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Bug 1208021 - Live Merge: Active layer merge is not properly synchronized with vdsm
Summary: Live Merge: Active layer merge is not properly synchronized with vdsm
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: libvirt
Version: 7.1
Hardware: Unspecified
OS: Unspecified
urgent
urgent
Target Milestone: rc
: ---
Assignee: Peter Krempa
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On: 1206365
Blocks:
TreeView+ depends on / blocked
 
Reported: 2015-04-01 08:31 UTC by Jan Kurik
Modified: 2015-05-12 17:54 UTC (History)
21 users (show)

Fixed In Version: libvirt-1.2.8-16.el7_1.3
Doc Type: Bug Fix
Doc Text:
Cause: A recent bug fix introduced a regression when a block job is finished via the synchronous block job API. The code that is updating the backing chain of the disk after the block job finishes was extracted into a separate thread and thus allowed to race with other threads. Consequence: If one thread is executing the synchronous abort/pivot operation while a second thread is already waiting to access the domain definition to read the backing chain, the update operation will be queued after the query thread and thus the query thread will not get the updated backing chain data. Fix: When a synchronous Abort/Pivot operation is requested, the backing chain update is done in the same thread that is waiting for completion of the job. This assures that the backing chain info is updated in time. Result: Different threads are able to get correct backing chain data after a synchronous blockJobAbort is issued.
Clone Of: 1206365
Environment:
Last Closed: 2015-05-12 17:54:56 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2015:0973 0 normal SHIPPED_LIVE libvirt bug fix update 2015-05-12 21:54:42 UTC

Description Jan Kurik 2015-04-01 08:31:08 UTC 
This bug has been copied from bug #1206365 and has been proposed
to be backported to 7.1 z-stream (EUS).
Comment 18 Kevin Alon Goldblatt 2015-05-03 08:29:57 UTC 
libvirt-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-client-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-config-network-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-config-nwfilter-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-driver-interface-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-driver-lxc-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-driver-network-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-driver-nodedev-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-driver-nwfilter-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-driver-qemu-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-driver-secret-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-driver-storage-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-kvm-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-daemon-lxc-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-debuginfo-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-devel-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-docs-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-lock-sanlock-1.2.8-16.el7_1.3.x86_64.rpm
libvirt-login-shell-1.2.8-16.el7_1.3.x86_64.rpm

Steps to Reproduce:
1. Create a VM with 3 BLOCK disks (1 thin and 2 preallocated)
2. Start the VM
3. Create a snapshot
4. Delete the snapshot - Works fine
Comment 19 dyuan 2015-05-05 07:01:53 UTC 
Thanks Kevin. Move the bug to VERIFIED.
Comment 21 errata-xmlrpc 2015-05-12 17:54:56 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-2015-0973.html
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