[ovirt-users] Storage migration: Preallocation forced on destination

Hi, We're migrating an existing storage (glusterfs) to a new one (iSCSI). All disks on glusterfs are thin provisioned, but when migrating to iSCSI the following warning is shown: The following disks will become preallocated, and may consume considerably more space on the target: local-disk Why is that? Is there a way to migrate disks so they are thin provisioned on iSCSI as well? Thanks.