lookup_datastore failed - Permission denied (os error 13) errors

PMXUsername

New Member
Oct 28, 2020
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All my backups to Proxmox Backup Server are failing with permission denied errors and when I look at the /var/log/syslog, I see several lookup_datastore failed - Permission denied (os error 13) errors.

Permissions on the root datastore directory:
drwxr-xr-x 5 backup backup 4096 Oct 30 00:24 pmx-backup

I restarted both the Proxmox Backup Server and Proxmox VE nodes and that did not help either.
 
Last edited:
Hi,
what kind of underlying storage are you using for the datastore? If it's an NFS mount, you could try this solution.
 
Nope not NFS. Direct hard drives. I have it installed on dedicated machine with HDDs mounted in fstab - very basic setup.
 
Could you give us more details then?

From PBS:
  • the relevant entry from fstab
  • In case you're not backing up as root@pam, the output of proxmox-backup-manager acl list
  • a failed backup log (in the GUI in the upper right corner, click on Tasks > Show all tasks)
From PVE:
  • a failed backup log