Openhab backup command unable to write files to NFS directory on Linux

I've got a folder on my OMV, shared with NFS:

On another Linux machine, I've got openHAB running. And I want to have that system store backup files on my NAS.

At first I tried the system native command on a non-mounted folder, which worked. But when I mount the folder, it doesn't work...

This first worked:

erik@MinipcLG2:~$ sudo /usr/bin/openhab-cli backup /home/erik/Openhab-backups/openhab-$(date +%A).zip

Then I did this:

erik@MinipcLG2:/$ sudo mount -t nfs 192.168.1.10:/openHAB-backup /home/erik/Openhab-backups/
erik@MinipcLG2:/$ sudo /usr/bin/openhab-cli backup /home/erik/Openhab-backups/openhab-$(date +%A).zip

Using '/etc/openhab' as conf folder...
Using '/var/lib/openhab' as userdata folder...
Using '/usr/share/openhab/runtime' as runtime folder...
Unable to locate specified directory '/home/erik/Openhab-backups'

Here you can see the permissions:

erik@MinipcLG2:~$ ls -l
totaal 36
drwxr-xr-x 2 erik erik  4096 nov 17 10:17  Afbeeldingen
drwxr-xr-x 2 erik erik  4096 nov 17 10:17  Bureaublad
drwxr-xr-x 2 erik erik  4096 mrt  5 22:50  Documenten
drwxr-xr-x 2 erik erik  4096 mrt  7 18:00  Downloads
drwxr-xr-x 2 erik erik  4096 nov 17 10:17  Muziek
drwxr-xr-x 2 erik erik  4096 nov 17 10:17  Openbaar
drwxrws--- 2 root users 4096 mrt  8 20:26  Openhab-backups
drwxr-xr-x 2 erik erik  4096 nov 17 10:17  Sjablonen
drwxr-xr-x 2 erik erik  4096 feb 16 23:20 "Video's"

Does anyone have a clue what the problem is here?

Zitat von Krisbee

Use

Code

sudo mount -t nfs 192.168.1.10:/openHAB-backup /home/erik/Openhab-backups

I'll try that later today.

I forgot to add that writing to the mounted directory is possible.

I tested that: I copied a file manually, both via the GUI as via command line. I then checked whether these files are visible through the SMB connection to my Windows laptop, which was the case.

No change...

Zitat von Krisbee

Change the NFS extra options to include "no_root_squash"

I read the same suggestion on the openHAB forum tonight, so I was certain this would do the trick.

Alas:

Zitat

erik@MinipcLG2:~$ sudo mount -t nfs 192.168.1.10:/openHAB-backup /home/erik/Openhab-backups/

erik@MinipcLG2:~$ sudo /usr/bin/openhab-cli backup /home/erik/Openhab-backups/openhab-$(date +%A).zip

Using '/etc/openhab' as conf folder...

Using '/var/lib/openhab' as userdata folder...

Using '/usr/share/openhab/runtime' as runtime folder...

Unable to locate specified directory '/home/erik/Openhab-backups'

Alles anzeigen

Or do I need to reboot my OMV server?

Zitat von Krisbee

You can check if "root" on Minipc can write to your nfs mount with:

sudo touch /home/erik/Openhab-backups/

sudo ls -l /home/erik/Openhab-backups/

sudo rm touch /home/erik/Openhab-backups/

That was possible...

But I went about it another way: I installed a rsync job (using this help: RE: Rsync pull - Host key verification failed, thanks RonO & Itookmyprozac!).

So although the actual problem isn't solved, my 'needs' are met.

Thanks everyone to chime in!

Zitat von Krisbee

Can't a non-root user invoke openhab-cli?

I assume that's possible. But would that offer possibilities that sudo doesn't?

Zitat von Krisbee

Just run it and see what happens.

erik@MinipcLG2:/$ /usr/bin/openhab-cli backup /home/erik/Openhab-backups/openhab-$(date +%A).zip

Please run this script as root! (e.g. use sudo)