directory is expected to be a mount point but is not mounted


New Member
Jul 8, 2019
I am new to proxmox,
Recently I have mounted a directory which is not visible after reboot.
now I got the error :
TASK ERROR: unable to activate storage 'disc_images' - directory is expected to be a mount point but is not mounted: '

the storage.cfg is following

could you help me to to sort it out?
how do you mount /mnt/pve/disc_images ?

how did you create it ?(with the gui?, if yes what settings did you make there?)
I had created it via gui only. Tt is visible in gui but not mounted

in fdisk -l hdd/partition is also visible
ok there should a systemd-mount service

what does
systemctl status mnt-pve-disc_images.mount
Found the discrepancy in the configurations.

Proxmox try to mount /dev/disk/by-uuid/8342a29c-cd1c-4472-94b6-45fd0989b082

According to fdisk identifier is “Disk identifier: E8AC2337-E89A-4022-B656-03EBE59A5C47

How does change it in proxmox?

I am still puzzled how it could happened – all actions had been made in GUI ( no CLI)
what does it say if you do:
mount /dev/disk/by-uuid/8342a29c-cd1c-4472-94b6-45fd0989b082 /mnt/pve/disk_images

also a
ls -lh /dev/disk/by-uuid/
can help

you can edit the service with your favorite editor e.g.
  • Like
Reactions: spanish
There you are - no positive effect
moreover the fdisk and ls -lh /dev/disk/by-uuid/ different identifiers

oh i misspelled, try:

mount /dev/disk/by-uuid/8342a29c-cd1c-4472-94b6-45fd0989b082 /mnt/pve/disc_images
mount /dev/disk/by-uuid/8342a29c-cd1c-4472-94b6-45fd0989b082 /mnt/pve/disc_images

does not work.

I have reinstalled proxmox 5.4 manually configured
and then it worked.

After reboot i need to mount it again manually.

Does Proxmox uses the standard debian mount via
or is it the other propertary way?
I have the same problem with an external USB Drive, which is connected to a sever and it should serve as Backup drive for both servers.

On the one, where it is attached directly I can access the Backup section on the other one I am getting the error message.


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I've just encountered a similar issue, I had a USB drive (completely blank). I created it via the GUI and added it as a backup drive. It took a full backup of a VM last night and then this morning randomly "unmounted".

I think manually creating the mount in /etc/fstab using UUID (lsblk and blkid to make sure i have the correct drive and UUID) before using it in the Proxmox GUI is the way to go because I also did that with another drive and that's working fine.

I suspect this is an issue more likely to affect removable devices. What I think triggered it in my case is I had temporarily mounted a /dev/sdb and the backup drive was /dev/sdc I unmounted and removed the /dev/sdb and the backup drive has now been assigned /dev/sdb instead of /dev/sdc
Same happened to me now. USB backup drive (added to Proxmox as a backup drive via GUI) is randomly unmounted.


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