From patchwork Thu Sep 24 15:27:07 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kevin Wolf X-Patchwork-Id: 11797867 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id F1DC4112C for ; Thu, 24 Sep 2020 16:14:21 +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 62F5023741 for ; Thu, 24 Sep 2020 16:14:21 +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="M2PVK5qE" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 62F5023741 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+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Received: from localhost ([::1]:57774 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kLTsx-00029t-TZ for patchwork-qemu-devel@patchwork.kernel.org; Thu, 24 Sep 2020 12:14:19 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:49240) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kLTAS-0001yF-Eg for qemu-devel@nongnu.org; Thu, 24 Sep 2020 11:28:20 -0400 Received: from us-smtp-delivery-124.mimecast.com ([63.128.21.124]:31807) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA1:256) (Exim 4.90_1) (envelope-from ) id 1kLTAP-0005aV-6b for qemu-devel@nongnu.org; Thu, 24 Sep 2020 11:28:20 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1600961296; 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: in-reply-to:in-reply-to:references:references; bh=p8+wXt46aADpCxQohqhH82gdAxWcUq+sbQryO7wOejY=; b=M2PVK5qEN0QlxPZ8THDArWOAMFZxGGpLJXvfme2FG6Y7A3Ux20vW8uDoaGQcMocn7EbUty UtCX+h5k7uS/xD4Z6yfFMqe+EwFIBRddnML5mYQn4psrIhlMyn9OWgDl/xcnUXgo92a+vL nvMyZu1nFgLFUilsnKyARHDwM//XT8s= 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-82-hV10kG2iNg6DAr5AlD2UjQ-1; Thu, 24 Sep 2020 11:28:14 -0400 X-MC-Unique: hV10kG2iNg6DAr5AlD2UjQ-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 28A10884DDA; Thu, 24 Sep 2020 15:28:07 +0000 (UTC) Received: from linux.fritz.box.com (ovpn-114-72.ams2.redhat.com [10.36.114.72]) by smtp.corp.redhat.com (Postfix) with ESMTP id DDD9460C04; Thu, 24 Sep 2020 15:28:05 +0000 (UTC) From: Kevin Wolf To: qemu-block@nongnu.org Subject: [PATCH v2 21/31] block/export: Add BLOCK_EXPORT_DELETED event Date: Thu, 24 Sep 2020 17:27:07 +0200 Message-Id: <20200924152717.287415-22-kwolf@redhat.com> In-Reply-To: <20200924152717.287415-1-kwolf@redhat.com> References: <20200924152717.287415-1-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 X-Mimecast-Originator: redhat.com Received-SPF: pass client-ip=63.128.21.124; envelope-from=kwolf@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/09/24 01:10:00 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -32 X-Spam_score: -3.3 X-Spam_bar: --- X-Spam_report: (-3.3 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.199, 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, stefanha@redhat.com, mreitz@redhat.com Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.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 | 9 ++++++++- tests/qemu-iotests/140.out | 2 +- tests/qemu-iotests/223.out | 4 ++++ 5 files changed, 27 insertions(+), 2 deletions(-) diff --git a/qapi/block-export.json b/qapi/block-export.json index 0ba4d84c97..3551c2e748 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 its 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 d186beffe9..87940d5c40 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 b/tests/qemu-iotests/140 index 8d2ce5d9e3..309b177e77 100755 --- a/tests/qemu-iotests/140 +++ b/tests/qemu-iotests/140 @@ -81,10 +81,17 @@ $QEMU_IO_PROG -f raw -r -c 'read -P 42 0 64k' \ "nbd+unix:///drv?socket=$SOCK_DIR/nbd" 2>&1 \ | _filter_qemu_io | _filter_nbd +# The order of 'return' and the BLOCK_EXPORT_DELETED event is undefined. Just +# wait until we've twice seen one of them. Filter the 'return' line out so that +# the output is defined. _send_qemu_cmd $QEMU_HANDLE \ "{ 'execute': 'eject', 'arguments': { 'device': 'drv' }}" \ - 'return' + 'return\|BLOCK_EXPORT_DELETED' | + grep -v 'return' + +_send_qemu_cmd $QEMU_HANDLE '' 'return\|BLOCK_EXPORT_DELETED' | + grep -v 'return' $QEMU_IO_PROG -f raw -r -c close \ "nbd+unix:///drv?socket=$SOCK_DIR/nbd" 2>&1 \ diff --git a/tests/qemu-iotests/140.out b/tests/qemu-iotests/140.out index 86b985da75..62d9c3ab3c 100644 --- a/tests/qemu-iotests/140.out +++ b/tests/qemu-iotests/140.out @@ -11,7 +11,7 @@ wrote 65536/65536 bytes at offset 0 read 65536/65536 bytes at offset 0 64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) { 'execute': 'eject', 'arguments': { 'device': 'drv' }} -{"return": {}} +{"timestamp": {"seconds": TIMESTAMP, "microseconds": TIMESTAMP}, "event": "BLOCK_EXPORT_DELETED", "data": {"id": "drv"}} 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' } 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": {}}