From patchwork Mon Sep 7 18:19:42 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 274341 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 979C1C433E2 for ; Mon, 7 Sep 2020 18:21:38 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 0072620732 for ; Mon, 7 Sep 2020 18:21:37 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=redhat.com header.i=@redhat.com header.b="I+K34pX1" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0072620732 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35478 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kFLlp-0006nj-05 for qemu-devel@archiver.kernel.org; Mon, 07 Sep 2020 14:21:37 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:42122) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kFLks-0004tV-Ay for qemu-devel@nongnu.org; Mon, 07 Sep 2020 14:20:39 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:36363) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kFLkk-0004RF-CU for qemu-devel@nongnu.org; Mon, 07 Sep 2020 14:20:34 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1599502828; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding; bh=CU9lugc1k/bVfer+aY5ls8wAJiBCFEk0+My6vYaPL9c=; b=I+K34pX13kBeikd0BhXTqtRIoVyzcXKFzfBqEUCL3E433L0fBjufFOqGLzYixskKCF/AP+ TC2TxlJsGRXdfTHlS0tf5PbpPBx5VMzQe9sL5tHvwkrbDpZ52cfA0mjazP0sHwMli1x06/ l+0ZaxttGqRZd1ZrGErsIbM4JtvZc6w= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-65-KFr-mF-rNhiPGnSCh6GgqA-1; Mon, 07 Sep 2020 14:20:25 -0400 X-MC-Unique: KFr-mF-rNhiPGnSCh6GgqA-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 436BF801FDC; Mon, 7 Sep 2020 18:20:24 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-114-154.ams2.redhat.com [10.36.114.154]) by smtp.corp.redhat.com (Postfix) with ESMTP id 2957D60BF3; Mon, 7 Sep 2020 18:20:23 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH 00/29] block/export: Add infrastructure and QAPI for block exports Date: Mon, 7 Sep 2020 20:19:42 +0200 Message-Id: <20200907182011.521007-1-kwolf@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=kwolf@redhat.com X-Mimecast-Spam-Score: 0.001 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=216.205.24.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/07 14:12:50 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -21 X-Spam_score: -2.2 X-Spam_bar: -- X-Spam_report: (-2.2 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, qemu-devel@nongnu.org, mreitz@redhat.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" We are planning to add more block export types than just NBD in the near future (e.g. vhost-user-blk and FUSE). This series lays the ground for this with some generic block export infrastructure and QAPI interfaces that will allow managing all of them (for now add/remove/query). As a side effect, qemu-storage-daemon can now map --export directly to the block-export-add QMP command, similar to other command line options. The built-in NBD servers also gains new options that bring it at least a little closer to feature parity with qemu-nbd. Kevin Wolf (29): nbd: Remove unused nbd_export_get_blockdev() qapi: Create block-export module qapi: Rename BlockExport to BlockExportOptions block/export: Add BlockExport infrastructure and block-export-add qemu-storage-daemon: Use qmp_block_export_add() qemu-nbd: Use raw block driver for --offset block/export: Remove magic from block-export-add nbd: Add max-connections to nbd-server-start nbd: Add writethrough to block-export-add nbd: Remove NBDExport.close callback qemu-nbd: Use blk_exp_add() to create the export nbd/server: Simplify export shutdown block/export: Move refcount from NBDExport to BlockExport block/export: Move AioContext from NBDExport to BlockExport block/export: Add node-name to BlockExportOptions block/export: Allocate BlockExport in blk_exp_add() block/export: Add blk_exp_close_all(_type) block/export: Add 'id' option to block-export-add block/export: Move strong user reference to block_exports block/export: Add block-export-del block/export: Add BLOCK_EXPORT_DELETED event block/export: Move blk to BlockExport block/export: Create BlockBackend in blk_exp_add() block/export: Add query-block-exports block/export: Move writable to BlockExportOptions nbd: Merge nbd_export_new() and nbd_export_create() nbd: Deprecate nbd-server-add/remove iotests: Factor out qemu_tool_pipe_and_status() iotests: Test block-export-* QMP interface qapi/block-core.json | 166 -------------- qapi/block-export.json | 291 ++++++++++++++++++++++++ qapi/qapi-schema.json | 1 + docs/system/deprecated.rst | 8 + include/block/export.h | 89 ++++++++ include/block/nbd.h | 22 +- block.c | 2 +- block/export/export.c | 318 +++++++++++++++++++++++++++ block/monitor/block-hmp-cmds.c | 13 +- blockdev-nbd.c | 171 +++++++------- nbd/server.c | 309 +++++++++++--------------- qemu-nbd.c | 67 +++--- storage-daemon/qemu-storage-daemon.c | 27 +-- tests/qemu-iotests/iotests.py | 59 ++--- block/export/meson.build | 1 + block/meson.build | 2 + meson.build | 2 +- qapi/meson.build | 4 +- storage-daemon/qapi/qapi-schema.json | 1 + tests/qemu-iotests/140.out | 1 + tests/qemu-iotests/223.out | 8 +- tests/qemu-iotests/307 | 117 ++++++++++ tests/qemu-iotests/307.out | 111 ++++++++++ tests/qemu-iotests/group | 1 + 24 files changed, 1267 insertions(+), 524 deletions(-) create mode 100644 qapi/block-export.json create mode 100644 include/block/export.h create mode 100644 block/export/export.c create mode 100644 block/export/meson.build create mode 100755 tests/qemu-iotests/307 create mode 100644 tests/qemu-iotests/307.out Reviewed-by: Max Reitz Reviewed-by: Max Reitz Reviewed-by: Max Reitz Reviewed-by: Max Reitz