Host disk full


New Member
Oct 23, 2022
I'm using Promox ve 8.
My host disk space is 100% full after a backup vm job tentative.
Now my host is in bad state, I cannot delete the backup (tmp) file via the UI ([VM]\Backup), "Loading" or an empty list is displayed.
The "Tasks" list is indicating that the VM backup job is still ongoing.
I can access to the host by ssh but I don't find any way to delete the files into /var/lib/vz/dump/ by using CLI:

root@pve21:~# ll /var/lib/vz/dump/
total 179805506
drwxr-xr-x 3 root root 4 Aug 16 05:00 .
drwxr-xr-x 7 root root 7 Aug 15 22:16 ..
drwxr-xr-x 2 root root 4 Aug 16 05:00 vzdump-qemu-102-2023_08_16-05_00_56.tmp
-rw-r--r-- 1 root root 183997153280 Aug 16 05:09 vzdump-qemu-102-2023_08_16-05_00_56.vma.dat

What is the solution?
I already tried to reboot the host.

Hello, what filesystem are you using? e.g. is this ext4+lvm, zfs, etc?
Ideally, you should never allow a ZFS drive to be close to 100%. To get yourself out of this situation you can delete a file with cat /dev/null > /path/to/big/file. If I am not mistaken that won't trigger a copy-on-write if the disk is at 100%.
Last edited:
it's not working :oops:

root@pve21:~# cat /dev/null > /var/lib/vz/dump/vzdump-qemu-102-2023_08_16-05_00_56.vma.dat
-bash: /var/lib/vz/dump/vzdump-qemu-102-2023_08_16-05_00_56.vma.dat: No space left on device
finally I just did:
rm -f /var/lib/vz/dump/vzdump-qemu-102-2023_08_16-05_00_56.vma.dat

My initial goal was to try to cancel the backup job and to remove the (tmp) files properly but apparently the only solution was to force the deletation manually.


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