I managed to log back in by updating to ovirt-engine-wildfly-15.0.1-1 But now, I have the original vm disk and its clone in Locked State There are no task listed in the UI, neither in vdsm-client : On SPM Host : vdsm-client Host getAllTasksInfo {} If I try to put the Data Domain in maintenance, I get : Error while executing action: Cannot deactivate Storage while there are running tasks on this Storage. -Tasks running: CopyImageGroup -Please wait until tasks will finish and try again. If I try engine-setup, I am blocker by : [ INFO ] Cleaning async tasks and compensations The following system tasks have been found running in the system: Task ID: cae248f7-781e-4861-bfbe-89d6e654a996 Task Name: Unknown Task Description: Unknown Started at: 30 DC Name: DC_INT The following commands have been found running in the system: The following compensations have been found running in the system: Would you like to try to wait for that?