VM Backup

Andrei Egi

New Member
Oct 22, 2018
Hello, I'm trying to make a manual backup to a VM by copying the config file and the disks to another location.
When I restore and try to copy the disk image back to /dev/pve I get "disk is full" error even if I have over 700 Gb free, can you please help me with this problem?Thank you
Why you doesn't use the backup and restore feature? At a restore you can choose a new storage path.

Regarding the manual copy, maybe you copy the file to the disk? (/dev/pve) and not to the partition, volume at the disk?

in order to help you we need a bit more information. Can you provide the output of:
df -h
cat /etc/pve/storage.cfg
lvs; pvs; vgs

How exactly do you copy the disk image? What storage backend do you use, what image format?
Also as @Duckdave stated correctly, why not use the tools PVE provides?
Hello, just trying to understand a little bit better how Proxmox works, where are the key vm files stored, and how to manually back-up and restore them from another location like a NAS.
I'm also new to LVM and I think here is the problem, please check the information below
Basically when I tried to restore the disk file (root@pve:/sftp/data/vm_108_bk/vm-108-disk-0, raw disk image) to /dev/pve (here was initially) I get the disk is full error.

root@pve:/home/andrei# df -h
Filesystem            Size  Used Avail Use% Mounted on
udev                   12G     0   12G   0% /dev
tmpfs                 2.4G  9.0M  2.4G   1% /run
/dev/mapper/pve-root   94G   54G   36G  61% /
tmpfs                  12G   25M   12G   1% /dev/shm
tmpfs                 5.0M     0  5.0M   0% /run/lock
tmpfs                  12G     0   12G   0% /sys/fs/cgroup
/dev/sdb1             440G   56G  362G  14% /mnt/disk2
/dev/sdd1             3.6T  975G  2.5T  28% /mnt/disk4
/dev/sdc1             3.6T   89M  3.4T   1% /mnt/disk3
/dev/fuse              30M   20K   30M   1% /etc/pve

root@pve:/home/andrei# cat /etc/pve/storage.cfg
dir: local
        path /var/lib/vz
        content vztmpl,backup,iso

lvmthin: local-lvm
        thinpool data
        vgname pve
        content images,rootdir

dir: disk2
        path /mnt/disk2
        content images
        shared 0

dir: disk4
        path /mnt/disk4
        content images
        shared 0

dir: disk3
        path /mnt/disk3
        content images
        shared 0

root@pve:/home/andrei# lvs
  LV            VG  Attr       LSize   Pool Origin Data%  Meta%  Move Log Cpy%Sync Convert
  data          pve twi-aotz-- 795.77g             0.00   0.04
  root          pve -wi-ao----  96.00g
  swap          pve -wi-ao----   7.00g
  vm-115-disk-0 pve Vwi-a-tz--  16.00g data        0.00
  vm-115-disk-1 pve Vwi-a-tz--  32.00g data        0.00

root@pve:/home/andrei# pvs
  PV         VG  Fmt  Attr PSize   PFree
  /dev/sda3  pve lvm2 a--  931.01g 16.00g

root@pve:/home/andrei# vgs
  VG  #PV #LV #SN Attr   VSize   VFree
  pve   1   5   0 wz--n- 931.01g 16.00g


The Proxmox community has been around for many years and offers help and support for Proxmox VE, Proxmox Backup Server, and Proxmox Mail Gateway.
We think our community is one of the best thanks to people like you!

Get your subscription!

The Proxmox team works very hard to make sure you are running the best software and getting stable updates and security enhancements, as well as quick enterprise support. Tens of thousands of happy customers have a Proxmox subscription. Get yours easily in our online shop.

Buy now!