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Bug 915349 - Libvirt is not relabelling qcow2 backing files
Summary: Libvirt is not relabelling qcow2 backing files
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: libvirt
Version: 6.4
Hardware: x86_64
OS: Linux
urgent
urgent
Target Milestone: rc
: ---
Assignee: Eric Blake
QA Contact: Virtualization Bugs
URL:
Whiteboard:
: 910806 919074 957276 973160 (view as bug list)
Depends On: 896013
Blocks:
TreeView+ depends on / blocked
 
Reported: 2013-02-25 15:05 UTC by Chris Pelland
Modified: 2016-04-26 15:39 UTC (History)
27 users (show)

Fixed In Version: libvirt-0.10.2-18.el6_4.2
Doc Type: Bug Fix
Doc Text:
Cause: In RHEL 6.4, libvirt started caching storage file backing chains. However, the code only populated the cache when cgroups were in use. Consequence: Without cgroups, a missing cache meant sVirt was unable to properly label backing chain files, preventing guest startup. Fix: Populating the cache was moved earlier, independent of cgroups. Result: More efficient sVirt operations, regardless of cgroups.
Clone Of:
Environment:
Last Closed: 2013-03-21 13:46:42 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2013:0664 0 normal SHIPPED_LIVE libvirt bug fix and enhancement update 2013-03-21 17:37:54 UTC

Description Chris Pelland 2013-02-25 15:05:20 UTC 
This bug has been copied from bug #896013 and has been proposed
to be backported to 6.4 z-stream (EUS).
Comment 5 Eric Blake 2013-02-25 23:52:00 UTC 
In POST:
http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-February/msg00239.html
Comment 6 Lon Hohberger 2013-03-08 21:18:01 UTC 
*** Bug 919074 has been marked as a duplicate of this bug. ***
Comment 7 Lon Hohberger 2013-03-08 21:19:59 UTC 
*** Bug 910806 has been marked as a duplicate of this bug. ***
Comment 8 Lon Hohberger 2013-03-08 21:24:36 UTC 
The patch resolved the AVCs in 910806 / 919074
Comment 11 Huang Wenlong 2013-03-18 05:48:43 UTC 
Verify this bug with:
libvirt-0.10.2-18.el6_4.1.x86_64
qemu-kvm-rhev-0.12.1.2-2.355.el6_4.2.x86_64

1)stop cgroup service 
#service cgconfig stop 

2) restart libvirtd service 
#service libvirtd restart 

3) start a domain 

#virsh start bug
Domain bug started


4) create a disk-only snapshot 
# virsh snapshot-create-as --disk-only bug s1
Domain snapshot s1 created

5)check images 
]# ll -Z /mnt/sda5/images/bug.*
-rw-------. qemu qemu unconfined_u:object_r:svirt_image_t:s0:c100,c954 /mnt/sda5/images/bug.img
-rw-------. qemu qemu unconfined_u:object_r:svirt_image_t:s0:c100,c954 /mnt/sda5/images/bug.s1

6)restart guest 
# virsh destroy bug
Domain bug destroyed

# virsh start bug
Domain bug started

7)# service cgconfig status
Stopped
Comment 12 Jiri Denemark 2013-03-18 14:58:36 UTC 
The patch for this bug causes a regression (bug 922683), which we need to fix.
Comment 13 Jiri Denemark 2013-03-18 15:01:47 UTC 
Back in POST to pull in the regression fix: http://post-office.corp.redhat.com/archives/rhvirt-patches/2013-March/msg00195.html
Comment 15 Huang Wenlong 2013-03-19 05:19:47 UTC 
Verify this bug with :
libvirt-0.10.2-18.el6_4.2.x86_64
vdsm-4.10.2-1.8.el6ev.x86_64

scenario 1:  PASS


1)stop cgroup service 
#service cgconfig stop 

2) restart libvirtd service 
#service libvirtd restart 

3) start a domain 

#virsh start bug
Domain bug started


4) create a disk-only snapshot 
# virsh snapshot-create-as --disk-only bug s3
Domain snapshot s3 created


6)restart guest 
# virsh destroy bug
Domain bug destroyed

# virsh start bug
Domain bug started

7)# service cgconfig status
Stopped

scenario 2(BZ 922683): PASS 

1.Prepare a iscsi storage in rhevm , install a guest in it

2.Active a iso domain , add it's iso  into the guest 

3.inActive the iso domain , then migrate the guest it can succeed
Comment 17 errata-xmlrpc 2013-03-21 13:46:42 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-2013-0664.html
Comment 18 Alan Pevec 2013-04-29 08:40:52 UTC 
*** Bug 957276 has been marked as a duplicate of this bug. ***
Comment 19 Alan Pevec 2013-06-11 14:07:05 UTC 
*** Bug 973160 has been marked as a duplicate of this bug. ***
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