Can't answer directly your question since I'm not aware of PVE backup internals however as a workaround you could try to:
If your zfs volumes (where vms reside) have compression enabled, you could reclaim unused space by: - running sdelete on windows vms - creating a zero filled file via dd on linux and then deleting it. Zfs compression should do its job after that. On Monday, 12 September 2016, Mikhail <[email protected]> wrote: > Hello, > > Right now I'm moving virtual machines from old 3.x node (storage model: > LVM) to new 4.x node. The new node has ZFS RAID10 setup over 4x4TB local > disks. My storage for virtual machines has ZFS Thin Provisioning enabled > and it actually works for newly created virtual machines - in other > words I can give 100GB disk to machine, and only actually used space > will be taken from available ZFS pool. > > This, however, does not work for restored from backups virtual machines. > I'm doing simple backup-restore procedure (backup on 3.x node and > restore on 4.x node to ZFS), and what I see is that if there's 100GB > disk in backup then it takes 100GB on restore (even thought actually > there's only 5GB used). Does that mean I won't be able to take advantage > of ZFS Thin Provisioning when restoring vms from backups? > > regards, > _______________________________________________ > pve-user mailing list > [email protected] <javascript:;> > http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user > -- Sent from Gmail Mobile _______________________________________________ pve-user mailing list [email protected] http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-user
