Bug 840933 - Do not submit multiple jobs referring to the same VM image (KVM)
Summary: Do not submit multiple jobs referring to the same VM image (KVM)
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise MRG
Classification: Red Hat
Component: Release_Notes
Version: 2.2
Hardware: x86_64
OS: Linux
unspecified
unspecified
Target Milestone: ---
: ---
Assignee: Tomas Capek
QA Contact: ecs-bugs
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2012-07-17 16:23 UTC by Luigi Toscano
Modified: 2012-09-20 12:37 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Release Note
Doc Text:
When multiple VM universe jobs refer to the same VM image, they are not prevented from using the image at the same time in KVM. Multiple jobs, represented by qemu-kvm processes, accessing the same VM image can cause data corruption. To work around this bug, do not submit multiple jobs referring to the same VM image.
Clone Of:
Environment:
Last Closed: 2012-09-20 12:37:45 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Luigi Toscano 2012-07-17 16:23:48 UTC 
Description of problem:
The problem is described into rhbz839961: when multiple VM universe jobs refer to the same VM image, they are not prevented to using it at the same time in KVM. Multiple jobs (i.e. multiple qemu-kvm processes) accessing the same VM image can easily lead to data corruption.
The issue is not scheduled for inclusion in the next version of MRG (2.2), hence the request for inclusion into release notes (even if it is not a regression).
Comment 1 Tomas Capek 2012-08-30 15:42:03 UTC 
Added to:

Red_Hat_Enterprise_MRG-MRG_Release_Notes-2-en-US-1-8.2

http://documentation-devel.engineering.redhat.com/docs/en-US/Red_Hat_Enterprise_MRG/2/html/MRG_Release_Notes/chap-MRG_Release_Notes-GRID.html#Grid_Known_Issues_2.2
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