[ovirt-users] Re: storage use after storage live migration

Hi, We are in the process of migrating our VM's from one storage domain to another. Both domains are FC storage. There are VM's with thin provisioned disks of 16G that currently only occupy 3G according to the interface. When we live migrate the disks (with the VM running), I can see that a snapshot is being taken and removed afterwards. After the storage migration, the occupied disk space on the new storage domain is 6G. Even for a VM that hardly has any writes. How can I reclaim this space? I've powered down the VM and did a sparsify on the disk but this doesn't seem to have any effect. When I do a storage migration of a VM with a thin provisioned disk that is down during the migration, the used disk space does not increase. VM's with fully allocated disks also don't seem to exhibit this behavior. My storage domain now also contains VM with more occupied storage space and the size of the disk?? There are no snapshots listed for those disks. Is there a way to clean up this situation? Regards, Rik