Hello everyone,

I'm about to start digging through the mailing list archives in search of a solution but thought I would post to the list as well.  I'm running oVirt 3.6 on a 2 node CentOS7 cluster backed by fiber channel storage and with a separate engine VM running outside of the cluster (NOT  hosted-engine).

When I try to move the SPM role from one node to the other I get the following in the web interface:

Inline image 1

When I look into /var/log/ovirt-engine/engine.log I see the following:

2017-01-18 13:35:09,332 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.HSMGetAllTasksStatusesVDSCommand] (default task-26) [6990cfca] Failed in 'HSMGetAllTasksStatusesVDS' method
2017-01-18 13:35:09,340 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (default task-26) [6990cfca] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VDSM v6 command failed: Logical Volume extend failed

When I look at the task list on the host currently holding the SPM role (in this case 'v6'), using: vdsClient -s 0 getAllTasks, I see a long list like this:

dc75d3e7-cea7-449b-9a04-76fd8ef0f82b :
         verb = downloadImageFromStream
         code = 554
         state = recovered
         tag = spm
         result =
         message = Logical Volume extend failed
         id = dc75d3e7-cea7-449b-9a04-76fd8ef0f82b

When I look at /var/log/vdsm/vdsm.log on the host in question (v6) I see messages like this:

'531dd533-22b1-47a0-aae8-76c1dd7d9a56': {'code': 554, 'tag': u'spm', 'state': 'recovered', 'verb': 'downloadImageFromStreaam', 'result': '', 'message': 'Logical Volume extend failed', 'id': '531dd533-22b1-47a0-aae8-76c1dd7d9a56'}

As well as the error from the attempted extend of the logical volume:

e980df5f-d068-4c84-8aa7-9ce792690562::ERROR::2017-01-18 13:24:50,710::task::866::Storage.TaskManager.Task::(_setError) Task=`e980df5f-d068-4c84-8aa7-9ce792690562`::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 1776, in downloadImageFromStream
    .copyToImage(methodArgs, sdUUID, imgUUID, volUUID)
  File "/usr/share/vdsm/storage/image.py", line 1373, in copyToImage
    / volume.BLOCK_SIZE)
  File "/usr/share/vdsm/storage/blockVolume.py", line 310, in extend
    lvm.extendLV(self.sdUUID, self.volUUID, sizemb)
  File "/usr/share/vdsm/storage/lvm.py", line 1179, in extendLV
    _resizeLV("lvextend", vgName, lvName, size)
  File "/usr/share/vdsm/storage/lvm.py", line 1175, in _resizeLV
    raise se.LogicalVolumeExtendError(vgName, lvName, "%sM" % (size, ))
LogicalVolumeExtendError:
Logical Volume extend failed: 'vgname=ae05947f-875c-4507-ad51-62b0d35ef567 lvname=caaef597-eddd-4c24-8df2-a61f35f744f8 newsize=1M'
e980df5f-d068-4c84-8aa7-9ce792690562::DEBUG::2017-01-18 13:24:50,711::task::885::Storage.TaskManager.Task::(_run) Task=`e980df5f-d068-4c84-8aa7-9ce792690562`::Task._run: e980df5f-d068-4c84-8aa7-9ce792690562 () {} failed - stopping task

The logical volume in question is an OVF_STORE disk that lives on one of the fiber channel backed LUNs.  If I run:

vdsClient -s 0 ClearTask TASK-UUID-HERE

for each task that appears in the:

vdsClient -s 0 getAllTasks 

output then they disappear and I'm able to move the SPM role to the other host.

This problem then crops up again on the new host once the SPM role is moved.  What's going on here?  Does anyone have any insight as to how to prevent this task from re-appearing?  Or why it's failing in the first place?

Beau