I have a storage data center that I can't use. It's a local one. When I look on vdsm.log: 2019-04-02 10:55:48,336+0200 INFO (jsonrpc/2) [vdsm.api] FINISH connectStoragePool error=Cannot find master domain: u'spUUID=063d1217-6194-48a0-943e-3d873f2147de, msdUUID=49b1bd15-486a-4064-878e-8030c8108e09' from=::ffff:XXXXX,59590, task_id=a56a5869-a219-4659-baa3-04f673b2ad55 (api:50) 2019-04-02 10:55:48,336+0200 ERROR (jsonrpc/2) [storage.TaskManager.Task] (Task='a56a5869-a219-4659-baa3-04f673b2ad55') Unexpected error (task:875) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 882, in _run return fn(*args, **kargs) File "<string>", line 2, in connectStoragePool File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 48, in method ret = func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/storage/hsm.py", line 1035, in connectStoragePool spUUID, hostID, msdUUID, masterVersion, domainsMap) File "/usr/lib/python2.7/site-packages/vdsm/storage/hsm.py", line 1097, in _connectStoragePool res = pool.connect(hostID, msdUUID, masterVersion) File "/usr/lib/python2.7/site-packages/vdsm/storage/sp.py", line 700, in connect self.__rebuild(msdUUID=msdUUID, masterVersion=masterVersion) File "/usr/lib/python2.7/site-packages/vdsm/storage/sp.py", line 1274, in __rebuild self.setMasterDomain(msdUUID, masterVersion) File "/usr/lib/python2.7/site-packages/vdsm/storage/sp.py", line 1495, in setMasterDomain raise se.StoragePoolMasterNotFound(self.spUUID, msdUUID) StoragePoolMasterNotFound: Cannot find master domain: u'spUUID=063d1217-6194-48a0-943e-3d873f2147de, msdUUID=49b1bd15-486a-4064-878e-8030c8108e09' 2019-04-02 10:55:48,336+0200 INFO (jsonrpc/2) [storage.TaskManager.Task] (Task='a56a5869-a219-4659-baa3-04f673b2ad55') aborting: Task is aborted: "Cannot find master domain: u'spUUID=063d1217-6194-48a0-943e-3d873f2147de, msdUUID=49b1bd15-486a-4064-878e-8030c8108e09'" - code 304 (task:1181) 2019-04-02 11:44:50,862+0200 INFO (jsonrpc/0) [vdsm.api] FINISH getSpmStatus error=Unknown pool id, pool not connected: (u'063d1217-6194-48a0-943e-3d873f2147de',) from=::ffff:10.83.16.34,46546, task_id=cfb1c871-b1d4-4b1a-b2a5-f91ddfaba 54b (api:50) 2019-04-02 11:44:50,862+0200 ERROR (jsonrpc/0) [storage.TaskManager.Task] (Task='cfb1c871-b1d4-4b1a-b2a5-f91ddfaba54b') Unexpected error (task:875) Traceback (most recent call last): File "/usr/lib/python2.7/site-packages/vdsm/storage/task.py", line 882, in _run return fn(*args, **kargs) File "<string>", line 2, in getSpmStatus File "/usr/lib/python2.7/site-packages/vdsm/common/api.py", line 48, in method ret = func(*args, **kwargs) File "/usr/lib/python2.7/site-packages/vdsm/storage/hsm.py", line 634, in getSpmStatus pool = self.getPool(spUUID) File "/usr/lib/python2.7/site-packages/vdsm/storage/hsm.py", line 350, in getPool raise se.StoragePoolUnknown(spUUID) StoragePoolUnknown: Unknown pool id, pool not connected: (u'063d1217-6194-48a0-943e-3d873f2147de',) 063d1217-6194-48a0-943e-3d873f2147de is indeed the datacenter id and 49b1bd15-486a-4064-878e-8030c8108e09 the storage domain: <storage_domain href="/ovirt-engine/api/storagedomains/49b1bd15-486a-4064-878e-8030c8108e09" id="49b1bd15-486a-4064-878e-8030c8108e09"> <storage> <type>fcp</type> <volume_group id="cEOxNG-R4fv-EDo3-Y3lm-ZMAH-xOT4-Nn8QyP"> <logical_units> </logical_units> </volume_group> </storage> <storage_format>v4</storage_format> <data_centers> <data_center href="/ovirt-engine/api/datacenters/063d1217-6194-48a0-943e-3d873f2147de" id="063d1217-6194-48a0-943e-3d873f2147de"/> </data_centers> </storage_domain> On engine.log, I'm also getting: 2019-04-02 11:43:57,531+02 INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.HSMGetAllTasksStatusesVDSCommand] (EE-ManagedThreadFactory-engineScheduled-Thread-12) [] Command 'org.ovirt.engine.core.vdsbroker.vdsbroker.HSMGetAllTasksStatusesVDSCommand' return value ' TaskStatusListReturn:{status='Status [code=654, message=Not SPM: ()]'} ' lsblk shows that the requested volumes are here: lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT cciss!c0d1 104:16 0 1.9T 0 disk |-49b1bd15--486a--4064--878e--8030c8108e09-metadata 253:0 0 512M 0 lvm |-49b1bd15--486a--4064--878e--8030c8108e09-outbox 253:1 0 128M 0 lvm |-49b1bd15--486a--4064--878e--8030c8108e09-xleases 253:2 0 1G 0 lvm |-49b1bd15--486a--4064--878e--8030c8108e09-leases 253:3 0 2G 0 lvm |-49b1bd15--486a--4064--878e--8030c8108e09-ids 253:4 0 128M 0 lvm |-49b1bd15--486a--4064--878e--8030c8108e09-inbox 253:5 0 128M 0 lvm |-49b1bd15--486a--4064--878e--8030c8108e09-master 253:6 0 1G 0 lvm |-49b1bd15--486a--4064--878e--8030c8108e09-6225ddc3--b600--49ef--8de4--6e53bf4cad1f 253:7 0 128M 0 lvm `-49b1bd15--486a--4064--878e--8030c8108e09-bdac3a3a--8633--41bf--921d--db2cf31f5d1c 253:8 0 128M 0 lvm There is no usefull data on them. So I don't mind destroying everything. But using the GUI I can't do any thing on that domain. I'm runing 4.2.7.5-1.el7 on rhel 7.6