Ovirt Software Version:4.5.1.2-1.el8 So, i've datastor with type managed block storage (ceph backend) with driver cinder.volume.drivers.rbd.RBDDriver (connected using official instuction) I can successfully create and attach disks to virtual machines. But Case 1: Can't run vm with attached mbs disk Log files: engine.log ``` 2022-08-22 10:30:46,929Z INFO [org.ovirt.engine.core.vdsbroker.CreateVDSCommand] (EE-ManagedThreadFactory-engine-Thread-33748) [4a367039] START, CreateVDSCommand( CreateVDSCommandParameters:{hostId='ca0b6c75-6f4d-4706-8420-a8a85834a26e', vmId='ceb677b3-d0ad-4e99-8ca8-226ce9cf7621', vm='VM [clone_ahrechushkin-2]'}), log id: 4a63fb47 2022-08-22 10:30:46,933Z INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateBrokerVDSCommand] (EE-ManagedThreadFactory-engine-Thread-33748) [4a367039] START, CreateBrokerVDSCommand(HostName = ovih01, CreateVDSCommandParameters:{hostId='ca0b6c75-6f4d-4706-8420-a8a85834a26e', vmId='ceb677b3-d0ad-4e99-8ca8-226ce9cf7621', vm='VM [clone_ahrechushkin-2]'}), log id: 279ca1cc 2022-08-22 10:30:47,217Z ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateBrokerVDSCommand] (EE-ManagedThreadFactory-engine-Thread-33748) [4a367039] Failed in 'CreateBrokerVDS' method, for vds: 'ovih01'; host: 'ovih01': null 2022-08-22 10:30:47,221Z ERROR [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateBrokerVDSCommand] (EE-ManagedThreadFactory-engine-Thread-33748) [4a367039] Command 'CreateBrokerVDSCommand(HostName = ovih01, CreateVDSCommandParameters:{hostId='ca0b6c75-6f4d-4706-8420-a8a85834a26e', vmId='ceb677b3-d0ad-4e99-8ca8-226ce9cf7621', vm='VM [clone_ahrechushkin-2]'})' execution failed: null 2022-08-22 10:30:47,221Z INFO [org.ovirt.engine.core.vdsbroker.vdsbroker.CreateBrokerVDSCommand] (EE-ManagedThreadFactory-engine-Thread-33748) [4a367039] FINISH, CreateBrokerVDSCommand, return: , log id: 279ca1cc 2022-08-22 10:30:47,223Z ERROR [org.ovirt.engine.core.vdsbroker.CreateVDSCommand] (EE-ManagedThreadFactory-engine-Thread-33748) [4a367039] Failed to create VM: java.lang.NullPointerException 2022-08-22 10:30:47,228Z ERROR [org.ovirt.engine.core.vdsbroker.CreateVDSCommand] (EE-ManagedThreadFactory-engine-Thread-33748) [4a367039] Command 'CreateVDSCommand( CreateVDSCommandParameters:{hostId='ca0b6c75-6f4d-4706-8420-a8a85834a26e', vmId='ceb677b3-d0ad-4e99-8ca8-226ce9cf7621', vm='VM [clone_ahrechushkin-2]'})' execution failed: java.lang.NullPointerException 2022-08-22 10:30:47,229Z INFO [org.ovirt.engine.core.vdsbroker.CreateVDSCommand] (EE-ManagedThreadFactory-engine-Thread-33748) [4a367039] FINISH, CreateVDSCommand, return: Down, log id: 4a63fb47 ``` cinderlib.log ``` 022-08-22 10:28:17,260 - cinderlib-client - INFO - Cloning volume '3f763b9c-1bd2-4174-8603-c30587cb4e03' to 'c5a301c7-fc59-400f-8733-61e34c8fadf1' [716f43c7-09a7-4a43-9a3a-461db2cc3653] 2022-08-22 10:30:39,781 - cinder.volume.driver - INFO - Driver hasn't implemented _init_vendor_properties() 2022-08-22 10:30:39,840 - cinderlib-client - INFO - Connecting volume 'c5a301c7-fc59-400f-8733-61e34c8fadf1', to host with info '{"ip":null,"nqn":"nqn.2014-08.org.nvmexpress:uuid:00000000-0000-0000-0000-000000000000","host":"ovih01","uuid":"b0d5ac8a-4a14-46cb-a114-1bc8ffbc7cec","os_type":"linux","platform":"x86_64","found_dsc":"","initiator":"iqn.2020-01.io.icdc.tby:ovih01","multipath":true,"system uuid":"48b0666c-082c-11ea-a3b1-3a68dd1a0257","do_local_attach" :false}' [7307cc9] 2022-08-22 10:30:44,260 - cinder.volume.driver - INFO - Driver hasn't implemented _init_vendor_properties() 2022-08-22 10:30:44,395 - cinderlib-client - INFO - Saving connection <cinderlib.Connection object 2a531747-4ae2-4dae-bc13-c341ec30eece on backend mbs_domain> for volume 'c5a301c7-fc59-400f-8733-61e34c8fadf1' [4a367039] 2022-08-22 10:30:51,363 - cinder.volume.driver - INFO - Driver hasn't implemented _init_vendor_properties() 2022-08-22 10:30:51,485 - cinderlib-client - INFO - Disconnecting volume 'c5a301c7-fc59-400f-8733-61e34c8fadf1' [62acd0ed] ``` Case 2: Can't activate attached disk on running vm. Strange things: when disk is deactivated and vm if powered on i see on host: [root@ovih01 ~]# rbd showmapped id pool namespace image snap device 0 cinder volume-c5a301c7-fc59-400f-8733-61e34c8fadf1 - /dev/rbd0 Also i can't activate disk with ERROR: disk already attached to vm. Of cause i didn't see disk from guest os.