Bug 1190571

This seems as a duplicate of https://bugzilla.redhat.com/show_bug.cgi?id=1115126
and seems related to the version of libvirt in use.
this issue was observed by ebenahar as well.

Adam, can you take a look? (as you looked into the bug i've attached)

thanks,
Liron

Sorry, not a duplicate - a clone of.

(In reply to Liron Aravot from comment #4)
> This seems as a duplicate of
> https://bugzilla.redhat.com/show_bug.cgi?id=1115126
> and seems related to the version of libvirt in use.
> this issue was observed by ebenahar as well.
> 
> Adam, can you take a look? (as you looked into the bug i've attached)
> 
> thanks,
> Liron

Adam, can you please confirm/refute?

It seems like the most likely explanation but without the full vdsm log during a failure I won't be able to confirm it.  I need to see the error messages from libvirt calls which aren't captured by this grep of the vdsm logs.

Martin Tessun, could you attach a full vdsm log from when the problem happened?

Hi Adam,

log is attached.

The relevant part seems to be this snippet:

Thread-153::INFO::2015-02-06 16:09:16,701::clientIF::321::vds::(prepareVolumePath) prepared volume path: /rhev/data-center/84ee5743-d9e6-40f7-bc84-3ee68455acc6/f6589b8e-4eed-4e3a-91e2-5726ba39a4dd/images/a6b6478b-a1a7-44a8-9669-7d6ba236e774/3a436041-a566-4bca-83b2-7cc999339d3a
Thread-153::DEBUG::2015-02-06 16:09:16,701::vm::4075::vm.Vm::(snapshot) vmId=`11e5229d-d751-4f48-ba1f-d7f0b8f207f9`::<domainsnapshot>
        <disks>
                <disk name="vda" snapshot="external" type="block">
                        <source dev="/rhev/data-center/84ee5743-d9e6-40f7-bc84-3ee68455acc6/f6589b8e-4eed-4e3a-91e2-5726ba39a4dd/images/a6b6478b-a1a7-44a8-9669-7d6ba236e774/3a436041-a566-4bca-83b2-7cc999339d3a" type="block"/>
                </disk>
        </disks>
</domainsnapshot>

Thread-153::DEBUG::2015-02-06 16:09:16,708::libvirtconnection::124::root::(wrapper) Unknown libvirterror: ecode: 67 edom: 35 level: 2 message: unsupported configuration: source for disk 'vda' is not a regular file; refusing to generate external snapshot name
Thread-153::DEBUG::2015-02-06 16:09:16,708::vm::4096::vm.Vm::(snapshot) vmId=`11e5229d-d751-4f48-ba1f-d7f0b8f207f9`::Snapshot failed using the quiesce flag, trying again without it (unsupported configuration: source for disk 'vda' is not a regular file; refusing to generate external snapshot name)
Thread-153::DEBUG::2015-02-06 16:09:16,714::libvirtconnection::124::root::(wrapper) Unknown libvirterror: ecode: 67 edom: 35 level: 2 message: unsupported configuration: source for disk 'vda' is not a regular file; refusing to generate external snapshot name
Thread-153::ERROR::2015-02-06 16:09:16,714::vm::4100::vm.Vm::(snapshot) vmId=`11e5229d-d751-4f48-ba1f-d7f0b8f207f9`::Unable to take snapshot
Traceback (most recent call last):
  File "/usr/share/vdsm/vm.py", line 4098, in snapshot
    self._dom.snapshotCreateXML(snapxml, snapFlags)
  File "/usr/share/vdsm/vm.py", line 928, in f
    ret = attr(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/vdsm/libvirtconnection.py", line 92, in wrapper
    ret = f(*args, **kwargs)
  File "/usr/lib64/python2.6/site-packages/libvirt.py", line 1679, in snapshotCreateXML
    if ret is None:raise libvirtError('virDomainSnapshotCreateXML() failed', dom=self)
libvirtError: unsupported configuration: source for disk 'vda' is not a regular file; refusing to generate external snapshot name

Cheers,
Martin

Thanks Martin,

This is indeed a duplicate of https://bugzilla.redhat.com/show_bug.cgi?id=1115126

(In reply to Adam Litke from comment #10)
> Thanks Martin,
> 
> This is indeed a duplicate of
> https://bugzilla.redhat.com/show_bug.cgi?id=1115126

Thanks guys.
Closing as a dup of 1190742 (the 3.4.z clone of 1115126).

*** This bug has been marked as a duplicate of bug 1190742 ***