Let's say I have a VM running on PVE, which stores some files for me. For the sake of the example, we'll say that it is 100GB of DMG files and 50GB of PDF files, on the same virtual disk located on a LVM-Thin volume.
I use PVE's built in backup solution and save the backups to a regular SMB share on an offsite NAS, and the backup is roughly 150GB in size.
One day I decide that I do not need the 100GB of DMG files anymore, so I delete them. But new backups are still roughly 150GB in size... I assume that it is because when a thin virtual disk has used the space once, the virtual disk does not shrink back down automatically.
But is there something I can do to easily shrink it? That would save me both backup space, bandwidth and give room for other VM's on the volume.
I use PVE's built in backup solution and save the backups to a regular SMB share on an offsite NAS, and the backup is roughly 150GB in size.
One day I decide that I do not need the 100GB of DMG files anymore, so I delete them. But new backups are still roughly 150GB in size... I assume that it is because when a thin virtual disk has used the space once, the virtual disk does not shrink back down automatically.
But is there something I can do to easily shrink it? That would save me both backup space, bandwidth and give room for other VM's on the volume.
