Hi, I want to import a FC storage domain from an oVirt 4.3.10 setup to a fresh installed oVirt 4.5.5. I could move domain to maintenance, detach, remove from 4.3.10 and import with activate option to 4.5.5 for one FC LUN fine. When i tried for the second FC lun - during import,activate i get "Error while executing action Attach Storage Domain: Internal Engine Error" and in engine.log i get " Query 'GetUnregisteredDisksQuery' failed: null', and on the standalone engine, i get :- 2024-06-26 07:15:07,277+05 ERROR [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (default task-102) [] An error occurred while fetching unregistered disks from Storage Domain id 'a5a72b44-f9bc-4e5b-ab43-ca2b1d97b429' 2024-06-26 07:15:07,277+05 ERROR [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (default task-102) [] Command 'org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand' failed: Failed to retrieve unregistered disks 2024-06-26 07:15:07,277+05 ERROR [org.ovirt.engine.core.bll.storage.domain.AttachStorageDomainToPoolCommand] (default task-102) [] Exception: java.lang.RuntimeException: Failed to retrieve unregistered disks I have checked using "Scan Disk" on the FC lun before exporting from 4.3.10 and there were no floating disks. I have checked if any of the VM's on the domain have any of their disks on any other storage domain - there are none. On the host used for importing the domain, i get :- 2024-06-26 07:15:04,829+0530 INFO (jsonrpc/5) [storage.hba] Scanning FC devices (hba:42) 2024-06-26 07:15:04,938+0530 INFO (periodic/0) [vdsm.api] START repoStats(domains=()) from=internal, task_id=9f03d412-56a7-4f3f-85b6-c3fd72a68817 (api:31) 2024-06-26 07:15:04,938+0530 INFO (periodic/0) [vdsm.api] FINISH repoStats return={'7c9e748c-442b-48d0-9b35-a769d349c73b': {'code': 0, 'lastCheck': '3.7', 'delay': '0.000974057', 'valid': True, 'version': 0, 'acquired': True, 'actual': True}, 'a589fe14-f40a-4d67-afcd-ec74b07009cf': {'code': 0, 'lastCheck': '3.7', 'delay': '0.000501601', 'valid': True, 'version': 0, 'acquired': True, 'actual': True}, '6b625ecb-1cd1-43c5-b533-32000cd050ec': {'code': 0, 'lastCheck': '3.7', 'delay': '0.000570869', 'valid': True, 'version': 5, 'acquired': True, 'actual': True}} from=internal, task_id=9f03d412-56a7-4f3f-85b6-c3fd72a68817 (api:37) 2024-06-26 07:15:04,968+0530 INFO (jsonrpc/5) [storage.hba] Scanning FC devices: 0.14 seconds (utils:373) 2024-06-26 07:15:04,968+0530 INFO (jsonrpc/5) [storage.multipath] Waiting until multipathd is ready (multipath:95) 2024-06-26 07:15:07,003+0530 INFO (jsonrpc/5) [storage.multipath] Waited 2.04 seconds for multipathd (tries=2, ready=2) (multipath:120) 2024-06-26 07:15:07,003+0530 INFO (jsonrpc/5) [storage.multipath] Resizing multipath devices (multipath:223) 2024-06-26 07:15:07,014+0530 INFO (jsonrpc/5) [storage.multipath] Resizing multipath devices: 0.01 seconds (utils:373) 2024-06-26 07:15:07,014+0530 INFO (jsonrpc/5) [storage.storagedomaincache] Refreshing storage domain cache: 2.60 seconds (utils:373) 2024-06-26 07:15:07,263+0530 INFO (jsonrpc/5) [storage.volumemanifest] Creating image directory '/rhev/data-center/mnt/blockSD/a5a72b44-f9bc-4e5b-ab43-ca2b1d97b429/images/f054c394-2b49-4087-9e9d-0490b23e34e4' (blockVolume:106) 2024-06-26 07:15:07,263+0530 ERROR (jsonrpc/5) [storage.volumemanifest] Unexpected error (blockVolume:110) Traceback (most recent call last): File "/usr/lib/python3.9/site-packages/vdsm/storage/blockVolume.py", line 108, in validateImagePath os.mkdir(imageDir, 0o755) FileNotFoundError: [Errno 2] No such file or directory: '/rhev/data-center/mnt/blockSD/a5a72b44-f9bc-4e5b-ab43-ca2b1d97b429/images/f054c394-2b49-4087-9e9d-0490b23e34e4' 2024-06-26 07:15:07,263+0530 INFO (jsonrpc/5) [vdsm.api] FINISH prepareImage error=Image path does not exist or cannot be accessed/created: ('/rhev/data-center/mnt/blockSD/a5a72b44-f9bc-4e5b-ab43-ca2b1d97b429/images/f054c394-2b49-4087-9e9d-0490b23e34e4',) from=::ffff:10.10.99.100,51116, flow_id=872d7930-e487-4fe4-8e0a-599074105d7b, task_id=523690f8-24b3-4f1f-801e-8391ebb087a2 (api:35) 2024-06-26 07:15:07,263+0530 ERROR (jsonrpc/5) [storage.taskmanager.task] (Task='523690f8-24b3-4f1f-801e-8391ebb087a2') Unexpected error (task:860) Traceback (most recent call last): File "/usr/lib/python3.9/site-packages/vdsm/storage/blockVolume.py", line 108, in validateImagePath os.mkdir(imageDir, 0o755) FileNotFoundError: [Errno 2] No such file or directory: '/rhev/data-center/mnt/blockSD/a5a72b44-f9bc-4e5b-ab43-ca2b1d97b429/images/f054c394-2b49-4087-9e9d-0490b23e34e4' During handling of the above exception, another exception occurred: Traceback (most recent call last): File "/usr/lib/python3.9/site-packages/vdsm/storage/task.py", line 867, in _run return fn(*args, **kargs) File "<decorator-gen-169>", line 2, in prepareImage File "/usr/lib/python3.9/site-packages/vdsm/common/api.py", line 33, in method ret = func(*args, **kwargs) File "/usr/lib/python3.9/site-packages/vdsm/storage/hsm.py", line 2958, in prepareImage legality = dom.produceVolume(imgUUID, volUUID).getLegality() File "/usr/lib/python3.9/site-packages/vdsm/storage/sd.py", line 1188, in produceVolume return self.getVolumeClass()(self.mountpoint, self.sdUUID, imgUUID, File "/usr/lib/python3.9/site-packages/vdsm/storage/volume.py", line 881, in __init__ self._manifest = self.manifestClass(repoPath, sdUUID, imgUUID, volUUID) File "/usr/lib/python3.9/site-packages/vdsm/storage/blockVolume.py", line 40, in __init__ volume.VolumeManifest.__init__(self, repoPath, sdUUID, imgUUID, File "/usr/lib/python3.9/site-packages/vdsm/storage/volume.py", line 67, in __init__ self.validate() File "/usr/lib/python3.9/site-packages/vdsm/storage/blockVolume.py", line 135, in validate volume.VolumeManifest.validate(self) File "/usr/lib/python3.9/site-packages/vdsm/storage/volume.py", line 99, in validate self.validateImagePath() File "/usr/lib/python3.9/site-packages/vdsm/storage/blockVolume.py", line 111, in validateImagePath raise se.ImagePathError(imageDir) vdsm.storage.exception.ImagePathError: Image path does not exist or cannot be accessed/created: ('/rhev/data-center/mnt/blockSD/a5a72b44-f9bc-4e5b-ab43-ca2b1d97b429/images/f054c394-2b49-4087-9e9d-0490b23e34e4',) 2024-06-26 07:15:07,263+0530 INFO (jsonrpc/5) [storage.taskmanager.task] (Task='523690f8-24b3-4f1f-801e-8391ebb087a2') aborting: Task is aborted: "value=Image path does not exist or cannot be accessed/created: ('/rhev/data-center/mnt/blockSD/a5a72b44-f9bc-4e5b-ab43-ca2b1d97b429/images/f054c394-2b49-4087-9e9d-0490b23e34e4',) abortedcode=254" (task:1165) 2024-06-26 07:15:07,264+0530 ERROR (jsonrpc/5) [storage.dispatcher] FINISH prepareImage error=Image path does not exist or cannot be accessed/created: ('/rhev/data-center/mnt/blockSD/a5a72b44-f9bc-4e5b-ab43-ca2b1d97b429/images/f054c394-2b49-4087-9e9d-0490b23e34e4',) (dispatcher:66) 2024-06-26 07:15:07,264+0530 INFO (jsonrpc/5) [jsonrpc.JsonRpcServer] RPC call Image.prepare failed (error 254) in 2.85 seconds (__init__:300) Any help will be useful, we are moving from 4.3.10 on IBM servers and storage to 4.5.5 on DELL servers and storage Regards Sumit Basu