Hi list! During the upgrade ovirt from 3.5 to 3.6, I get errors: "VDSM command failed: Can not acquire host id: (u'8905c9ac-d892-478d-8346-63b8fa1c5763 ', SanlockException (22,' Sanlock lockspace add failure ',' Invalid argument '))", "Failed to attach Storage Domain hosted_storage to Data Center Default. (User: SYSTEM)", "Failed to import the Hosted Engine Storage Domain". Thus in my data storage nfs OVF_STORE disks do not appear. The following messages appear in vdsm.log: Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,569 :: task :: 827 :: Storage.TaskManager.Task: :( resourceAcquired) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : _resourcesAcquired: Storage.8905c9ac-d8 92-478d-8346-63b8fa1c5763 (shared) Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,569 :: task :: 993 :: Storage.TaskManager.Task :: (_ decref) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Ref 1 aborting False Thread-2806 :: ERROR :: 2017-03-14 10: 40: 29,569 :: task :: 866 :: Storage.TaskManager.Task :: (_ setError) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Unexpected error Traceback (most recent last call last): File "/usr/share/vdsm/storage/task.py", line 873, in _run Return fn (* args, ** kargs) File "/usr/share/vdsm/logUtils.py", line 49, in wrapper Res = f (* args, ** kwargs) File "/usr/share/vdsm/storage/hsm.py", line 3315, in getImagesList Images = dom.getAllImages () File "/usr/share/vdsm/storage/fileSD.py", line 373, in getAllImages Self.getPools () [0], IndexError: list index out of range Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,569 :: task :: 885 :: Storage.TaskManager.Task :: (_ run) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Task._run: cd294427-d6fa-454b-9289-6660ad228c8f ('8 905c9ac-d892-478d-8346-63b8fa1c5763 ',) {} failed - stopping task Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,570 :: task :: 1246 :: Storage.TaskManager.Task: :( stop) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Stopping in state preparing (force False) Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,570 :: task :: 993 :: Storage.TaskManager.Task :: (_ decref) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Ref 1 aborting True Thread-2806 :: INFO :: 2017-03-14 10: 40: 29,570 :: task :: 1171 :: Storage.TaskManager.Task: :( prepare) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Aborting: Task is aborted: u'list index out of r Ange '- code 100 Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,570 :: task :: 1176 :: Storage.TaskManager.Task: :( prepare) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Prepare: aborted: list index out of range Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,570 :: task :: 993 :: Storage.TaskManager.Task :: (_ decref) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Ref 0 aborting True Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,570 :: task :: 928 :: Storage.TaskManager.Task :: (_ doAbort) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Task._doAbort: force False Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,571 :: resourceManager :: 980 :: Storage.ResourceManager.Owner: :( cancelAll) Owner.cancelAll requests {} Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,571 :: task :: 595 :: Storage.TaskManager.Task :: (_ updateState) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Moving from state preparing -> state aborti Ng Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,571 :: task :: 550 :: Storage.TaskManager.Task :: (__ state_aborting) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : _aborting: recover policy none Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,571 :: task :: 595 :: Storage.TaskManager.Task :: (_ updateState) Task = `cd294427-d6fa-454b-9289-6660ad228c8f`: : Moving from state aborting -> state failed Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,571 :: resourceManager :: 943 :: Storage.ResourceManager.Owner: :( releaseAll) Owner.releaseAll requests {} resources {'Storage.8905c9ac-d892 -478d-8346-6 3b8fa1c5763 ': <ResourceRef' Storage.8905c9ac-d892-478d-8346-63b8fa1c5763 ', isValid:' True 'obj:' None '>} Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,571 :: resourceManager :: 980 :: Storage.ResourceManager.Owner: :( cancelAll) Owner.cancelAll requests {} Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,572 :: resourceManager :: 619 :: Storage.ResourceManager: :( releaseResource) Trying to release resource 'Storage.8905c9ac-d892-478d-8346-63b8fa1c5763 ' Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,572 :: resourceManager :: 638 :: Storage.ResourceManager: :( releaseResource) Released resource 'Storage.8905c9ac-d892-478d-8346-63b8fa1c5763' ( 0 active Users) Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,572 :: resourceManager :: 644 :: Storage.ResourceManager: :( releaseResource) Resource 'Storage.8905c9ac-d892-478d-8346-63b8fa1c5763' is free , Finding ou T if anyone is waiting for it. Thread-2806 :: DEBUG :: 2017-03-14 10: 40: 29,572 :: resourceManager :: 652 :: Storage.ResourceManager: :( releaseResource) Storage.8905c9ac-d892-478d-8346 -63b8fa1c576 3 ', Clearing records. Does anyone have any idea how this can be fixed? Thanks, Alex.