[ovirt-users] problem while moving/copying disks: vdsm low level image copy failed
Hello,
We get this error message while moving or copying some of the disks on
our main cluster running 4.1.2 on centos7
This is shown in the engine:
VDSM vbgkvm02 command HSMGetAllTasksStatusesVDS failed: low level Image
copy failed
I can copy it inside the host. And i can use dd to copy. Haven't tried
to run qemu-img manually yet.
This is from vdsm.log on the host:
2017-07-28 09:07:22,741+0200 ERROR (tasks/6) [root] Job u'c82d4c53-
3eb4-405e-a2d5-c4c77519360e' failed (jobs:217)
Traceback (most recent call last):
File "/usr/lib/python2.7/site-packages/vdsm/jobs.py", line 154, in
run
self._run()
File "/usr/share/vdsm/storage/sdm/api/copy_data.py", line 88, in _run
self._operation.wait_for_completion()
File "/usr/lib/python2.7/site-packages/vdsm/qemuimg.py", line 329, in
wait_for_completion
self.poll(timeout)
File "/usr/lib/python2.7/site-packages/vdsm/qemuimg.py", line 324, in
poll
self.error)
QImgError: cmd=['/usr/bin/taskset', '--cpu-list', '0-15',
'/usr/bin/nice', '-n', '19', '/usr/bin/ionice',
'-c', '3',
'/usr/bin/qemu-img', 'convert', '-p', '-t',
'none', '-T', 'none', '-f',
'raw', u'/rhev/data-center/mnt/glusterSD/vbgsan02:_fs02/0924ff77-ef51-
43
5b-b90d-50bfbf2e8de7/images/750f4184-b852-4b00-94fc-
476f3f5b93c7/3fe43487-3302-4b34-865a-07c5c6aedbf2', '-O', 'raw',
u'/rhev/data-center/mnt/glusterSD/10.137.30.105:_fs03/5d47a297-a21f-
4587-bb7c-dd00d52010d5/images/750f4184-b852-4b00-94fc-
476f3f5b93c7/3fe43487-3302-4b34-865
a-07c5c6aedbf2'], ecode=1, stdout=, stderr=qemu-img: error while
reading sector 12197886: No data available
, message=None
The storage domains are all based on gluster. The storage domains that
we see this on is configured as dispersed volumes.
Found a way to "fix" the problem. And that is to run dd if=/dev/vda
of=/dev/null bs=1M inside the virtual guest. After that we can copy an
image or use storage livemigration.
Is this a gluster problem or an vdsm problem? Or could it be something
with qemu-img?
/Johan