Message ID | 20210727164754.62895-3-vsementsov@virtuozzo.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
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Tue, 27 Jul 2021 16:48:12 +0000 From: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> To: qemu-block@nongnu.org Cc: qemu-devel@nongnu.org, armbru@redhat.com, mreitz@redhat.com, kwolf@redhat.com, vsementsov@virtuozzo.com, jsnow@redhat.com Subject: [PATCH 2/3] job: use complete(do_graph_change=false) to handle soft cancel Date: Tue, 27 Jul 2021 19:47:53 +0300 Message-Id: <20210727164754.62895-3-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210727164754.62895-1-vsementsov@virtuozzo.com> References: <20210727164754.62895-1-vsementsov@virtuozzo.com> Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: HE1PR0501CA0024.eurprd05.prod.outlook.com (2603:10a6:3:1a::34) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from localhost.localdomain (185.215.60.211) by HE1PR0501CA0024.eurprd05.prod.outlook.com (2603:10a6:3:1a::34) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4373.17 via Frontend Transport; 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Series |
mirror: rework soft-cancelling READY mirror
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expand
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diff --git a/blockdev.c b/blockdev.c index 3d8ac368a1..c4ee5f02f4 100644 --- a/blockdev.c +++ b/blockdev.c @@ -3366,7 +3366,16 @@ void qmp_block_job_cancel(const char *device, } trace_qmp_block_job_cancel(job); - job_user_cancel(&job->job, force, errp); + if (!force && job_is_ready(&job->job)) { + /* + * Hack to support old mirror soft-cancel. Please add new API to do + * complete with disabled graph-change, deprecate soft-cancel and + * finally drop this code. + */ + job_complete_ex(&job->job, false, errp); + } else { + job_user_cancel(&job->job, force, errp); + } out: aio_context_release(aio_context); }
Soft cancel of READY mirror is more like completion than cancelling. We have bugs and misunderstanding because of this feature. Now, let's handle it the other way to drop force cancelling at all in the following commit. This makes internal implementation cleaner. Still, we should deprecate and drop old interface (through block-job-cancel) as a separate step. Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com> --- blockdev.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-)