From: "Denis V. Lunev" <den-lists@parallels.com>
To: Alexandre DERUMIER <aderumier@odiso.com>,
ceph-devel <ceph-devel@vger.kernel.org>,
qemu-devel <qemu-devel@nongnu.org>
Subject: Re: [Qemu-devel] qemu : rbd block driver internal snapshot and vm_stop is hanging forever
Date: Mon, 9 Nov 2015 10:22:34 +0300 [thread overview]
Message-ID: <564049BA.1090805@parallels.com> (raw)
In-Reply-To: <5640490B.5030700@parallels.com>
On 11/09/2015 10:19 AM, Denis V. Lunev wrote:
> On 11/09/2015 06:10 AM, Alexandre DERUMIER wrote:
>> Hi,
>>
>> with qemu (2.4.1), if I do an internal snapshot of an rbd device,
>> then I pause the vm with vm_stop,
>>
>> the qemu process is hanging forever
>>
>>
>> monitor commands to reproduce:
>>
>>
>> # snapshot_blkdev_internal drive-virtio0 yoursnapname
>> # stop
>>
>>
>>
>>
>> I don't see this with qcow2 or sheepdog block driver for example.
>>
>>
>> Regards,
>>
>> Alexandre
>>
> this could look like the problem I have recenty trying to
> fix with dataplane enabled. Patch series is named as
>
> [PATCH for 2.5 v6 0/10] dataplane snapshot fixes
>
> Den
anyway, even if above will not help, can you collect gdb
traces from all threads in QEMU process. May be I'll be
able to give a hit.
Den
next prev parent reply other threads:[~2015-11-09 7:22 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-09 3:10 [Qemu-devel] qemu : rbd block driver internal snapshot and vm_stop is hanging forever Alexandre DERUMIER
2015-11-09 3:23 ` Alexandre DERUMIER
2015-11-09 3:54 ` Alexandre DERUMIER
2015-11-09 4:18 ` Alexandre DERUMIER
2015-11-09 7:19 ` Denis V. Lunev
2015-11-09 7:22 ` Denis V. Lunev [this message]
2015-11-09 10:48 ` Alexandre DERUMIER
2015-11-09 13:42 ` Jason Dillaman
2015-11-09 13:43 ` Stefan Priebe - Profihost AG
2015-11-09 14:02 ` Alexandre DERUMIER
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