Reduce /dev/pve/root?


New Member
Aug 14, 2023

I'm very new to Proxmox, but have managed to get everything up and runnin. 3VM and 2 CT.
However, I f**** up when commissioning.
I created a LVM disk on my entire physical SSD. So now everything is running on the LVM disk.
I would like to be able to take snapshots, so I'm now trying to start over.

But before I re-install everything, including proxmox, I just want to check if there is any way to reduce the size of the LVM drive so that I can create a ZFS drive.
I tried the lvresize, but I chickened out when I got the warning.


Is there anyone that have any pointers?
You don't need ZFS for snapshots. LVM-Thin would have worked too, but you told the installer to not create a LVM-Thin pool ("data" LV or "local-lvm" storage) so you ended up with a normal ext4 root filesystem on top of LVM which won't allow to use snapshots unless you use qcow2 image files.

And yes, you can't simple reduce the size of a LV. You would need to shrink your filesystem first and even then it's always possible to damage your data.
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