From patchwork Mon Sep 7 18:20:03 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 274330 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=-9.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS autolearn=ham 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 47EF0C433E2 for ; Mon, 7 Sep 2020 18:31:48 +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 D12ED2087D for ; Mon, 7 Sep 2020 18:31:47 +0000 (UTC) Authentication-Results: mail.kernel.org; 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Mon, 7 Sep 2020 18:20:54 +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 5A64F60BF3; Mon, 7 Sep 2020 18:20:53 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH 21/29] block/export: Add BLOCK_EXPORT_DELETED event Date: Mon, 7 Sep 2020 20:20:03 +0200 Message-Id: <20200907182011.521007-22-kwolf@redhat.com> In-Reply-To: <20200907182011.521007-1-kwolf@redhat.com> References: <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=207.211.31.81; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-1.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/06 22:29:02 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_H2=-0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=unavailable 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" Clients may want to know when an export has finally disappeard (block-export-del returns earlier than that in the general case), so add a QAPI event for it. Signed-off-by: Kevin Wolf Reviewed-by: Max Reitz --- qapi/block-export.json | 12 ++++++++++++ block/export/export.c | 2 ++ tests/qemu-iotests/140.out | 1 + tests/qemu-iotests/223.out | 4 ++++ 4 files changed, 19 insertions(+) diff --git a/qapi/block-export.json b/qapi/block-export.json index 77a6b595e8..dac3250f08 100644 --- a/qapi/block-export.json +++ b/qapi/block-export.json @@ -233,3 +233,15 @@ ## { 'command': 'block-export-del', 'data': { 'id': 'str', '*mode': 'BlockExportRemoveMode' } } + +## +# @BLOCK_EXPORT_DELETED: +# +# Emitted when a block export is removed and it's id can be reused. +# +# @id: Block export id. +# +# Since: 5.2 +## +{ 'event': 'BLOCK_EXPORT_DELETED', + 'data': { 'id': 'str' } } diff --git a/block/export/export.c b/block/export/export.c index 4af3b69186..ae7879e6a9 100644 --- a/block/export/export.c +++ b/block/export/export.c @@ -19,6 +19,7 @@ #include "block/nbd.h" #include "qapi/error.h" #include "qapi/qapi-commands-block-export.h" +#include "qapi/qapi-events-block-export.h" #include "qemu/id.h" static const BlockExportDriver *blk_exp_drivers[] = { @@ -113,6 +114,7 @@ static void blk_exp_delete_bh(void *opaque) assert(exp->refcount == 0); QLIST_REMOVE(exp, next); exp->drv->delete(exp); + qapi_event_send_block_export_deleted(exp->id); g_free(exp->id); g_free(exp); diff --git a/tests/qemu-iotests/140.out b/tests/qemu-iotests/140.out index 86b985da75..f1db409b26 100644 --- a/tests/qemu-iotests/140.out +++ b/tests/qemu-iotests/140.out @@ -15,6 +15,7 @@ read 65536/65536 bytes at offset 0 qemu-io: can't open device nbd+unix:///drv?socket=SOCK_DIR/nbd: Requested export not available server reported: export 'drv' not present { 'execute': 'quit' } +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "drv"}} {"return": {}} {"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "SHUTDOWN", "data": {"guest": false, "reason": "host-qmp-quit"}} *** done diff --git a/tests/qemu-iotests/223.out b/tests/qemu-iotests/223.out index 31ce9e6fe0..f6eac23f04 100644 --- a/tests/qemu-iotests/223.out +++ b/tests/qemu-iotests/223.out @@ -102,8 +102,10 @@ read 2097152/2097152 bytes at offset 2097152 {"execute":"nbd-server-remove", "arguments":{"name":"n"}} {"return": {}} {"execute":"nbd-server-remove", "arguments":{"name":"n2"}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "n"}} {"return": {}} {"execute":"nbd-server-remove", "arguments":{"name":"n2"}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "n2"}} {"error": {"class": "GenericError", "desc": "Export 'n2' is not found"}} {"execute":"nbd-server-stop"} {"return": {}} @@ -183,8 +185,10 @@ read 2097152/2097152 bytes at offset 2097152 {"execute":"nbd-server-remove", "arguments":{"name":"n"}} {"return": {}} {"execute":"nbd-server-remove", "arguments":{"name":"n2"}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "n"}} {"return": {}} {"execute":"nbd-server-remove", "arguments":{"name":"n2"}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "n2"}} {"error": {"class": "GenericError", "desc": "Export 'n2' is not found"}} {"execute":"nbd-server-stop"} {"return": {}}