[ovirt-users] Import ISCSI target as data domain, cannot see old data

Hi Team, Hope you are doing well. I had a standalone Ovirt Engine with 2 hosts, one 2TB ISCSI data domain (dell equallogic). Today the Ovirt Engine machine crashed so we have to bring up a new one, setup is good and when I try to import ISCSI data domain I can see volumes/Luns, but after import, Ovirt shows the volume is empty - 2TB free (so all old data on the ISCSI volume is not presenting). However when I login to the ISCSI target machine, it shows the old data (around 400GB) is in use. Seems like the new Ovirt Engine cannot detect the old ISCSI data domain disk content. Thank you, Sincerely, SYZhao