[ovirt-users] 3.6 : iSCSI LUN not detected

Hi, I am reinstalling a new Node with a new hosted-engine and I would like to import an iSCSI storage from a previous ovirt installation. However, I can see all LUN present on that iSCSI but the one I want... I checked from the iSCSI array and this disk still exists, it's just not detected from Ovirt (3.6)... I tried to make a new data domain and chosed that same iSCSI and it's also not detected. Any ideas ? I didn't remove the storage from the Engine interface on the previous installation, just just turned off all VMs accessing the iSCSI and unplugged the cable. Is it possible there is still a lock file or something from the previous hypervisor ?