command' with output going to output-dir if specified"""
         if isinstance(command, (str, unicode)):
-            command = ['sh', '-c', command]
+            command = ['nice', 'sh', '-c', command]
         logging.debug("Executing on host : '%r'" % command)
         output_args = {
             'stdout': self.logfile_read,
@@ -151,3 +151,13 @@ 
     def finish(self):
         self.client.finish()
 
+    def assign_transport(self, transport):
+        self.transport = transport
+
+    def assign_group_data(self, group_data):
+        """
+        :param group_data: Arbitrary data related to the
+        group configuration, passed in via the GroupDispatcher
+        Used by lava-group
+        """
+        self.group_data = group_data

=== removed file 'lava_dispatcher/default-config/lava-dispatcher/device-types/aa9.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/aa9.conf	2013-08-27 23:46:36 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/aa9.conf	1970-01-01 00:00:00 +0000
@@ -1,27 +0,0 @@ 
-client_type = bootloader
-
-boot_cmds = 
-    setenv bootcmd "'fatload mmc 0:3 0x40000000 uImage; fatload mmc 0:3 0x41100000 uInitrd; fatload mmc 0:3 0x41000000 board.dtb; bootm 0x40000000 0x41100000 0x41000000'",
-    setenv bootargs "'console=ttyS0,115200n8 root=LABEL=testrootfs rootwait ro'",
-    boot
-
-boot_cmds_android = 
-    setenv bootcmd "'fatload mmc 0:3 0x40000000 uImage; fatload mmc 0:3 0x41100000 uInitrd; fatload mmc 0:3 0x41000000 mb8ac0300eb.dtb; bootm 0x40000000 0x41100000 0x41000000'",
-    setenv bootargs "'console=ttyS0,115200n8 init=/init rootwait rw androidboot.hardware=fujitsusemiconductormb8ac0300-e'",
-    boot
-
-image_boot_msg = Starting kernel
-
-possible_partitions_files =
-    init.partitions.rc
-    fstab.partitions
-    init.rc
-    fstab.fujitsusemiconductormb8ac0300-e
-
-bootloader_prompt = u-boot
-
-boot_options =
-    boot_cmds
-
-[boot_cmds]
-default = boot_cmds

=== added file 'lava_dispatcher/default-config/lava-dispatcher/device-types/aa9.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/aa9.conf	1970-01-01 00:00:00 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/aa9.conf	2013-08-28 14:55:50 +0000
@@ -0,0 +1,27 @@ 
+client_type = bootloader
+
+boot_cmds = 
+    setenv bootcmd "'fatload mmc 0:3 0x40000000 uImage; fatload mmc 0:3 0x41100000 uInitrd; fatload mmc 0:3 0x41000000 board.dtb; bootm 0x40000000 0x41100000 0x41000000'",
+    setenv bootargs "'console=ttyS0,115200n8 root=LABEL=testrootfs rootwait ro'",
+    boot
+
+boot_cmds_android = 
+    setenv bootcmd "'fatload mmc 0:3 0x40000000 uImage; fatload mmc 0:3 0x41100000 uInitrd; fatload mmc 0:3 0x41000000 mb8ac0300eb.dtb; bootm 0x40000000 0x41100000 0x41000000'",
+    setenv bootargs "'console=ttyS0,115200n8 init=/init rootwait rw androidboot.hardware=fujitsusemiconductormb8ac0300-e'",
+    boot
+
+image_boot_msg = Starting kernel
+
+possible_partitions_files =
+    init.partitions.rc
+    fstab.partitions
+    init.rc
+    fstab.fujitsusemiconductormb8ac0300-e
+
+bootloader_prompt = u-boot
+
+boot_options =
+    boot_cmds
+
+[boot_cmds]
+default = boot_cmds

=== removed file 'lava_dispatcher/default-config/lava-dispatcher/device-types/capri.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/capri.conf	2013-06-18 01:41:07 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/capri.conf	1970-01-01 00:00:00 +0000
@@ -1,46 +0,0 @@ 
-client_type = capri
-
-# The ADB command line.
-#
-# In the case where there are multiple android devices plugged into a
-# single host, this connection command must be overriden on each device to
-# include the serial number of the device, e.g.
-#
-#   serial_number = XXXXXXXXXXXXXXXX
-#   adb_command = adb -s %(serial_number)s
-adb_command = adb
-
-# The fastboot command.
-#
-# The same as above: if you have more than one device, you will want to
-# override this in your device config to add a serial number, e.g.
-#
-#   serial_number = XXXXXXXXXXXXXXXX
-#   fastboot_command = fastboot -s %(serial_number)s
-#
-# Of course, in the case you override both adb_command *and* fastboot_command,
-# you don't need to specify `serial_number` twice.
-fastboot_command = fastboot
-
-# Working directory for temporary files. By default, the usual place for LAVA
-# images will be used.
-#
-# This is useful when the lava dispatcher is controlling the device under test which is
-# physically plugged to other machines by setting adb_command to something like
-# "ssh <phone-host> adb" and fastboot_command to something like "ssh
-# <phone-host> fastboot". adb and fastboot always operate on local files, so
-# you need your local files to also be seen as local files on the host where
-# adb/fastboot are executed.
-#
-# In this case, you should set shared_working_directory to a shared directory
-# between the machine running the dispatcher and the machine where the phone is
-# plugged.  This shared directory must have the same path in both machines.
-# For example, you can have your /var/tmp/lava mounted at /var/tmp/lava at
-# <phone-host> (or the other way around).
-shared_working_directory =
-
-connection_command = %(adb_command)s shell
-
-enable_network_after_boot_android = false
-android_adb_over_usb = true
-android_adb_over_tcp = false

=== added file 'lava_dispatcher/default-config/lava-dispatcher/device-types/capri.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/capri.conf	1970-01-01 00:00:00 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/capri.conf	2013-07-02 15:12:52 +0000
@@ -0,0 +1,46 @@ 
+client_type = capri
+
+# The ADB command line.
+#
+# In the case where there are multiple android devices plugged into a
+# single host, this connection command must be overriden on each device to
+# include the serial number of the device, e.g.
+#
+#   serial_number = XXXXXXXXXXXXXXXX
+#   adb_command = adb -s %(serial_number)s
+adb_command = adb
+
+# The fastboot command.
+#
+# The same as above: if you have more than one device, you will want to
+# override this in your device config to add a serial number, e.g.
+#
+#   serial_number = XXXXXXXXXXXXXXXX
+#   fastboot_command = fastboot -s %(serial_number)s
+#
+# Of course, in the case you override both adb_command *and* fastboot_command,
+# you don't need to specify `serial_number` twice.
+fastboot_command = fastboot
+
+# Working directory for temporary files. By default, the usual place for LAVA
+# images will be used.
+#
+# This is useful when the lava dispatcher is controlling the device under test which is
+# physically plugged to other machines by setting adb_command to something like
+# "ssh <phone-host> adb" and fastboot_command to something like "ssh
+# <phone-host> fastboot". adb and fastboot always operate on local files, so
+# you need your local files to also be seen as local files on the host where
+# adb/fastboot are executed.
+#
+# In this case, you should set shared_working_directory to a shared directory
+# between the machine running the dispatcher and the machine where the phone is
+# plugged.  This shared directory must have the same path in both machines.
+# For example, you can have your /var/tmp/lava mounted at /var/tmp/lava at
+# <phone-host> (or the other way around).
+shared_working_directory =
+
+connection_command = %(adb_command)s shell
+
+enable_network_after_boot_android = false
+android_adb_over_usb = true
+android_adb_over_tcp = false

=== modified file 'lava_dispatcher/default-config/lava-dispatcher/device-types/mx53loco.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/mx53loco.conf	2013-08-14 21:48:44 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/mx53loco.conf	2013-08-28 14:55:50 +0000
@@ -35,3 +35,4 @@ 
 
 [boot_cmds]
 default = boot_cmds
+read_boot_cmds_from_image = 0

=== removed file 'lava_dispatcher/default-config/lava-dispatcher/device-types/nexus10.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/nexus10.conf	2013-06-20 00:42:56 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/nexus10.conf	1970-01-01 00:00:00 +0000
@@ -1,46 +0,0 @@ 
-client_type = nexus10
-
-# The ADB command line.
-#
-# In the case where there are multiple android devices plugged into a
-# single host, this connection command must be overriden on each device to
-# include the serial number of the device, e.g.
-#
-#   serial_number = XXXXXXXXXXXXXXXX
-#   adb_command = adb -s %(serial_number)s
-adb_command = adb
-
-# The fastboot command.
-#
-# The same as above: if you have more than one device, you will want to
-# override this in your device config to add a serial number, e.g.
-#
-#   serial_number = XXXXXXXXXXXXXXXX
-#   fastboot_command = fastboot -s %(serial_number)s
-#
-# Of course, in the case you override both adb_command *and* fastboot_command,
-# you don't need to specify `serial_number` twice.
-fastboot_command = fastboot
-
-# Working directory for temporary files. By default, the usual place for LAVA
-# images will be used.
-#
-# This is useful when the lava dispatcher is controlling the device under test which is
-# physically plugged to other machines by setting adb_command to something like
-# "ssh <phone-host> adb" and fastboot_command to something like "ssh
-# <phone-host> fastboot". adb and fastboot always operate on local files, so
-# you need your local files to also be seen as local files on the host where
-# adb/fastboot are executed.
-#
-# In this case, you should set shared_working_directory to a shared directory
-# between the machine running the dispatcher and the machine where the phone is
-# plugged.  This shared directory must have the same path in both machines.
-# For example, you can have your /var/tmp/lava mounted at /var/tmp/lava at
-# <phone-host> (or the other way around).
-shared_working_directory =
-
-connection_command = %(adb_command)s shell
-
-enable_network_after_boot_android = false
-android_adb_over_usb = true
-android_adb_over_tcp = false

=== added file 'lava_dispatcher/default-config/lava-dispatcher/device-types/nexus10.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/nexus10.conf	1970-01-01 00:00:00 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/nexus10.conf	2013-07-02 15:12:52 +0000
@@ -0,0 +1,46 @@ 
+client_type = nexus10
+
+# The ADB command line.
+#
+# In the case where there are multiple android devices plugged into a
+# single host, this connection command must be overriden on each device to
+# include the serial number of the device, e.g.
+#
+#   serial_number = XXXXXXXXXXXXXXXX
+#   adb_command = adb -s %(serial_number)s
+adb_command = adb
+
+# The fastboot command.
+#
+# The same as above: if you have more than one device, you will want to
+# override this in your device config to add a serial number, e.g.
+#
+#   serial_number = XXXXXXXXXXXXXXXX
+#   fastboot_command = fastboot -s %(serial_number)s
+#
+# Of course, in the case you override both adb_command *and* fastboot_command,
+# you don't need to specify `serial_number` twice.
+fastboot_command = fastboot
+
+# Working directory for temporary files. By default, the usual place for LAVA
+# images will be used.
+#
+# This is useful when the lava dispatcher is controlling the device under test which is
+# physically plugged to other machines by setting adb_command to something like
+# "ssh <phone-host> adb" and fastboot_command to something like "ssh
+# <phone-host> fastboot". adb and fastboot always operate on local files, so
+# you need your local files to also be seen as local files on the host where
+# adb/fastboot are executed.
+#
+# In this case, you should set shared_working_directory to a shared directory
+# between the machine running the dispatcher and the machine where the phone is
+# plugged.  This shared directory must have the same path in both machines.
+# For example, you can have your /var/tmp/lava mounted at /var/tmp/lava at
+# <phone-host> (or the other way around).
+shared_working_directory =
+
+connection_command = %(adb_command)s shell
+
+enable_network_after_boot_android = false
+android_adb_over_usb = true
+android_adb_over_tcp = false

=== added file 'lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_foundation-armv8.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_foundation-armv8.conf	1970-01-01 00:00:00 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_foundation-armv8.conf	2013-07-02 15:12:52 +0000
@@ -0,0 +1,20 @@ 
+client_type=fastmodel
+
+# how long the disablesuspend script should take to complete
+# fm takes longer than other android images do
+disablesuspend_timeout = 500
+
+# how long ubuntu takes to boot to prompt
+boot_linaro_timeout = 500
+
+# if you do dhcp on boot, adb will not work (asac) on fastmodels
+enable_network_after_boot_android = 0
+
+# we do usermode networking over the loopback
+default_network_interface = lo
+
+simulator_axf_files = img-foundation.axf
+
+simulator_version_command = /opt/arm/Foundation_v8pkg/Foundation_v8 --version | grep "ARM V8 Foundation Model" | sed 's/ARM V8 Foundation Model //'
+
+simulator_command = sudo -u www-data /opt/arm/Foundation_v8pkg/Foundation_v8 --image={AXF} --block-device={IMG} --network=nat

=== removed file 'lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_foundation-armv8.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_foundation-armv8.conf	2013-06-19 16:22:43 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_foundation-armv8.conf	1970-01-01 00:00:00 +0000
@@ -1,20 +0,0 @@ 
-client_type=fastmodel
-
-# how long the disablesuspend script should take to complete
-# fm takes longer than other android images do
-disablesuspend_timeout = 500
-
-# how long ubuntu takes to boot to prompt
-boot_linaro_timeout = 500
-
-# if you do dhcp on boot, adb will not work (asac) on fastmodels
-enable_network_after_boot_android = 0
-
-# we do usermode networking over the loopback
-default_network_interface = lo
-
-simulator_axf_files = img-foundation.axf
-
-simulator_version_command = /opt/arm/Foundation_v8pkg/Foundation_v8 --version | grep "ARM V8 Foundation Model" | sed 's/ARM V8 Foundation Model //'
-
-simulator_command = sudo -u www-data /opt/arm/Foundation_v8pkg/Foundation_v8 --image={AXF} --block-device={IMG} --network=nat

=== added file 'lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x1-a7x1.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x1-a7x1.conf	1970-01-01 00:00:00 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x1-a7x1.conf	2013-07-03 10:11:50 +0000
@@ -0,0 +1,117 @@ 
+client_type=fastmodel
+
+# how long the disablesuspend script should take to complete
+# fm takes longer than other android images do
+disablesuspend_timeout = 500
+
+# how long ubuntu takes to boot to prompt
+boot_linaro_timeout = 800
+
+# if you do dhcp on boot, adb will not work (asac) on fastmodels
+enable_network_after_boot_android = 0
+
+# we do usermode networking over the loopback
+default_network_interface = lo
+
+bootloader_prompt = Start:
+
+interrupt_boot_prompt = The default boot selection will start in
+
+interrupt_boot_command = break
+
+# UEFI boot commands
+boot_cmds = sendline a,
+           expect Choice:,
+           sendline 1,
+           expect Select the Boot Device:,
+           sendline 2,
+           expect File path of the EFI Application or the kernel:,
+           sendline uImage,
+           expect [a/g/l],
+           sendline l,
+           expect Add an initrd: [y/n],
+           sendline y,
+           expect File path of the initrd:,
+           sendline uInitrd,
+           expect Arguments to pass to the binary:,
+           sendline 'console=ttyAMA0,38400n8 root=/dev/mmcblk0p2 rootwait ro mem=1024M',
+           expect File path of the local FDT:,
+           sendline rtsm\\rtsm_ve-ca15x1-ca7x1.dtb,
+           expect Description for this new Entry:,
+           sendline Test Image,
+           expect Choice:,
+           sendline 5,
+           expect Start:,
+           sendline 2
+
+simulator_axf_files =
+    img.axf
+    linux-system-ISW.axf
+    linux-system-semi.axf
+
+simulator_kernel_files =
+    uImage
+    vmlinuz.*
+
+simulator_initrd_files =
+    uInitrd
+    initrd.*
+
+simulator_dtb = rtsm_ve-ca15x1-ca7x1.dtb
+simulator_uefi = uefi_rtsm_ve-ca15.bin
+
+license_file = 8224@localhost
+sim_bin = /opt/arm/RTSM_A15-A7x14_VE/Linux64_RTSM_VE_Cortex-A15x1-A7x1/RTSM_VE_Cortex-A15x1-A7x1
+android_adb_port = 6555
+
+simulator_version_command = %(sim_bin)s --version | grep "Fast Models" | sed 's/Fast Models \[//' | sed 's/\]//'
+
+simulator_boot_wrapper = -a coretile.cluster0.*={AXF}
+
+simulator_command = sudo -u www-data ARMLMD_LICENSE_FILE="%(license_file)s" %(sim_bin)s
+
+boot_options =
+        motherboard.mmc.p_mmc_file
+	motherboard.hostbridge.userNetPorts
+	motherboard.smsc_91c111.enabled
+	motherboard.hostbridge.userNetworking
+        motherboard.flashloader0.fname
+        motherboard.flashloader1.fname
+        motherboard.flashloader1.fnameWrite
+	coretile.cache_state_modelled
+	coretile.cluster0.cpu0.semihosting-enable
+	coretile.cluster0.cpu0.semihosting-cmd_line
+
+[motherboard.mmc.p_mmc_file]
+default = {IMG}
+
+[motherboard.hostbridge.userNetPorts]
+default="%(android_adb_port)s=%(android_adb_port)s"
+
+[motherboard.smsc_91c111.enabled]
+default = 1
+allowed = 0,1
+
+[motherboard.hostbridge.userNetworking]
+default = 1
+allowed = 0,1
+
+[motherboard.flashloader0.fname]
+default = {UEFI}
+
+[motherboard.flashloader1.fname]
+default = uefi-vars.fd
+
+[motherboard.flashloader1.fnameWrite]
+default = uefi-vars.fd
+
+[coretile.cache_state_modelled]
+default = 0
+allowed = 0,1
+
+[coretile.cluster0.cpu0.semihosting-enable]
+default = 1
+allowed = 0,1
+
+[coretile.cluster0.cpu0.semihosting-cmd_line]
+default = "--kernel {KERNEL} --dtb {DTB} --initrd {INITRD} -- console=ttyAMA0,38400n8  root=/dev/mmcblk0p2  rootwait ro mem=1024M"

=== removed file 'lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x1-a7x1.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x1-a7x1.conf	2013-06-28 10:01:48 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x1-a7x1.conf	1970-01-01 00:00:00 +0000
@@ -1,117 +0,0 @@ 
-client_type=fastmodel
-
-# how long the disablesuspend script should take to complete
-# fm takes longer than other android images do
-disablesuspend_timeout = 500
-
-# how long ubuntu takes to boot to prompt
-boot_linaro_timeout = 800
-
-# if you do dhcp on boot, adb will not work (asac) on fastmodels
-enable_network_after_boot_android = 0
-
-# we do usermode networking over the loopback
-default_network_interface = lo
-
-bootloader_prompt = Start:
-
-interrupt_boot_prompt = The default boot selection will start in
-
-interrupt_boot_command = break
-
-# UEFI boot commands
-boot_cmds = sendline a,
-           expect Choice:,
-           sendline 1,
-           expect Select the Boot Device:,
-           sendline 2,
-           expect File path of the EFI Application or the kernel:,
-           sendline uImage,
-           expect [a/g/l],
-           sendline l,
-           expect Add an initrd: [y/n],
-           sendline y,
-           expect File path of the initrd:,
-           sendline uInitrd,
-           expect Arguments to pass to the binary:,
-           sendline 'console=ttyAMA0,38400n8 root=/dev/mmcblk0p2 rootwait ro mem=1024M',
-           expect File path of the local FDT:,
-           sendline rtsm\\rtsm_ve-ca15x1-ca7x1.dtb,
-           expect Description for this new Entry:,
-           sendline Test Image,
-           expect Choice:,
-           sendline 5,
-           expect Start:,
-           sendline 2
-
-simulator_axf_files =
-    img.axf
-    linux-system-ISW.axf
-    linux-system-semi.axf
-
-simulator_kernel_files =
-    uImage
-    vmlinuz.*
-
-simulator_initrd_files =
-    uInitrd
-    initrd.*
-
-simulator_dtb = rtsm_ve-ca15x1-ca7x1.dtb
-simulator_uefi = uefi_rtsm_ve-ca15.bin
-
-license_file = 8224@localhost
-sim_bin = /opt/arm/RTSM_A15-A7x14_VE/Linux64_RTSM_VE_Cortex-A15x1-A7x1/RTSM_VE_Cortex-A15x1-A7x1
-android_adb_port = 6555
-
-simulator_version_command = %(sim_bin)s --version | grep "Fast Models" | sed 's/Fast Models \[//' | sed 's/\]//'
-
-simulator_boot_wrapper = -a coretile.cluster0.*={AXF}
-
-simulator_command = sudo -u www-data ARMLMD_LICENSE_FILE="%(license_file)s" %(sim_bin)s
-
-boot_options =
-        motherboard.mmc.p_mmc_file
-	motherboard.hostbridge.userNetPorts
-	motherboard.smsc_91c111.enabled
-	motherboard.hostbridge.userNetworking
-        motherboard.flashloader0.fname
-        motherboard.flashloader1.fname
-        motherboard.flashloader1.fnameWrite
-	coretile.cache_state_modelled
-	coretile.cluster0.cpu0.semihosting-enable
-	coretile.cluster0.cpu0.semihosting-cmd_line
-
-[motherboard.mmc.p_mmc_file]
-default = {IMG}
-
-[motherboard.hostbridge.userNetPorts]
-default="%(android_adb_port)s=%(android_adb_port)s"
-
-[motherboard.smsc_91c111.enabled]
-default = 1
-allowed = 0,1
-
-[motherboard.hostbridge.userNetworking]
-default = 1
-allowed = 0,1
-
-[motherboard.flashloader0.fname]
-default = {UEFI}
-
-[motherboard.flashloader1.fname]
-default = uefi-vars.fd
-
-[motherboard.flashloader1.fnameWrite]
-default = uefi-vars.fd
-
-[coretile.cache_state_modelled]
-default = 0
-allowed = 0,1
-
-[coretile.cluster0.cpu0.semihosting-enable]
-default = 1
-allowed = 0,1
-
-[coretile.cluster0.cpu0.semihosting-cmd_line]
-default = "--kernel {KERNEL} --dtb {DTB} --initrd {INITRD} -- console=ttyAMA0,38400n8  root=/dev/mmcblk0p2  rootwait ro mem=1024M"

=== removed file 'lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x4-a7x4.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x4-a7x4.conf	2013-06-28 10:01:48 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x4-a7x4.conf	1970-01-01 00:00:00 +0000
@@ -1,117 +0,0 @@ 
-client_type=fastmodel
-
-# how long the disablesuspend script should take to complete
-# fm takes longer than other android images do
-disablesuspend_timeout = 500
-
-# how long ubuntu takes to boot to prompt
-boot_linaro_timeout = 800
-
-# if you do dhcp on boot, adb will not work (asac) on fastmodels
-enable_network_after_boot_android = 0
-
-# we do usermode networking over the loopback
-default_network_interface = lo
-
-bootloader_prompt = Start:
-
-interrupt_boot_prompt = The default boot selection will start in
-
-interrupt_boot_command = break
-
-# UEFI boot commands
-boot_cmds = sendline a,
-           expect Choice:,
-           sendline 1,
-           expect Select the Boot Device:,
-           sendline 2,
-           expect File path of the EFI Application or the kernel:,
-           sendline uImage,
-           expect [a/g/l],
-           sendline l,
-           expect Add an initrd: [y/n],
-           sendline y,
-           expect File path of the initrd:,
-           sendline uInitrd,
-           expect Arguments to pass to the binary:,
-           sendline 'console=ttyAMA0,38400n8 root=/dev/mmcblk0p2 rootwait ro mem=1024M',
-           expect File path of the local FDT:,
-           sendline rtsm\\rtsm_ve-ca15x4-ca7x4.dtb,
-           expect Description for this new Entry:,
-           sendline Test Image,
-           expect Choice:,
-           sendline 5,
-           expect Start:,
-           sendline 2
-
-simulator_axf_files =
-    img.axf
-    linux-system-ISW.axf
-    linux-system-semi.axf
-
-simulator_kernel_files =
-    uImage
-    vmlinuz.*
-
-simulator_initrd_files =
-    uInitrd
-    initrd.*
-
-simulator_dtb = rtsm_ve-ca15x4-ca7x4.dtb
-simulator_uefi = uefi_rtsm_ve-ca15.bin
-
-license_file = 8224@localhost
-sim_bin = /opt/arm/RTSM_A15-A7x14_VE/Linux64_RTSM_VE_Cortex-A15x4-A7x4/RTSM_VE_Cortex-A15x4-A7x4
-android_adb_port = 6555
-
-simulator_version_command = %(sim_bin)s --version | grep "Fast Models" | sed 's/Fast Models \[//' | sed 's/\]//'
-
-simulator_boot_wrapper = -a coretile.cluster0.*={AXF}
-
-simulator_command = sudo -u www-data ARMLMD_LICENSE_FILE="%(license_file)s" %(sim_bin)s
-
-boot_options =
-        motherboard.mmc.p_mmc_file
-	motherboard.hostbridge.userNetPorts
-	motherboard.smsc_91c111.enabled
-	motherboard.hostbridge.userNetworking
-        motherboard.flashloader0.fname
-        motherboard.flashloader1.fname
-        motherboard.flashloader1.fnameWrite
-	coretile.cache_state_modelled
-	coretile.cluster0.cpu0.semihosting-enable
-	coretile.cluster0.cpu0.semihosting-cmd_line
-
-[motherboard.mmc.p_mmc_file]
-default = {IMG}
-
-[motherboard.hostbridge.userNetPorts]
-default="%(android_adb_port)s=%(android_adb_port)s"
-
-[motherboard.smsc_91c111.enabled]
-default = 1
-allowed = 0,1
-
-[motherboard.hostbridge.userNetworking]
-default = 1
-allowed = 0,1
-
-[motherboard.flashloader0.fname]
-default = {UEFI}
-
-[motherboard.flashloader1.fname]
-default = uefi-vars.fd
-
-[motherboard.flashloader1.fnameWrite]
-default = uefi-vars.fd
-
-[coretile.cache_state_modelled]
-default = 0
-allowed = 0,1
-
-[coretile.cluster0.cpu0.semihosting-enable]
-default = 1
-allowed = 0,1
-
-[coretile.cluster0.cpu0.semihosting-cmd_line]
-default = "--kernel {KERNEL} --dtb {DTB} --initrd {INITRD} -- console=ttyAMA0,38400n8  root=/dev/mmcblk0p2  rootwait ro mem=1024M"

=== added file 'lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x4-a7x4.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x4-a7x4.conf	1970-01-01 00:00:00 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-a15x4-a7x4.conf	2013-07-03 10:11:50 +0000
@@ -0,0 +1,117 @@ 
+client_type=fastmodel
+
+# how long the disablesuspend script should take to complete
+# fm takes longer than other android images do
+disablesuspend_timeout = 500
+
+# how long ubuntu takes to boot to prompt
+boot_linaro_timeout = 800
+
+# if you do dhcp on boot, adb will not work (asac) on fastmodels
+enable_network_after_boot_android = 0
+
+# we do usermode networking over the loopback
+default_network_interface = lo
+
+bootloader_prompt = Start:
+
+interrupt_boot_prompt = The default boot selection will start in
+
+interrupt_boot_command = break
+
+# UEFI boot commands
+boot_cmds = sendline a,
+           expect Choice:,
+           sendline 1,
+           expect Select the Boot Device:,
+           sendline 2,
+           expect File path of the EFI Application or the kernel:,
+           sendline uImage,
+           expect [a/g/l],
+           sendline l,
+           expect Add an initrd: [y/n],
+           sendline y,
+           expect File path of the initrd:,
+           sendline uInitrd,
+           expect Arguments to pass to the binary:,
+           sendline 'console=ttyAMA0,38400n8 root=/dev/mmcblk0p2 rootwait ro mem=1024M',
+           expect File path of the local FDT:,
+           sendline rtsm\\rtsm_ve-ca15x4-ca7x4.dtb,
+           expect Description for this new Entry:,
+           sendline Test Image,
+           expect Choice:,
+           sendline 5,
+           expect Start:,
+           sendline 2
+
+simulator_axf_files =
+    img.axf
+    linux-system-ISW.axf
+    linux-system-semi.axf
+
+simulator_kernel_files =
+    uImage
+    vmlinuz.*
+
+simulator_initrd_files =
+    uInitrd
+    initrd.*
+
+simulator_dtb = rtsm_ve-ca15x4-ca7x4.dtb
+simulator_uefi = uefi_rtsm_ve-ca15.bin
+
+license_file = 8224@localhost
+sim_bin = /opt/arm/RTSM_A15-A7x14_VE/Linux64_RTSM_VE_Cortex-A15x4-A7x4/RTSM_VE_Cortex-A15x4-A7x4
+android_adb_port = 6555
+
+simulator_version_command = %(sim_bin)s --version | grep "Fast Models" | sed 's/Fast Models \[//' | sed 's/\]//'
+
+simulator_boot_wrapper = -a coretile.cluster0.*={AXF}
+
+simulator_command = sudo -u www-data ARMLMD_LICENSE_FILE="%(license_file)s" %(sim_bin)s
+
+boot_options =
+        motherboard.mmc.p_mmc_file
+	motherboard.hostbridge.userNetPorts
+	motherboard.smsc_91c111.enabled
+	motherboard.hostbridge.userNetworking
+        motherboard.flashloader0.fname
+        motherboard.flashloader1.fname
+        motherboard.flashloader1.fnameWrite
+	coretile.cache_state_modelled
+	coretile.cluster0.cpu0.semihosting-enable
+	coretile.cluster0.cpu0.semihosting-cmd_line
+
+[motherboard.mmc.p_mmc_file]
+default = {IMG}
+
+[motherboard.hostbridge.userNetPorts]
+default="%(android_adb_port)s=%(android_adb_port)s"
+
+[motherboard.smsc_91c111.enabled]
+default = 1
+allowed = 0,1
+
+[motherboard.hostbridge.userNetworking]
+default = 1
+allowed = 0,1
+
+[motherboard.flashloader0.fname]
+default = {UEFI}
+
+[motherboard.flashloader1.fname]
+default = uefi-vars.fd
+
+[motherboard.flashloader1.fnameWrite]
+default = uefi-vars.fd
+
+[coretile.cache_state_modelled]
+default = 0
+allowed = 0,1
+
+[coretile.cluster0.cpu0.semihosting-enable]
+default = 1
+allowed = 0,1
+
+[coretile.cluster0.cpu0.semihosting-cmd_line]
+default = "--kernel {KERNEL} --dtb {DTB} --initrd {INITRD} -- console=ttyAMA0,38400n8  root=/dev/mmcblk0p2  rootwait ro mem=1024M"

=== removed file 'lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-armv8.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-armv8.conf	2013-06-25 10:50:02 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-armv8.conf	1970-01-01 00:00:00 +0000
@@ -1,128 +0,0 @@ 
-client_type=fastmodel
-
-# how long the disablesuspend script should take to complete
-# fm takes longer than other android images do
-disablesuspend_timeout = 500
-
-# how long ubuntu takes to boot to prompt
-boot_linaro_timeout = 500
-
-#after enabled the network, we can set it to true
-enable_network_after_boot_android = 1
-
-# change to use eth0 after we enabled the network
-default_network_interface = eth0
-
-bootloader_prompt = Start:
-
-interrupt_boot_prompt = The default boot selection will start in
-
-interrupt_boot_command = break
-
-# UEFI boot commands
-boot_cmds = sendline a,
-           expect Choice:,
-           sendline 1,
-           expect Select the Boot Device:,
-           sendline 2,
-           expect File path of the EFI Application or the kernel:,
-           sendline uImage,
-           expect [a/g/l],
-           sendline l,
-           expect Add an initrd: [y/n],
-           sendline y,
-           expect File path of the initrd:,
-           sendline uInitrd,
-           expect Arguments to pass to the binary:,
-           sendline 'console=ttyAMA0,38400n8 root=/dev/mmcblk0p2 rootwait ro mem=1024M',
-           expect File path of the local FDT:,
-           sendline rtsm\\rtsm_ve-ca15x1-ca7x1.dtb,
-           expect Description for this new Entry:,
-           sendline Test Image,
-           expect Choice:,
-           sendline 5,
-           expect Start:,
-           sendline 2
-
-simulator_axf_files = linux-system.axf
-
-license_file = 8224@localhost
-sim_bin = /opt/arm/RTSMv8_VE/bin/model_shell64
-sim_model = /opt/arm/RTSMv8_VE/models/Linux64_GCC-4.1/RTSM_VE_AEMv8A.so
-android_adb_port = 5555
-interfaceName = armv8_01
-
-simulator_version_command = %(sim_bin)s --version | grep "Model Shell" | sed 's/Model Shell //'
-
-simulator_boot_wrapper = -a {AXF}
-
-simulator_command = sudo -u www-data ARMLMD_LICENSE_FILE="%(license_file)s" %(sim_bin)s %(sim_model)s
-
-boot_options =
-        motherboard.mmc.p_mmc_file
-	motherboard.smsc_91c111.enabled
-	cluster.NUM_CORES
-	cluster.cpu0.unpredictable_WPMASKANDBAS
-	cluster.cpu0.unpredictable_non-contigous_BAS
-	cluster.cpu1.unpredictable_WPMASKANDBAS
-	cluster.cpu1.unpredictable_non-contigous_BAS
-	cluster.cpu2.unpredictable_WPMASKANDBAS
-	cluster.cpu2.unpredictable_non-contigous_BAS
-	cluster.cpu3.unpredictable_WPMASKANDBAS
-	cluster.cpu3.unpredictable_non-contigous_BAS
-	cluster.take_ccfail_undef
-	motherboard.hostbridge.interfaceName
-	motherboard.smsc_91c111.mac_address
-
-[motherboard.smsc_91c111.mac_address]
-default="auto"
-
-[motherboard.hostbridge.interfaceName]
-default="%(interfaceName)s"
-
-[motherboard.mmc.p_mmc_file]
-default = {IMG}
-
-[motherboard.smsc_91c111.enabled]
-default = 1
-allowed = 0,1
-
-[cluster.NUM_CORES]
-default = 1
-allowed = 0,1
-
-[cluster.cpu0.unpredictable_WPMASKANDBAS]
-default = 0
-allowed = 0,1
-
-[cluster.cpu0.unpredictable_non-contigous_BAS]
-default = 0
-allowed = 0,1
-
-[cluster.cpu1.unpredictable_WPMASKANDBAS]
-default = 0
-allowed = 0,1
-
-[cluster.cpu1.unpredictable_non-contigous_BAS]
-default = 0
-allowed = 0,1
-
-[cluster.cpu2.unpredictable_WPMASKANDBAS]
-default = 0
-allowed = 0,1
-
-[cluster.cpu2.unpredictable_non-contigous_BAS]
-default = 0
-allowed = 0,1
-
-[cluster.cpu3.unpredictable_WPMASKANDBAS]
-default = 0
-allowed = 0,1
-
-[cluster.cpu3.unpredictable_non-contigous_BAS]
-default = 0
-allowed = 0,1
-
-[cluster.take_ccfail_undef]
-default = 0
-allowed = 0,1

=== added file 'lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-armv8.conf'
--- lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-armv8.conf	1970-01-01 00:00:00 +0000
+++ lava_dispatcher/default-config/lava-dispatcher/device-types/rtsm_ve-armv8.conf	2013-07-02 15:12:52 +0000
@@ -0,0 +1,128 @@ 
+client_type=fastmodel
+
+# how long the disablesuspend script should take to complete
+# fm takes longer than other android images do
+disablesuspend_timeout = 500
+
+# how long ubuntu takes to boot to prompt
+boot_linaro_timeout = 500
+
+#after enabled the network, we can set it to true
+enable_network_after_boot_android = 1
+
+# change to use eth0 after we enabled the network
+default_network_interface = eth0
+
+bootloader_prompt = Start:
+
+interrupt_boot_prompt = The default boot selection will start in
+
+interrupt_boot_command = break
+
+# UEFI boot commands
+boot_cmds = sendline a,
+           expect Choice:,
+           sendline 1,
+           expect Select the Boot Device:,
+           sendline 2,
+           expect File path of the EFI Application or the kernel:,
+           sendline uImage,
+           expect [a/g/l],
+           sendline l,
+           expect Add an initrd: [y/n],
+           sendline y,
+           expect File path of the initrd:,
+           sendline uInitrd,
+           expect Arguments to pass to the binary:,
+           sendline 'console=ttyAMA0,38400n8 root=/dev/mmcblk0p2 rootwait ro mem=1024M',
+           expect File path of the local FDT:,
+           sendline rtsm\\rtsm_ve-ca15x1-ca7x1.dtb,
+           expect Description for this new Entry:,
+           sendline Test Image,
+           expect Choice:,
+           sendline 5,
+           expect Start:,
+           sendline 2
+
+simulator_axf_files = linux-system.axf
+
+license_file = 8224@localhost
+sim_bin = /opt/arm/RTSMv8_VE/bin/model_shell64
+sim_model = /opt/arm/RTSMv8_VE/models/Linux64_GCC-4.1/RTSM_VE_AEMv8A.so
+android_adb_port = 5555
+interfaceName = armv8_01
+
+simulator_version_command = %(sim_bin)s --version | grep "Model Shell" | sed 's/Model Shell //'
+
+simulator_boot_wrapper = -a {AXF}
+
+simulator_command = sudo -u www-data ARMLMD_LICENSE_FILE="%(license_file)s" %(sim_bin)s %(sim_model)s
+
+boot_options =
+        motherboard.mmc.p_mmc_file
+	motherboard.smsc_91c111.enabled
+	cluster.NUM_CORES
+	cluster.cpu0.unpredictable_WPMASKANDBAS
+	cluster.cpu0.unpredictable_non-contigous_BAS
+	cluster.cpu1.unpredictable_WPMASKANDBAS
+	cluster.cpu1.unpredictable_non-contigous_BAS
+	cluster.cpu2.unpredictable_WPMASKANDBAS
+	cluster.cpu2.unpredictable_non-contigous_BAS
+	cluster.cpu3.unpredictable_WPMASKANDBAS
+	cluster.cpu3.unpredictable_non-contigous_BAS
+	cluster.take_ccfail_undef
+	motherboard.hostbridge.interfaceName
+	motherboard.smsc_91c111.mac_address
+
+[motherboard.smsc_91c111.mac_address]
+default="auto"
+
+[motherboard.hostbridge.interfaceName]
+default="%(interfaceName)s"
+
+[motherboard.mmc.p_mmc_file]
+default = {IMG}
+
+[motherboard.smsc_91c111.enabled]
+default = 1
+allowed = 0,1
+
+[cluster.NUM_CORES]
+default = 1
+allowed = 0,1
+
+[cluster.cpu0.unpredictable_WPMASKANDBAS]
+default = 0
+allowed = 0,1
+
+[cluster.cpu0.unpredictable_non-contigous_BAS]
+default = 0
+allowed = 0,1
+
+[cluster.cpu1.unpredictable_WPMASKANDBAS]
+default = 0
+allowed = 0,1
+
+[cluster.cpu1.unpredictable_non-contigous_BAS]
+default = 0
+allowed = 0,1
+
+[cluster.cpu2.unpredictable_WPMASKANDBAS]
+default = 0
+allowed = 0,1
+
+[cluster.cpu2.unpredictable_non-contigous_BAS]
+default = 0
+allowed = 0,1
+
+[cluster.cpu3.unpredictable_WPMASKANDBAS]
+default = 0
+allowed = 0,1
+
+[cluster.cpu3.unpredictable_non-contigous_BAS]
+default = 0
+allowed = 0,1
+
+[cluster.take_ccfail_undef]
+default = 0
+allowed = 0,1

=== modified file 'lava_dispatcher/device/master.py'
--- lava_dispatcher/device/master.py	2013-08-22 22:08:15 +0000
+++ lava_dispatcher/device/master.py	2013-08-28 14:55:50 +0000
@@ -245,10 +245,10 @@ 
     def _format_testpartition(self, runner, fstype):
         logging.info("Format testboot and testrootfs partitions")
         runner.run('umount /dev/disk/by-label/testrootfs', failok=True)
-        runner.run('mkfs -t %s -q /dev/disk/by-label/testrootfs -L testrootfs'
+        runner.run('nice mkfs -t %s -q /dev/disk/by-label/testrootfs -L testrootfs'
                    % fstype, timeout=1800)
         runner.run('umount /dev/disk/by-label/testboot', failok=True)
-        runner.run('mkfs.vfat /dev/disk/by-label/testboot -n testboot')
+        runner.run('nice mkfs.vfat /dev/disk/by-label/testboot -n testboot')
 
     def _generate_tarballs(self, image_file):
         self._customize_linux(image_file)
@@ -335,7 +335,7 @@ 
 
                 parent_dir, target_name = os.path.split(targetdir)
 
-                runner.run('tar -czf /tmp/fs.tgz -C %s %s' %
+                runner.run('nice tar -czf /tmp/fs.tgz -C %s %s' %
                            (parent_dir, target_name))
                 runner.run('cd /tmp')  # need to be in same dir as fs.tgz
                 self.proc.sendline('python -m SimpleHTTPServer 0 2>/dev/null')
@@ -355,7 +355,7 @@ 
                 tfdir = os.path.join(self.scratch_dir, str(time.time()))
                 try:
                     os.mkdir(tfdir)
-                    self.context.run_command('tar -C %s -xzf %s' % (tfdir, tf))
+                    self.context.run_command('nice tar -C %s -xzf %s' % (tfdir, tf))
                     yield os.path.join(tfdir, target_name)
 
                 finally:
@@ -387,7 +387,7 @@ 
                 runner.run('umount /mnt')
 
     def _wait_for_master_boot(self):
-        self.proc.expect(self.config.image_boot_msg, timeout=300)
+        self.proc.expect(self.config.image_boot_msg, timeout=30)
         self._wait_for_prompt(self.proc, self.config.master_str, timeout=300)
 
     def boot_master_image(self):
@@ -665,9 +665,9 @@ 
     session.run('mv /mnt/lava/boot/uInitrd ~/tmp')
     session.run('cd ~/tmp/')
 
-    session.run('dd if=uInitrd of=uInitrd.data ibs=64 skip=1')
+    session.run('nice dd if=uInitrd of=uInitrd.data ibs=64 skip=1')
     session.run('mv uInitrd.data ramdisk.cpio.gz')
-    session.run('gzip -d -f ramdisk.cpio.gz; cpio -i -F ramdisk.cpio')
+    session.run('nice gzip -d -f ramdisk.cpio.gz; cpio -i -F ramdisk.cpio')
 
     session.run(
         'sed -i "/export PATH/a \ \ \ \ export PS1 \'%s\'" init.rc' %
@@ -684,11 +684,11 @@ 
             _update_uInitrd_partitions(session, f)
             session.run("cat %s" % f, failok=True)
 
-    session.run('cpio -i -t -F ramdisk.cpio | cpio -o -H newc | \
+    session.run('nice cpio -i -t -F ramdisk.cpio | cpio -o -H newc | \
             gzip > ramdisk_new.cpio.gz')
 
     session.run(
-        'mkimage -A arm -O linux -T ramdisk -n "Android Ramdisk Image" \
+        'nice mkimage -A arm -O linux -T ramdisk -n "Android Ramdisk Image" \
             -d ramdisk_new.cpio.gz uInitrd')
 
     session.run('cd -')
@@ -745,7 +745,7 @@ 
 
 def _purge_linaro_android_sdcard(session):
     logging.info("Reformatting Linaro Android sdcard filesystem")
-    session.run('mkfs.vfat /dev/disk/by-label/sdcard -n sdcard')
+    session.run('nice mkfs.vfat /dev/disk/by-label/sdcard -n sdcard')
     session.run('udevadm trigger')
 
 
@@ -760,7 +760,7 @@ 
 def _deploy_linaro_android_data(session, datatbz2):
     data_label = _android_data_label(session)
     session.run('umount /dev/disk/by-label/%s' % data_label, failok=True)
-    session.run('mkfs.ext4 -q /dev/disk/by-label/%s -L %s' %
+    session.run('nice mkfs.ext4 -q /dev/disk/by-label/%s -L %s' %
                 (data_label, data_label))
     session.run('udevadm trigger')
     session.run('mkdir -p /mnt/lava/data')

=== modified file 'lava_dispatcher/downloader.py'
--- lava_dispatcher/downloader.py	2013-07-16 16:08:22 +0000
+++ lava_dispatcher/downloader.py	2013-07-18 14:10:57 +0000
@@ -41,7 +41,7 @@ 
     process = None
     try:
         process = subprocess.Popen(
-            ['ssh', url.netloc, 'cat', url.path],
+            ['nice', 'ssh', url.netloc, 'cat', url.path],
             shell=False,
             stdout=subprocess.PIPE
         )

=== modified file 'lava_dispatcher/job.py'
--- lava_dispatcher/job.py	2013-07-24 16:56:18 +0000
+++ lava_dispatcher/job.py	2013-08-28 14:55:50 +0000
@@ -23,7 +23,8 @@ 
 import pexpect
 import time
 import traceback
-
+import hashlib
+import simplejson
 from json_schema_validator.schema import Schema
 from json_schema_validator.validator import Validator
 
@@ -64,6 +65,34 @@ 
             'type': 'string',
             'optional': True,
         },
+        'device_group': {
+            'type': 'array',
+            'additionalProperties': False,
+            'optional': True,
+            'items': {
+                'type': 'object',
+                'properties': {
+                    'role': {
+                        'optional': False,
+                        'type': 'string',
+                    },
+                    'count': {
+                        'optional': False,
+                        'type': 'integer',
+                    },
+                    'device_type': {
+                        'optional': False,
+                        'type': 'string',
+                    },
+                    'tags': {
+                        'type': 'array',
+                        'uniqueItems': True,
+                        'items': {'type': 'string'},
+                        'optional': True,
+                    },
+                },
+            },
+        },
         'job_name': {
             'type': 'string',
             'optional': True,
@@ -76,6 +105,26 @@ 
             'type': 'string',
             'optional': True,
         },
+        'target_group': {
+            'type': 'string',
+            'optional': True,
+        },
+        'port': {
+            'type': 'integer',
+            'optional': True,
+        },
+        'hostname': {
+            'type': 'string',
+            'optional': True,
+        },
+        'role': {
+            'type': 'string',
+            'optional': True,
+        },
+        'group_size': {
+            'type': 'integer',
+            'optional': True,
+        },
         'timeout': {
             'type': 'integer',
             'optional': False,
@@ -136,7 +185,9 @@ 
         except:
             return None
 
-    def run(self):
+    def run(self, transport=None, group_data=None):
+        self.context.assign_transport(transport)
+        self.context.assign_group_data(group_data)
         validate_job_data(self.job_data)
         self._set_logging_level()
         lava_commands = get_all_cmds()
@@ -157,6 +208,31 @@ 
 
         self.context.test_data.add_tags(self.tags)
 
+        if 'target' in self.job_data:
+            metadata['target'] = self.job_data['target']
+            self.context.test_data.add_metadata(metadata)
+
+        if 'logging_level' in self.job_data:
+            metadata['logging_level'] = self.job_data['logging_level']
+            self.context.test_data.add_metadata(metadata)
+
+        if 'target_group' in self.job_data:
+            metadata['target_group'] = self.job_data['target_group']
+            self.context.test_data.add_metadata(metadata)
+
+            if 'role' in self.job_data:
+                metadata['role'] = self.job_data['role']
+                self.context.test_data.add_metadata(metadata)
+
+            if 'group_size' in self.job_data:
+                metadata['group_size'] = self.job_data['group_size']
+                self.context.test_data.add_metadata(metadata)
+
+            logging.info("[ACTION-B] Multi Node test!")
+            logging.info("[ACTION-B] target_group is (%s)." % self.context.test_data.metadata['target_group'])
+        else:
+            logging.info("[ACTION-B] Single node test!")
+
         try:
             job_length = len(self.job_data['actions'])
             job_num = 0
@@ -177,6 +253,7 @@ 
                     status = 'fail'
                     action.run(**params)
                 except ADBConnectError as err:
+                    logging.info("ADBConnectError")
                     if cmd.get('command') == 'boot_linaro_android_image':
                         logging.warning(('[ACTION-E] %s failed to create the'
                                          ' adb connection') % (cmd['command']))
@@ -195,6 +272,7 @@ 
                         ## mark it as pass if the second boot works
                         status = 'pass'
                 except TimeoutError as err:
+                    logging.info("TimeoutError")
                     if cmd.get('command').startswith('lava_android_test'):
                         logging.warning("[ACTION-E] %s times out." %
                                         (cmd['command']))
@@ -214,15 +292,23 @@ 
                             self.context.client.proc.sendline("")
                             time.sleep(5)
                             self.context.client.boot_linaro_android_image()
+                    else:
+                        logging.warn("Unhandled timeout condition")
+                        continue
                 except CriticalError as err:
+                    logging.info("CriticalError")
                     raise
                 except (pexpect.TIMEOUT, GeneralError) as err:
+                    logging.warn("pexpect timed out, pass with status %s" % status)
                     pass
                 except Exception as err:
+                    logging.info("General Exception")
                     raise
                 else:
+                    logging.info("setting status pass")
                     status = 'pass'
                 finally:
+                    logging.info("finally status %s" % status)
                     err_msg = ""
                     if status == 'fail':
                         # XXX mwhudson, 2013-01-17: I have no idea what this
@@ -255,7 +341,10 @@ 
             self.context.test_data.add_metadata({
                 'target.device_version': device_version
             })
-            if submit_results:
+            if 'target_group' in self.job_data:
+                # all nodes call aggregate, even if there is no submit_results command
+                self._aggregate_bundle(transport, lava_commands, submit_results)
+            elif submit_results:
                 params = submit_results.get('parameters', {})
                 action = lava_commands[submit_results['command']](
                     self.context)
@@ -270,6 +359,57 @@ 
                     raise
             self.context.finish()
 
+    def _aggregate_bundle(self, transport, lava_commands, submit_results):
+        if "sub_id" not in self.job_data:
+            raise ValueError("Invalid MultiNode JSON - missing sub_id")
+        # all nodes call aggregate, even if there is no submit_results command
+        base_msg = {
+            "request": "aggregate",
+            "bundle": None,
+            "sub_id": self.job_data['sub_id']
+        }
+        if not submit_results:
+            transport(json.dumps(base_msg))
+            return
+        # need to collate this bundle before submission, then send to the coordinator.
+        params = submit_results.get('parameters', {})
+        action = lava_commands[submit_results['command']](self.context)
+        token = None
+        group_name = self.job_data['target_group']
+        if 'token' in params:
+            token = params['token']
+        # the transport layer knows the client_name for this bundle.
+        bundle = action.collect_bundles(**params)
+        # catch parse errors in bundles
+        try:
+            bundle_str = simplejson.dumps(bundle)
+        except Exception as e:
+            logging.error("Unable to parse bundle '%s' - %s" % (bundle, e))
+            transport(json.dumps(base_msg))
+            return
+        sha1 = hashlib.sha1()
+        sha1.update(bundle_str)
+        base_msg['bundle'] = sha1.hexdigest()
+        reply = transport(json.dumps(base_msg))
+        # if this is sub_id zero, this will wait until the last call to aggregate
+        # and then the reply is the full list of bundle checksums.
+        if reply == "ack":
+            # coordinator has our checksum for this bundle, submit as pending to launch_control
+            action.submit_pending(bundle, params['server'], params['stream'], token, group_name)
+            logging.info("Result bundle %s has been submitted to Dashboard as pending." % base_msg['bundle'])
+            return
+        elif reply == "nack":
+            logging.error("Unable to submit result bundle checksum to coordinator")
+            return
+        else:
+            if self.job_data["sub_id"].endswith(".0"):
+                # submit this bundle, add it to the pending list which is indexed by group_name and post the set
+                logging.info("Submitting bundle '%s' and aggregating with pending group results." % base_msg['bundle'])
+                action.submit_group_list(bundle, params['server'], params['stream'], token, group_name)
+                return
+            else:
+                raise ValueError("API error - collated bundle has been sent to the wrong node.")
+
     def _set_logging_level(self):
         # set logging level is optional
         level = self.logging_level

=== modified file 'lava_dispatcher/signals/__init__.py'
--- lava_dispatcher/signals/__init__.py	2013-07-16 16:06:51 +0000
+++ lava_dispatcher/signals/__init__.py	2013-08-23 14:39:05 +0000
@@ -21,6 +21,7 @@ 
 import contextlib
 import logging
 import tempfile
+import json
 
 from lava_dispatcher.utils import rmtree
 
@@ -123,13 +124,25 @@ 
         pass
 
 
+class FailedCall(Exception):
+    """
+    Just need a plain Exception to trigger the failure of the
+    signal handler and set keep_running to False.
+    """
+
+    def __init__(self, call):
+        Exception.__init__(self, "%s call failed" % call)
+
+
 class SignalDirector(object):
 
-    def __init__(self, client, testdefs_by_uuid):
+    def __init__(self, client, testdefs_by_uuid, context):
         self.client = client
         self.testdefs_by_uuid = testdefs_by_uuid
         self._test_run_data = []
         self._cur_handler = None
+        self.context = context
+        self.connection = None
 
     def signal(self, name, params):
         handler = getattr(self, '_on_' + name, None)
@@ -141,6 +154,11 @@ 
                 handler(*params)
             except:
                 logging.exception("handling signal %s failed", name)
+                return False
+            return True
+
+    def set_connection(self, connection):
+        self.connection = connection
 
     def _on_STARTRUN(self, test_run_id, uuid):
         self._cur_handler = None
@@ -162,6 +180,75 @@ 
         if self._cur_handler:
             self._cur_handler.endtc(test_case_id)
 
+    def _on_SEND(self, *args):
+        arg_length = len(args)
+        if arg_length == 1:
+            msg = {"request": "lava_send", "messageID": args[0], "message": None}
+        else:
+            message_id = args[0]
+            remainder = args[1:arg_length]
+            logging.debug("%d key value pair(s) to be sent." % int(len(remainder)))
+            data = {}
+            for message in remainder:
+                detail = str.split(message, "=")
+                if len(detail) == 2:
+                    data[detail[0]] = detail[1]
+            msg = {"request": "lava_send", "messageID": message_id, "message": data}
+        logging.debug("Handling signal <LAVA_SEND %s>" % msg)
+        reply = self.context.transport(json.dumps(msg))
+        if reply == "nack":
+            raise FailedCall("LAVA_SEND nack")
+
+    def _on_SYNC(self, message_id):
+        if not self.connection:
+            logging.error("No connection available for on_SYNC")
+            return
+        logging.debug("Handling signal <LAVA_SYNC %s>" % message_id)
+        msg = {"request": "lava_sync", "messageID": message_id, "message": None}
+        reply = self.context.transport(json.dumps(msg))
+        message_str = ""
+        if reply == "nack":
+            message_str = " nack"
+        else:
+            message_str = ""
+        ret = self.connection.sendline("<LAVA_SYNC_COMPLETE%s>" % message_str)
+        logging.debug("runner._connection.sendline wrote %d bytes" % ret)
+
+    def _on_WAIT(self, message_id):
+        if not self.connection:
+            logging.error("No connection available for on_WAIT")
+            return
+        logging.debug("Handling signal <LAVA_WAIT %s>" % message_id)
+        msg = {"request": "lava_wait", "messageID": message_id, "message": None}
+        reply = self.context.transport(json.dumps(msg))
+        message_str = ""
+        if reply == "nack":
+            message_str = " nack"
+        else:
+            for target, messages in reply.items():
+                for key, value in messages.items():
+                    message_str += " %s:%s=%s" % (target, key, value)
+        self.connection.sendline("<LAVA_WAIT_COMPLETE%s>" % message_str)
+
+    def _on_WAIT_ALL(self, message_id, role=None):
+        if not self.connection:
+            logging.error("No connection available for on_WAIT_ALL")
+            return
+        logging.debug("Handling signal <LAVA_WAIT_ALL %s>" % message_id)
+        msg = {"request": "lava_wait_all", "messageID": message_id, "role": role}
+        reply = self.context.transport(json.dumps(msg))
+        message_str = ""
+        if reply == "nack":
+            message_str = " nack"
+        else:
+            #the reply format is like this :
+            #"{target:{key1:value, key2:value2, key3:value3},
+            #  target2:{key1:value, key2:value2, key3:value3}}"
+            for target, messages in reply.items():
+                for key, value in messages.items():
+                    message_str += " %s:%s=%s" % (target, key, value)
+        self.connection.sendline("<LAVA_WAIT_ALL_COMPLETE%s>" % message_str)
+
     def postprocess_bundle(self, bundle):
         for test_run in bundle['test_runs']:
             uuid = test_run['analyzer_assigned_uuid']

=== added directory 'lava_dispatcher/tests/test-config/bin'
=== removed directory 'lava_dispatcher/tests/test-config/bin'
=== removed file 'lava_dispatcher/tests/test-config/bin/fake-qemu'
--- lava_dispatcher/tests/test-config/bin/fake-qemu	2013-08-08 09:18:23 +0000
+++ lava_dispatcher/tests/test-config/bin/fake-qemu	1970-01-01 00:00:00 +0000
@@ -1,3 +0,0 @@ 
-#!/bin/sh
-
-echo 'QEMU emulator version 1.5.0 (Debian 1.5.0+dfsg-4), Copyright (c) 2003-2008 Fabrice Bellard'

=== added file 'lava_dispatcher/tests/test-config/bin/fake-qemu'
--- lava_dispatcher/tests/test-config/bin/fake-qemu	1970-01-01 00:00:00 +0000
+++ lava_dispatcher/tests/test-config/bin/fake-qemu	2013-08-12 09:34:03 +0000
@@ -0,0 +1,3 @@ 
+#!/bin/sh
+
+echo 'QEMU emulator version 1.5.0 (Debian 1.5.0+dfsg-4), Copyright (c) 2003-2008 Fabrice Bellard'

=== modified file 'lava_dispatcher/tests/test_device_version.py'
--- lava_dispatcher/tests/test_device_version.py	2013-08-08 09:18:23 +0000
+++ lava_dispatcher/tests/test_device_version.py	2013-08-28 14:55:50 +0000
@@ -18,7 +18,6 @@ 
 # along with this program; if not, see <http://www.gnu.org/licenses>.
 
 import re
-import lava_dispatcher.config
 from lava_dispatcher.tests.helper import LavaDispatcherTestCase, create_device_config, create_config
 import os
 
@@ -28,6 +27,7 @@ 
 from lava_dispatcher.context import LavaContext
 from lava_dispatcher.config import get_config
 
+
 def _create_fastmodel_target():
     config = create_device_config('fastmodel01', {'device_type': 'fastmodel',
                                                   'simulator_binary': '/path/to/fastmodel',
@@ -57,6 +57,6 @@ 
 
     def test_qemu(self):
         fake_qemu = os.path.join(os.path.dirname(__file__), 'test-config', 'bin', 'fake-qemu')
-        target = _create_qemu_target({ 'qemu_binary': fake_qemu })
+        target = _create_qemu_target({'qemu_binary': fake_qemu})
         device_version = target.get_device_version()
         assert(re.search('^[0-9.]+', device_version))

=== modified file 'lava_dispatcher/utils.py'
--- lava_dispatcher/utils.py	2013-07-24 16:56:18 +0000
+++ lava_dispatcher/utils.py	2013-08-28 14:55:50 +0000
@@ -78,7 +78,7 @@ 
     """
     cmd = 'tar -C %s -czf %s %s' % (rootdir, tfname, basedir)
     if asroot:
-        cmd = 'sudo %s' % cmd
+        cmd = 'nice sudo %s' % cmd
     if logging_system(cmd):
         raise CriticalError('Unable to make tarball of: %s' % rootdir)
 
@@ -99,7 +99,7 @@ 
     a list of all the files (full path). This is being used to get around
     issues that python's tarfile seems to have with unicode
     """
-    if logging_system('tar -C %s -xzf %s' % (tmpdir, tfname)):
+    if logging_system('nice tar -C %s -xzf %s' % (tmpdir, tfname)):
         raise CriticalError('Unable to extract tarball: %s' % tfname)
 
     return _list_files(tmpdir)

=== added directory 'lava_test_shell/multi_node'
=== added file 'lava_test_shell/multi_node/lava-group'
--- lava_test_shell/multi_node/lava-group	1970-01-01 00:00:00 +0000
+++ lava_test_shell/multi_node/lava-group	2013-08-26 08:33:13 +0000
@@ -0,0 +1,19 @@ 
+#!/bin/sh
+#
+#This file is for Multi-Node test
+#
+#This command will produce in its standard output a representation of the
+#device group that is participating in the multi-node test job.
+#
+#Usage: ``lava-group``
+#
+#The output format contains one line per device, and each line contains
+#the hostname and the role that device is playing in the test, separated
+#by a TAB character::
+#
+#	panda01	client
+#	highbank01	loadbalancer
+#	highbank02	backend
+#	highbank03	backend
+
+printf ${LAVA_GROUP}

=== added file 'lava_test_shell/multi_node/lava-multi-node.lib'
--- lava_test_shell/multi_node/lava-multi-node.lib	1970-01-01 00:00:00 +0000
+++ lava_test_shell/multi_node/lava-multi-node.lib	2013-08-26 16:30:25 +0000
@@ -0,0 +1,210 @@ 
+#!/bin/sh
+#
+#This file is for Multi-Node test
+#
+
+MESSAGE_PREFIX="<LAVA_MULTI_NODE>"
+MESSAGE_COMMAND="<${LAVA_MULTI_NODE_API}"
+MESSAGE_HEAD="$MESSAGE_PREFIX $MESSAGE_COMMAND"
+#MESSAGE_ID="<$1>"
+MESSAGE_ACK="<${LAVA_MULTI_NODE_API}_ACK>"
+
+MESSAGE_REPLY="<${LAVA_MULTI_NODE_API}_COMPLETE"
+MESSAGE_REPLY_ACK="<${LAVA_MULTI_NODE_API}_COMPLETE_ACK>"
+
+LAVA_MULTI_NODE_EXIT_ERROR=1
+
+_get_key_value_pattern () {
+	echo $@|\
+	tr ' ' '\n' |\
+	sed -n '/\b\w\w*[=]\w\w*\b/p'|\
+	tr '\n' ' '
+}
+
+_lava_multi_node_debug () {
+
+if [ -n "$LAVA_MULTI_NODE_DEBUG" ] ; then
+	echo "${MESSAGE_COMMAND}_DEBUG $@ $(date)>"
+fi
+
+}
+
+_lava_multi_node_send () {
+
+_lava_multi_node_debug "$FUNCNAME started"
+
+result=$(echo $1 | grep "..*=..*")
+
+if [ -n "$1" -a "${result}x" = "x" ] ; then
+	echo ${MESSAGE_HEAD} $@">"
+else
+	_lava_multi_node_debug "$FUNCNAME error messageID : " "$result"
+	exit $LAVA_MULTI_NODE_EXIT_ERROR
+fi
+
+_lava_multi_node_debug "$FUNCNAME finished"
+
+}
+
+_lava_multi_node_process_message () {
+
+_lava_multi_node_debug "$FUNCNAME save message to $LAVA_MULTI_NODE_CACHE"
+#clean old cache file
+rm $LAVA_MULTI_NODE_CACHE 2>/dev/null
+
+until [ -z "$1" ] ; do
+	result=$(echo $1 | grep "..*=..*")
+	if [ "${result}x" != "x" ] ; then
+		echo $1 >> $LAVA_MULTI_NODE_CACHE
+	elif [ "${1}x" = "nackx" ] ; then
+		echo "Error:no-response $1, Exit from $LAVA_MULTI_NODE_API!"
+		exit $LAVA_MULTI_NODE_EXIT_ERROR
+	else
+		echo "Warning:unrecognized message $1"
+	fi
+	shift
+done
+}
+
+lava_multi_node_send () {
+
+_lava_multi_node_debug "$FUNCNAME preparing"
+
+_lava_multi_node_send $@
+
+while [ -n "$MESSAGE_NEED_ACK" -a "${SHELL}x" = "/bin/bashx" ] ; do
+_lava_multi_node_debug "$FUNCNAME waiting for ack"
+	read -t $MESSAGE_TIMEOUT line
+	result=$(echo $line | grep "${MESSAGE_ACK}")
+	if [ "${result}x" != "x" ] ; then
+#		echo ${MESSAGE_ACK}
+		break
+	fi
+	_lava_multi_node_send $@
+done
+
+_lava_multi_node_debug "$FUNCNAME finished"
+
+}
+
+lava_multi_node_wait_for_signal () {
+
+_lava_multi_node_debug "$FUNCNAME starting to wait"
+
+while read line; do
+	result=$(echo $line | grep "${MESSAGE_REPLY}>")
+	if [ "${result}x" != "x" ] ; then
+		if [ -n "$MESSAGE_NEED_ACK" ] ; then
+			echo ${MESSAGE_REPLY_ACK}
+		fi
+		break
+	fi
+done
+
+_lava_multi_node_debug "$FUNCNAME waiting over"
+
+}
+
+lava_multi_node_wait_for_message () {
+
+_lava_multi_node_debug "$FUNCNAME starting to wait"
+
+if [ -n "$1" ] ; then
+	export LAVA_MULTI_NODE_CACHE=$1
+fi
+
+while read line; do
+	result=$(echo $line | grep "${MESSAGE_REPLY}")
+	if [ "${result}x" != "x" ] ; then
+		line=${line##*${MESSAGE_REPLY}}
+		_lava_multi_node_process_message ${line%%>*}
+		if [ -n "$MESSAGE_NEED_ACK" ] ; then
+			echo ${MESSAGE_REPLY_ACK}
+		fi
+		break
+	fi
+done
+
+_lava_multi_node_debug "$FUNCNAME waiting over"
+
+}
+
+lava_multi_node_get_network_info () {
+
+_NETWORK_INTERFACE=$1
+_RAW_STREAM_V4=`ifconfig $_NETWORK_INTERFACE |grep "inet "`
+_RAW_STREAM_V6=`ifconfig $_NETWORK_INTERFACE |grep "inet6 "`
+_RAW_STREAM_MAC=`ifconfig $_NETWORK_INTERFACE |grep "ether "`
+
+_IPV4_STREAM_IP=`echo $_RAW_STREAM_V4 | cut -f2 -d" "`
+_IPV4_STREAM_NM=`echo $_RAW_STREAM_V4 | cut -f4 -d" "`
+_IPV4_STREAM_BC=`echo $_RAW_STREAM_V4 | cut -f6 -d" "`
+_IPV4_STREAM="ipv4="$_IPV4_STREAM_IP" netmask="$_IPV4_STREAM_NM" \
+broadcast="$_IPV4_STREAM_BC
+
+_IPV6_STREAM_IP=`echo $_RAW_STREAM_V6 | cut -f2 -d" "`
+_IPV6_STREAM="ipv6="$_IPV6_STREAM_IP
+
+_MAC_STREAM="mac="`echo $_RAW_STREAM_MAC | cut -f2 -d" "`
+
+_HOSTNAME_STREAM="hostname="`hostname`
+
+_HOSTNAME_FULL_STREAM="hostname-full="`hostname -f`
+
+_DEF_GATEWAY_STREAM="default-gateway="`route -n |grep "UG "|  cut -f10 -d" "`
+
+#get DNS configure
+_Counter=1
+for line in `cat /etc/resolv.conf | grep "nameserver"| cut -d " " -f 2` ; do
+	export _DNS_${_Counter}_STREAM=$line
+	_Counter=`expr ${_Counter} + 1`
+done
+_DNS_STREAM="dns_1=${_DNS_1_STREAM} dns_2=${_DNS_2_STREAM} \
+dns_3=${_DNS_3_STREAM}"
+
+_get_key_value_pattern $_IPV4_STREAM $_IPV6_STREAM $_MAC_STREAM \
+$_HOSTNAME_STREAM $_HOSTNAME_FULL_STREAM $_DEF_GATEWAY_STREAM $_DNS_STREAM
+
+}
+
+lava_multi_node_check_cache () {
+
+if [ -n "$1" ] ; then
+	export LAVA_MULTI_NODE_CACHE=$1
+fi
+
+if [ ! -f $LAVA_MULTI_NODE_CACHE ] ; then
+	_lava_multi_node_debug "$FUNCNAME not cache file $LAVA_MULTI_NODE_CACHE !"
+	exit $LAVA_MULTI_NODE_EXIT_ERROR
+fi
+
+}
+
+lava_multi_node_print_host_info () {
+
+_HOSTNAME=$1
+_INFO=$2
+_RAW_STREAM=`cat $LAVA_MULTI_NODE_NETWORK_CACHE |grep "$_HOSTNAME:$_INFO="`
+
+if [ -n "$_RAW_STREAM" ] ; then
+	echo $_RAW_STREAM|cut -d'=' -f2
+fi
+
+}
+
+lava_multi_node_make_hosts () {
+
+for line in `grep ":ipv4" $LAVA_MULTI_NODE_NETWORK_CACHE` ; do
+	_IP_STREAM=`echo $line | cut -d'=' -f2`
+	_TARGET_STREAM=`echo $line | cut -d':' -f1`
+	_HOSTNAME_STREAM=`grep "$_TARGET_STREAM:hostname=" \
+$LAVA_MULTI_NODE_NETWORK_CACHE | cut -d'=' -f2`
+	if [ -n "$_HOSTNAME_STREAM" ]; then
+		printf "$_IP_STREAM\t$_HOSTNAME_STREAM\n" >> $1
+	else
+		printf "$_IP_STREAM\t$_TARGET_STREAM\n" >> $1
+	fi
+done
+
+}
+

=== added file 'lava_test_shell/multi_node/lava-network'
--- lava_test_shell/multi_node/lava-network	1970-01-01 00:00:00 +0000
+++ lava_test_shell/multi_node/lava-network	2013-08-26 08:33:13 +0000
@@ -0,0 +1,104 @@ 
+#!/bin/sh
+#
+#This file is for Multi-Node test
+#lava-network
+#-----------------
+#Helper script to broadcast IP data from the test image, wait for data
+#to be received by the rest of the group (or one role within the group)
+#and then provide an interface to retrieve IP data about the group on
+#the command line.
+#
+#Raising a suitable network interface is a job left for the designer of
+#the test definition / image but once a network interface is available,
+#lava-network can be asked to broadcast this information to the rest of
+#the group. At a later stage of the test, before the IP details of the
+#group need to be used, call lava-network collect to receive the same
+#information about the rest of the group.
+#
+#All usage of lava-network needs to use a broadcast (which wraps a call
+#to lava-send) and a collect (which wraps a call to lava-wait-all). As
+#a wrapper around lava-wait-all, collect will block until the rest of
+#the group (or devices in the group with the specified role) has made a
+#broadcast.
+#
+#After the data has been collected, it can be queried for any board
+#specified in the output of lava-group:
+#
+#lava-network query server
+#192.168.3.56
+#
+#Usage:
+#	broadcast network info:
+#		lava-network broadcast [interface]
+#	collect network info:
+#		lava-network collect [interface] <role>
+#	query specific host info:
+#		lava-network query [hostname] [info]
+#	export hosts file:
+#		lava-network hosts [path of hosts]
+#
+#So interface would be mandatory for broadcast and collect, hostname
+#would be mandatory for query, "path of hosts" would be mandatory for
+#hosts, role is optional for collect.
+
+
+LAVA_MULTI_NODE_API="LAVA_NETWORK"
+#MESSAGE_TIMEOUT=5
+#MESSAGE_NEED_ACK=yes
+
+_LAVA_NETWORK_ID="network_info"
+_LAVA_NETWORK_ARG_MIN=2
+
+. $LAVA_TEST_BIN/lava-multi-node.lib
+
+LAVA_MULTI_NODE_NETWORK_CACHE="/tmp/lava_multi_node_network_cache.txt"
+
+_lava_multi_node_debug "$LAVA_MULTI_NODE_API checking arguments..."
+if [ $# -lt $_LAVA_NETWORK_ARG_MIN ]; then
+	_lava_multi_node_debug "$FUNCNAME Not enough arguments."
+	exit $LAVA_MULTI_NODE_EXIT_ERROR
+fi
+
+_lava_multi_node_debug "$LAVA_MULTI_NODE_API handle sub-command..."
+case "$1" in
+	"broadcast")
+	_lava_multi_node_debug "$LAVA_MULTI_NODE_API handle broadcast command..."
+	LAVA_MULTI_NODE_API="LAVA_SEND"
+	MESSAGE_COMMAND="<${LAVA_MULTI_NODE_API}"
+	export MESSAGE_ACK="<${LAVA_MULTI_NODE_API}_ACK>"
+	export MESSAGE_REPLY="<${LAVA_MULTI_NODE_API}_COMPLETE"
+	export MESSAGE_REPLY_ACK="<${LAVA_MULTI_NODE_API}_COMPLETE_ACK>"
+	export MESSAGE_HEAD="$MESSAGE_PREFIX $MESSAGE_COMMAND"
+	NETWORK_INFO_STREAM=`lava_multi_node_get_network_info $2`
+	lava_multi_node_send $_LAVA_NETWORK_ID $NETWORK_INFO_STREAM
+	;;
+
+	"collect")
+	_lava_multi_node_debug "$LAVA_MULTI_NODE_API handle collect command..."
+	LAVA_MULTI_NODE_API="LAVA_WAIT_ALL"
+	MESSAGE_COMMAND="<${LAVA_MULTI_NODE_API}"
+	export MESSAGE_ACK="<${LAVA_MULTI_NODE_API}_ACK>"
+	export MESSAGE_REPLY="<${LAVA_MULTI_NODE_API}_COMPLETE"
+	export MESSAGE_REPLY_ACK="<${LAVA_MULTI_NODE_API}_COMPLETE_ACK>"
+	export MESSAGE_HEAD="$MESSAGE_PREFIX $MESSAGE_COMMAND"
+	lava_multi_node_send $_LAVA_NETWORK_ID $3 
+	lava_multi_node_wait_for_message $LAVA_MULTI_NODE_NETWORK_CACHE
+	;;
+
+	"query")
+	_lava_multi_node_debug "$LAVA_MULTI_NODE_API handle query command..."
+	lava_multi_node_check_cache $LAVA_MULTI_NODE_NETWORK_CACHE
+	lava_multi_node_print_host_info $2 $3
+	;;
+
+	"hosts")
+	_lava_multi_node_debug "$LAVA_MULTI_NODE_API handle hosts command..."
+	lava_multi_node_check_cache $LAVA_MULTI_NODE_NETWORK_CACHE
+	lava_multi_node_make_hosts $2
+	;;
+
+	*)
+	_lava_multi_node_debug "$LAVA_MULTI_NODE_API command $1 is not supported."
+	exit $LAVA_MULTI_NODE_EXIT_ERROR
+	;;
+esac

=== added file 'lava_test_shell/multi_node/lava-role'
--- lava_test_shell/multi_node/lava-role	1970-01-01 00:00:00 +0000
+++ lava_test_shell/multi_node/lava-role	2013-06-21 13:23:41 +0000
@@ -0,0 +1,14 @@ 
+#!/bin/sh
+#
+#This file is for Multi-Node test
+#
+#Prints the role the current device is playing in a multi-node job.
+#
+#Usage: ``lava-role``
+#
+#*Example.* In a directory with several scripts, one for each role
+#involved in the test::
+#
+#    $ ./run-`lava-role`.sh
+
+echo ${TARGET_ROLE}

=== added file 'lava_test_shell/multi_node/lava-self'
--- lava_test_shell/multi_node/lava-self	1970-01-01 00:00:00 +0000
+++ lava_test_shell/multi_node/lava-self	2013-08-26 08:33:13 +0000
@@ -0,0 +1,9 @@ 
+#!/bin/sh
+#
+#This file is for Multi-Node test
+#
+#Prints the name of the current device.
+#
+#Usage: ``lava-self``
+
+echo ${LAVA_HOSTNAME}

=== added file 'lava_test_shell/multi_node/lava-send'
--- lava_test_shell/multi_node/lava-send	1970-01-01 00:00:00 +0000
+++ lava_test_shell/multi_node/lava-send	2013-08-26 08:33:13 +0000
@@ -0,0 +1,17 @@ 
+#!/bin/sh
+#
+#This file is for Multi-Node test
+#
+#Sends a message to the group, optionally passing associated key-value
+#data pairs. Sending a message is a non-blocking operation. The message
+#is guaranteed to be available to all members of the group, but some of
+#them might never retrieve it.
+#
+#Usage: ``lava-send <message-id> [key1=val1 [key2=val2] ...]``
+LAVA_MULTI_NODE_API="LAVA_SEND"
+#MESSAGE_TIMEOUT=5
+#MESSAGE_NEED_ACK=yes
+
+. $LAVA_TEST_BIN/lava-multi-node.lib
+
+lava_multi_node_send $1 $(_get_key_value_pattern $@)

=== added file 'lava_test_shell/multi_node/lava-sync'
--- lava_test_shell/multi_node/lava-sync	1970-01-01 00:00:00 +0000
+++ lava_test_shell/multi_node/lava-sync	2013-08-26 08:33:13 +0000
@@ -0,0 +1,20 @@ 
+#!/bin/sh
+#
+#This file is for Multi-Node test
+#
+#Global synchronization primitive. Sends a message, and waits for the
+#same message from all of the other devices.
+#
+#Usage: ``lava-sync <message>``
+#
+#``lava-sync foo`` is effectively the same as ``lava-send foo`` followed
+#by ``lava-wait-all foo``.
+LAVA_MULTI_NODE_API="LAVA_SYNC"
+#MESSAGE_TIMEOUT=5
+#MESSAGE_NEED_ACK=yes
+
+. $LAVA_TEST_BIN/lava-multi-node.lib
+
+lava_multi_node_send $1
+
+lava_multi_node_wait_for_message

=== added file 'lava_test_shell/multi_node/lava-wait'
--- lava_test_shell/multi_node/lava-wait	1970-01-01 00:00:00 +0000
+++ lava_test_shell/multi_node/lava-wait	2013-08-26 08:33:13 +0000
@@ -0,0 +1,21 @@ 
+#!/bin/sh
+#
+#This file is for Multi-Node test
+#
+#Waits until any other device in the group sends a message with the given
+#ID. This call will block until such message is sent.
+#
+#Usage: ``lava-wait <message-id>``
+#
+#If there was data passed in the message, the key-value pairs will be
+#printed in the standard output, each in one line. If no key values were
+#passed, nothing is printed.
+LAVA_MULTI_NODE_API="LAVA_WAIT"
+#MESSAGE_TIMEOUT=5
+#MESSAGE_NEED_ACK=yes
+
+. $LAVA_TEST_BIN/lava-multi-node.lib
+
+lava_multi_node_send $1
+
+lava_multi_node_wait_for_message

=== added file 'lava_test_shell/multi_node/lava-wait-all'
--- lava_test_shell/multi_node/lava-wait-all	1970-01-01 00:00:00 +0000
+++ lava_test_shell/multi_node/lava-wait-all	2013-08-26 08:33:13 +0000
@@ -0,0 +1,23 @@ 
+#!/bin/sh
+#
+#This file is for Multi-Node test
+#
+#Waits until **all** other devices in the group send a message with the
+#given message ID. IF ``<role>`` is passed, only wait until all devices
+#with that given role send a message.
+#
+#``lava-wait-all <message-id> [<role>]``
+#
+#If data was sent by the other devices with the message, the key-value
+#pairs will be printed one per line, prefixed with the device name and
+#whitespace.
+LAVA_MULTI_NODE_API="LAVA_WAIT_ALL"
+#MESSAGE_TIMEOUT=5
+#MESSAGE_NEED_ACK=yes
+
+. $LAVA_TEST_BIN/lava-multi-node.lib
+
+lava_multi_node_send $1 $2
+
+lava_multi_node_wait_for_message
+

=== modified file 'requirements.txt'
--- requirements.txt	2011-11-14 04:24:37 +0000
+++ requirements.txt	2013-07-03 10:17:15 +0000
@@ -1,6 +1,7 @@ 
 django
 django-openid-auth
-linaro-django-jsonfield
+pexpect
 python-openid
 lockfile
 python-daemon
+setproctitle

=== modified file 'setup.py'
--- setup.py	2013-07-17 09:16:24 +0000
+++ setup.py	2013-07-18 14:01:21 +0000
@@ -42,7 +42,7 @@ 
             'lava_test_shell/lava-test-runner-android',
             'lava_test_shell/lava-test-runner-ubuntu',
             'lava_test_shell/lava-test-shell',
-        ])
+            ])
     ],
     install_requires=[
         "json-schema-validator >= 2.3",