From: Paolo Bonzini <pbonzini@redhat.com>
To: Christian Borntraeger <borntraeger@de.ibm.com>,
Fam Zheng <famz@redhat.com>
Cc: Kevin Wolf <kwolf@redhat.com>, qemu-devel <qemu-devel@nongnu.org>,
Stefan Hajnoczi <stefanha@redhat.com>
Subject: Re: [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup
Date: Thu, 16 Jul 2015 13:20:42 +0200 [thread overview]
Message-ID: <55A7938A.8000101@redhat.com> (raw)
In-Reply-To: <55A78F87.9030805@de.ibm.com>
On 16/07/2015 13:03, Christian Borntraeger wrote:
> For what its worth, I can no longer reproduce the issue on
> current master + cherry-pick of a0710f7995f (iothread: release iothread around aio_poll)
>
> bisect tells me that
>
> commit 53ec73e264f481b79b52efcadc9ceb8f8996975c
> Author: Fam Zheng <famz@redhat.com>
> AuthorDate: Fri May 29 18:53:14 2015 +0800
> Commit: Stefan Hajnoczi <stefanha@redhat.com>
> CommitDate: Tue Jul 7 14:27:14 2015 +0100
>
> block: Use bdrv_drain to replace uncessary bdrv_drain_all
>
> made the problem will blk-null go away. I still dont understand why.
It could be related to the AioContext problem that I'm fixing these
days, too. Good news, we'll requeue the patch for 2.5.
Paolo
next prev parent reply other threads:[~2015-07-16 11:20 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-02 14:36 [Qemu-devel] "iothread: release iothread around aio_poll" causes random hangs at startup Christian Borntraeger
2015-06-02 14:51 ` Paolo Bonzini
2015-06-03 9:17 ` Stefan Hajnoczi
2015-06-09 2:28 ` Fam Zheng
2015-06-09 9:01 ` Christian Borntraeger
2015-06-10 2:12 ` Fam Zheng
2015-06-10 9:18 ` Christian Borntraeger
2015-06-10 9:34 ` Fam Zheng
2015-06-10 10:31 ` Christian Borntraeger
2015-07-16 11:03 ` Christian Borntraeger
2015-07-16 11:20 ` Paolo Bonzini [this message]
2015-07-16 11:24 ` Christian Borntraeger
2015-07-16 11:37 ` Paolo Bonzini
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