On Thu, Jul 21, 2016 at 4:21 PM, Alessandro De Salvo <Alessandro.DeSalvo@roma1.infn.it> wrote:
Hi,
when trying to extend a ceph disk in ovirt 4 (Virtual Machines => Edit
Virtual Machine => Instance images => Edit => Extend size by) I get the
following error:

Error while executing action: interface is required

Sounds like a similar root cause of https://bugzilla.redhat.com/show_bug.cgi?id=1346887
Should be already fixed on latest build. Can you please try to upgrade to latest?

Or, try using the Edit disk dialog under 'VMs => Disks' instead (could be a specific issue with the 'Instance images' flow).
 

In engine.log I see the following errors as well:

2016-07-21 15:14:55,266 ERROR
[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
(default task-35) [] Correlation ID: 47ce3344, Call Stack: null, Custom
Event ID: -1, Message: Failed to update VM test01 disk test01_Disk1
(User: admin@internal-authz).
2016-07-21 15:14:56,091 ERROR
[org.ovirt.engine.core.bll.storage.disk.cinder.ExtendCinderDiskCommandCallback] (DefaultQuartzScheduler8) [2819eb7c] Failed extending disk. ID: a5dd90b1-3a76-4e38-af8c-e829b3b86a40
2016-07-21 15:14:56,124 ERROR
[org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
(DefaultQuartzScheduler8) [2819eb7c] Correlation ID: 2819eb7c, Call
Stack: null, Custom Event ID: -1, Message: Failed to extend size of the
disk 'test01_Disk1' to 20 GB, User: admin@internal-authz.
2016-07-21 15:14:56,209 ERROR
[org.ovirt.engine.core.bll.storage.disk.cinder.ExtendCinderDiskCommand]
(DefaultQuartzScheduler8) [2819eb7c] Ending command
'org.ovirt.engine.core.bll.storage.disk.cinder.ExtendCinderDiskCommand'
with failure.


After this, the cinder image is flagged as illegal and I can just delete
it.
Extending the image on the cinder side is possible, and the command
"cinder extend <id>" works, but then the new size is not properly
reported back in ovirt.
Any clue?
Thanks,

        Alessandro

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