SSHFS Storage as Datastore

[Fuggschen]

Heyho I have a problem.
I have a StorageBox from Hetzner and wanted to use it as a Datastore for my PBS. I mounted it via SSHFS with following entry in /etc/fstab:

uXXXXXX@uXXXXXX.your-storagebox.de:~/ /mnt/storagebox fuse.sshfs noauto,x-systemd.automount,_netdev,reconnect,identityfile=/root/.ssh/id_rsa,allow_other,default_permissions,uid=0,gid=0 0 0

Then I tried to mount it in PBS but i get this error: EACCES: Permission denied

I already tried to change the folder permissions from the StorageBox user to backup and to root as you can see right now but both gives me the permission error.
I can normally write to the mount and delete with root and permissions are set to 766.

Do I miss something? Or is SSHFS not compatible?

 

[gurubert]

Or is SSHFS not compatible?

It may be technically compatible if you can solve the permission problem.
But be aware: Proxmox recommends to use local SSD storage for the PBS. My own experience is that even HDDs are too slow for this system.

 

[Fuggschen]

It may be technically compatible if you can solve the permission problem.
But be aware: Proxmox recommends to use local SSD storage for the PBS. My own experience is that even HDDs are too slow for this system.

Yeah I would need help with the permission problem. On my side everything looks fine.

And I had a home-NAS with some HDDs that worked "fine". Not very fast but it worked

 

[gurubert]

When I tried your fstab-line the mount command complained about the allow_others option. Everything else worked.

Are you sure that ~/ is a valid path on the remote server? Try to configure it with the full path.

 

[Fuggschen]

When I tried your fstab-line the mount command complained about the allow_others option. Everything else worked.

Are you sure that ~/ is a valid path on the remote server? Try to configure it with the full path.

Oh yes sorry. It's allow_other. I just modified it and copied the new command and added the option by hand back in.

And the official documentation to the storagebox says, that I should use relative paths. But I tested it with /backups (a folder that I created with the same permissions) and it also won't work

 

[gurubert]

I think it is time to ask the Hetzner support.

 

[Fuggschen]

Hetzner support "solved" the problem.
I still don't know exactly why this happens but it seems to be some sort of permission preservation issue between PBS and the StorageBox.

Solution for now was to create a Datastore locally and move the .lock and .chunks manually to the desired location and changing the /etc/proxmox-backup/datastore.cfg to the new path. Backups now get saved without problems and it's surprisingly fast (alot faster than WebDAV or SMB).

This is the final /etc/fstab entry:

uXXXXXX@uXXXXXX.your-storagebox.de:/ /mnt/storagebox fuse.sshfs port=22,noauto,x-systemd.automount,_netdev,reconnect,identityfile=/root/.ssh/id_rsa,allow_other,uid=34,gid=34 0 0

Last error is that it shows wrong Usage numbers. I have at the moment a StorageBox with 100GB capacity but PBS shows me 27.49 TB of usable space (would be nice if true) and the used space fills rapidly (backed up 7GB but filled ~2TB of storage)
But df -h shows me the right numbers:
uXXXXXX@uXXXXXX.your-storagebox.de:/ 100G 21G 80G 21% /mnt/storagebox