From: Kevin Wolf <kwolf@redhat.com>
To: Alberto Garcia <berto@igalia.com>
Cc: qemu-devel@nongnu.org, qemu-block@nongnu.org,
qemu-stable@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-devel] [PATCH 0/2] Correct access to wrong BlockBackendPublic structures
Date: Tue, 18 Oct 2016 16:09:12 +0200 [thread overview]
Message-ID: <20161018140912.GJ4706@noname.str.redhat.com> (raw)
In-Reply-To: <cover.1476718804.git.berto@igalia.com>
Am 17.10.2016 um 17:46 hat Alberto Garcia geschrieben:
> Hi all,
>
> Paolo found that commit 27ccdd52598290f introduced a regression in the
> throttling code.
>
> It can be easily reproduced in scenarios where you have a throttling
> group with several drives but you only write to one of them. In that
> case the round-robin algorithm can select the wrong drive all the time
> and the actual requests are never completed.
>
> QEMU 2.7 is affected, here's the patch to fix it, plus a test case.
Thanks, applied to the block branch.
Kevin
prev parent reply other threads:[~2016-10-18 14:09 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-17 15:46 [Qemu-devel] [PATCH 0/2] Correct access to wrong BlockBackendPublic structures Alberto Garcia
2016-10-17 15:46 ` [Qemu-devel] [PATCH 1/2] throttle: " Alberto Garcia
2016-10-17 15:56 ` Paolo Bonzini
2016-10-17 15:46 ` [Qemu-devel] [PATCH 2/2] qemu-iotests: Test I/O in a single drive from a throttling group Alberto Garcia
2016-10-18 14:09 ` Kevin Wolf [this message]
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