Red Hat Bugzilla – Bug 1253974
[vdsm] Live merge fails after a disk containing a snapshot has been extended
Last modified: 2016-03-10 10:13:22 EST
Description of problem:
The same scenario as in https://bugzilla.redhat.com/show_bug.cgi?id=1236758.
Tried to do live deletion of a snapshot after the VM disk was extended. The operation ends with a failure in VDSM:
acff4189-cfc2-404d-9c03-ddfb33e36104::ERROR::2015-08-16 10:45:58,925::task::866::Storage.TaskManager.Task::(_setError) Task=`acff4189-cfc2-404d-9c03-ddfb33e36104`::Unexpected error
Traceback (most recent call last):
File "/usr/share/vdsm/storage/task.py", line 873, in _run
return fn(*args, **kargs)
File "/usr/share/vdsm/storage/task.py", line 332, in run
return self.cmd(*self.argslist, **self.argsdict)
File "/usr/share/vdsm/storage/securable.py", line 77, in wrapper
return method(self, *args, **kwargs)
File "/usr/share/vdsm/storage/sp.py", line 1304, in extendVolumeSize
File "/usr/share/vdsm/storage/volume.py", line 552, in extendSize
VolumeNonWritable: Volume cannot be access to writes: ["u'46d93a59-0ec1-4c7c-9f25-816be8d0760b'"]
Version-Release number of selected component (if applicable):
Steps to Reproduce:
1. Create a VM with 1gb preallocated disk (probably thin as well, didn't test that) in a block-based domain.
2. Create a snapshot.
3. Extend the disk to 2gb.
4. Start the VM.
5. Delete the snapshot.
Live snapshot deletion fails on VDSM with the mentioned exception
Live merge should succeed for a snapshot that was previously extended.
sosreport from host: http://file.tlv.redhat.com/ebenahar/sosreport-green-vdsc.qa.lab.tlv.redhat.com-20150816120535.tar.xz
sosreport from engine: http://file.tlv.redhat.com/ebenahar/sosreport-RHEL6.7Server-20150816120920.tar.xz
I believe this should be closed (duplicate of 1232481?), see my latest comment to bug 1236758 for details.
Target release should be placed once a package build is known to fix a issue. Since this bug is not modified, the target version has been reset. Please use target milestone to plan a fix for a oVirt release.
this is an automated message. oVirt 3.6.0 RC3 has been released and GA is targeted to next week, Nov 4th 2015.
Please review this bug and if not a blocker, please postpone to a later release.
All bugs not postponed on GA release will be automatically re-targeted to
- 3.6.1 if severity >= high
- 4.0 if severity < high
closed bug. clearing NEEDINFO.