Hi, i've a big problem, i juste shutdown (power off completely) a guest to make a cold restart. And at startup the guest say : "Cannot access backing file '/rhev/data-center/mnt/blockSD/69348aea-7f55-41be-ae4e-febd86c33855/images/8224b2b0-39ba-44ef-ae41-18fe726f26ca/ca141675-c6f5-4b03-98b0-0312254f91e8'" When i look from shell on Hypervisor the device file is red blinking... Trying to change SPM, look device into all hosts, copy disk etc... no way to get my disk back online. It seems ovirt completely lost (delete?) the block device. There is a way to manually dump (dd) the device in command line in order to import it inside ovirt? My environment Storage : SAN (managed by ovirt) Ovirt-engine 4.4.3.12-1.el8 Host centos 8.2 Vdsm 4.40.26 Thanks for help i'm stuck and it's really urgent -- Lionel Caignec