root@host:~# lvs LV VG Attr LSize Pool Origin Data% Meta% Move Log Cpy%Sync Convert data pve -wi-ao---- 321.75g root pve -wi-ao---- 96.00g swap pve -wi-ao---- 31.00g
So, my friend kind of explained it to me, and showed me the math using the lvs command.
Here is mine: View attachment 9902
So, I do have 5 volume, even though I thought I only had 2. He said he doesn't know how EXACTLY the math works, but that data is basically a 'close sum' of the vm disks I have.
The whole size of the volume is considered allocated as far as the volume manager is concerned and you can't over-commit.
That's indeed true in my case.
OK - so I don't need to be worried about running out?
Filesystem Size Used Avail Use% Mounted on udev 16G 0 16G 0% /dev tmpfs 3.2G 306M 2.9G 10% /run /dev/mapper/pve-root 95G 6.3G 84G 7% / tmpfs 16G 37M 16G 1% /dev/shm tmpfs 5.0M 0 5.0M 0% /run/lock tmpfs 16G 0 16G 0% /sys/fs/cgroup /dev/sda2 486M 191M 271M 42% /boot /dev/mapper/pve-data 317G 160G 157G 51% /var/lib/vz /dev/fuse 30M 36K 30M 1% /etc/pve tmpfs 3.2G 0 3.2G 0% /run/user/1000
root@host:~$ pvs PV VG Fmt Attr PSize PFree /dev/sda3 pve lvm2 a-- 464.75g 16.00g