I tried the option to "Scan Disks" for the imported storage domain but I get this error in engine.log and does not change anything:
2018-11-07 16:41:25,440+01 ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.GetVolumeInfoVDSCommand] (default task-34) [51450801-5353-4e8b-b72a-66ddd71ba6b2] Failed in 'GetVolumeInfoVDS' method
2018-11-07 16:41:25,440+01 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.GetVolumeInfoVDSCommand] (default task-34) [51450801-5353-4e8b-b72a-66ddd71ba6b2] Command 'org.ovirt.engine.core.vdsbroker.vdsbroker.GetVolumeInfoVDSCommand' return value '
VolumeInfoReturn:{status='Status [code=201, message=Volume does not exist: (u'37bc4b45-69f9-4dc4-a9b8-c6f4582c6cbe',)]'}
I was able to find the correct disk images in the glusterfs volume and uploaded one of them through the web interface and attached to corresponding imported virtual machine.
The VM does not start completely. It complains now about disk size:
Device /dev/sda2 has size of 22528 sectors which is smaller than corresponding PV size of 166746122
This is thin provision disk.
Do you have any ideas?