What is the disk doing?

[Walery]

Hello. Help me figure out what the disk is full of? My virtual machines and backups are stored on different disks.

 

[waltar]

That's just that your lvm storage pool is nearly full allocated into 3 volumes root, swap and data, see
lsblk, pvs, lvs, lvdisplay. As you have no vm/lxc in data yet the usage of data is 0% acoording to your second picture.

 

[Walery]

That's just that your lvm storage pool is nearly full allocated into 3 volumes root, swap and data, see
lsblk, pvs, lvs, lvdisplay. As you have no vm/lxc in data yet the usage of data is 0% acoording to your second picture.

I don't quite understand. Proxmox is installed on a 500 Gb disk. For VM, a 500 Gb disk is used (d1 storage), for storing iso, a 2 Tb disk is used (T1 storage), for backups, a 2 Tb disk is used (backup storage). What exactly takes up space in LVM?

 

[waltar]

The space "97% assigned to LVM" is not really used as think about it's just another level as like partitioned and is just confusing. Your systemdisk has 3 partitions, Bios+EFI+LVM. The LVM partition again is say partitoned again into Swap+root+LVM-thin(called data) until up just 3% reserve which shows you "97% assigned", see "lvs" and "lvdisplay" output. If you don't have a vm sitting in the "lvm-thin data" then it's still empty but is defined there, eg. lines from lvdisplay to vol data:
Allocated pool data 0.00%
Allocated metadata 1.59%