/dev/mapper/pve-root size question

[lk777]

I am trying to figure out what is shown as used space in the output of du -Ha for /dev/mapper/pve-root

root@pve-1:~# pveversion -v
proxmox-ve: 7.2-1 (running kernel: 5.15.60-1-pve)
pve-manager: 7.2-11 (running version: 7.2-11/b76d3178)
pve-kernel-helper: 7.2-12
pve-kernel-5.15: 7.2-11
pve-kernel-5.13: 7.1-9
pve-kernel-5.15.60-1-pve: 5.15.60-1
pve-kernel-5.15.53-1-pve: 5.15.53-1
pve-kernel-5.13.19-6-pve: 5.13.19-15
ceph-fuse: 15.2.15-pve1
corosync: 3.1.5-pve2
criu: 3.15-1+pve-1
glusterfs-client: 9.2-1
ifupdown2: 3.1.0-1+pmx3
ksm-control-daemon: 1.4-1
libjs-extjs: 7.0.0-1
libknet1: 1.24-pve1
libproxmox-acme-perl: 1.4.2
libproxmox-backup-qemu0: 1.3.1-1
libpve-access-control: 7.2-4
libpve-apiclient-perl: 3.2-1
libpve-common-perl: 7.2-2
libpve-guest-common-perl: 4.1-2
libpve-http-server-perl: 4.1-3
libpve-storage-perl: 7.2-9
libspice-server1: 0.14.3-2.1
lvm2: 2.03.11-2.1
lxc-pve: 5.0.0-3
lxcfs: 4.0.12-pve1
novnc-pve: 1.3.0-3
proxmox-backup-client: 2.2.6-1
proxmox-backup-file-restore: 2.2.6-1
proxmox-mini-journalreader: 1.3-1
proxmox-widget-toolkit: 3.5.1
pve-cluster: 7.2-2
pve-container: 4.2-2
pve-docs: 7.2-2
pve-edk2-firmware: 3.20220526-1
pve-firewall: 4.2-6
pve-firmware: 3.5-3
pve-ha-manager: 3.4.0
pve-i18n: 2.7-2
pve-qemu-kvm: 7.0.0-3
pve-xtermjs: 4.16.0-1
qemu-server: 7.2-4
smartmontools: 7.2-pve3
spiceterm: 3.2-2
swtpm: 0.7.1~bpo11+1
vncterm: 1.7-1
zfsutils-linux: 2.1.5-pve1

du -hsxc /* | sort -h

root@pve-1:~# du -hsxc /* | sort -h
0       /bin
0       /dev
0       /lib
0       /lib32
0       /lib64
0       /libx32
0       /proc
0       /sbin
0       /sys
512     /zfsa
512     /zfsb
4.0K    /home
4.0K    /media
4.0K    /opt
4.0K    /srv
4.0K    /webmin-setup.out
16K     /lost+found
16K     /mnt
64K     /tmp
1.7M    /run
6.5M    /etc
36M     /root
247M    /boot
3.1G    /var
4.6G    /usr
7.9G    total

lsblk

nvme0n1      259:0    0 465.8G  0 disk
├─nvme0n1p1  259:1    0  1007K  0 part
├─nvme0n1p2  259:2    0   512M  0 part /boot/efi
├─nvme0n1p3  259:3    0  39.5G  0 part
│ ├─pve-swap 253:0    0   4.9G  0 lvm  [SWAP]
│ └─pve-root 253:1    0  34.6G  0 lvm  /
└─nvme0n1p4  259:4    0   390G  0 part

lsblk -f



25GB vs 8GB of the used space is a bit confusing for me.

 

[lk777]

One of the host backups has been misplaced for some reason. Instead of the NFS share it was stored in /mnt /.... directly. I found it by mounting /dev/mapper/pve-root into the created temporary directory.