Bug 1264726 - During block-commit, stop guest, qemu will be unresponsive until commit job finished
Summary: During block-commit, stop guest, qemu will be unresponsive until commit job f...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev
Version: 7.2
Hardware: x86_64
OS: Linux
medium
medium
Target Milestone: rc
: ---
Assignee: Jeff Cody
QA Contact: FuXiangChun
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-09-21 03:09 UTC by Pei Zhang
Modified: 2016-11-07 20:39 UTC (History)
10 users (show)

Fixed In Version: qemu 2.6
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-11-07 20:39:18 UTC
Target Upstream Version:

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System ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:2673 normal SHIPPED_LIVE qemu-kvm-rhev bug fix and enhancement update 2016-11-08 01:06:13 UTC

Comment 1 Jeff Cody 2015-09-25 19:32:24 UTC 
I have been able to reproduce this bug, by doing a block-commit on the active layer (as written up in the description).  This also does not occur upstream.

Looking in GDB, we are in aio_poll & bdrv_drain_all, but I have not pinpointed a particular patch as a fix.

This should not result in any data loss, as the job should run to completion, and even if stopped early the chain should still be intact.  However, it is a bad user experience, as it is not known how long it will be until QEMU is responsive again (and it could potentially be a long time, if there is a lot of data to commit).
Comment 5 Mike McCune 2016-03-28 22:44:25 UTC 
This bug was accidentally moved from POST to MODIFIED via an error in automation, please see mmccune@redhat.com with any questions
Comment 7 FuXiangChun 2016-09-14 05:47:41 UTC 
according to comment0.
verified this bug with qemu-kvm-rhev-2.6.0-24.

qemu-kvm active during block-mirror.

so, This bug is fixed.
Comment 9 errata-xmlrpc 2016-11-07 20:39:18 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-2673.html
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