On March 19, 2020 2:34:16 PM GMT+02:00, Rik Theys <rik.th...@esat.kuleuven.be> wrote: >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
Are you sure that you zeroed out the empty space? I would enable the trim option for the VMs' disks, then run fstrim from the vm and last try to sparsify ? If it's linux, you can do storage migration from the OS. Best Regards, Strahil Nikolov _______________________________________________ Users mailing list -- users@ovirt.org To unsubscribe send an email to users-le...@ovirt.org Privacy Statement: https://www.ovirt.org/privacy-policy.html oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/ZRUDAIDT3YE2OHEQCBWDGJQMRXGPQ3FZ/
