[SOLVED] PBS with datastore on NFS

[Fug1]

I know there have been a lot of posts about this, but I'm still struggling.

I have a new PBS instance started up running 3.2-2. I have a FreeNAS/TrueNAS server with an NFS share set up for my backups.

I have mounted the NFS share using /etc/fstab under /mnt/backups in PBS. I have verified that I can write to this folder on PBS with both root and backup users. To test writing as the backup user, I added a shell for the backup user under /etc/passwd and switched to backup user with 'su - backup'.

Still, when I attempt to add a datastore under PBS on the NFS mounted directory, I get "EPERM: Operation not permitted". I guess this must be a permissions issue, but I can write with the backup user. Are there any logs that can provide more detail about this error?

Thank you.

 

[Fug1]

I solved this by setting no_root_squash on the NFS share. Apparently in FreeNAS/TrueNAS you do this by setting the maproot user to 'root' and the maproot group to 'wheel' on the NFS share. https://www.truenas.com/community/t...-root_squash-no_root_squash-on-freenas.80024/

 

[Moayad]

Hi,

I'm glad to hear that you solved the issue yourself!

I will go ahead and set your thread as [SOLVED] in order to help other people who have the same issue.

 

[tcabernoch]

OP is going way with a bad solution. How is that "Solved"?

@Fug1 Have you seen the testing to indicate that this is the very worst way to mount storage for PBS?

This thread is a bit contentious.
https://forum.proxmox.com/threads/datastore-performance-tester-for-pbs.148694/

The guy that wrote the script is trying to make the point that what you are doing is wrong.
There's some messy discussion there, but I think they proved their point.
Anything other than an NFS mount.
If you have to use that storage and that server, connect them with ISCSi instead.

PS ... Maybe it's time for @Der Harry to have another say about this.

 

[Fug1]

This is just a small home system. NFS performance is sufficient for my use case.