Backup zfs usage and size

[parker0909]

Hi All,

I facing the problem about proxmox Backup. I am using the zfs volume to backup our PVE, but i got the problem when we keep a few day snapshot, it seem the usage over 95% now. I tried to use prune function to set keep last:1 snapshot only, but it seem the usage size didn't drop/reduce. May i know more idea/suggest to free up more diskspace.

Regards,
Parker

 

[dcsapak]

after you prune, you need to run garbage collection. pruning only remove the references of the chunks, garbage collection actually removes the chunks that are not needed anymore.
please note that unused chunks are only removed 24 hours after the last snapshot that uses it is gone.