Bug 704124

Summary: [RFE] Allow read-only commands during qemu migration
Product: Red Hat Enterprise Linux 6 Reporter: Federico Simoncelli <fsimonce>
Component: libvirtAssignee: Federico Simoncelli <fsimonce>
Status: CLOSED ERRATA QA Contact: Virtualization Bugs <virt-bugs>
Severity: unspecified Docs Contact:
Priority: unspecified    
Version: 6.2CC: bsarathy, dallan, dyuan, hateya, mzhan, rwu, syeghiay, weizhan
Target Milestone: rcKeywords: FutureFeature
Target Release: ---   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: libvirt-0.9.2-1.el6 Doc Type: Enhancement
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2011-12-06 11:06:52 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 693512    
Attachments:
Description Flags
0001-qemu-allow-blkstat-blkinfo-calls-during-migration.patch
none
migrating-old pkg
none
finish migration - old pkg
none
new-migrating with new pkg none

Description Federico Simoncelli 2011-05-12 08:36:19 UTC 
Description of problem:
Most of libvirt domain-specific calls are blocking during a qemu migration.

Version-Release number of selected component (if applicable):
libvirt-0.9.1

Steps to Reproduce:
1. define a vm
2. migrate the vm to a different host
3. during the migration execute domblkstat/domblkinfo
  
Actual results:
The domblkstat/domblkinfo calls are blocked until migration completes.

Expected results:
The domblkstat/domblkinfo calls should return the correct values also during migration.
Comment 1 Federico Simoncelli 2011-05-12 08:37:34 UTC 
*** Bug 679811 has been marked as a duplicate of this bug. ***
Comment 2 Federico Simoncelli 2011-05-12 08:52:15 UTC 
Created attachment 498479 [details]
0001-qemu-allow-blkstat-blkinfo-calls-during-migration.patch

Patch proposed upstream.
Comment 4 RHEL Program Management 2011-05-13 06:02:15 UTC 
Since RHEL 6.1 External Beta has begun, and this bug remains
unresolved, it has been rejected as it is not proposed as
exception or blocker.

Red Hat invites you to ask your support representative to
propose this request, if appropriate and relevant, in the
next release of Red Hat Enterprise Linux.
Comment 6 Federico Simoncelli 2011-05-26 22:32:58 UTC 
The fix has been committed upstream:

http://libvirt.org/git/?p=libvirt.git;a=commit;h=18c2a592064d69499f70428e498f4a3cb5161cda
Comment 8 Daniel Veillard 2011-06-23 03:14:56 UTC 
This should be fixed by the libvirt-0.9.2-1.el6 rebase
Comment 10 Min Zhan 2011-06-24 09:04:46 UTC 
Created attachment 509703 [details]
migrating-old pkg
Comment 11 Min Zhan 2011-06-24 09:05:30 UTC 
Created attachment 509704 [details]
finish migration - old pkg
Comment 12 Min Zhan 2011-06-24 09:07:03 UTC 
Created attachment 509705 [details]
new-migrating with new pkg
Comment 20 Rita Wu 2011-07-06 10:18:20 UTC 
Set it as VERIFIED per comment18
Comment 21 errata-xmlrpc 2011-12-06 11:06:52 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.

http://rhn.redhat.com/errata/RHBA-2011-1513.html