need help fixing backup to new PBS

[kitkat]

i have a running PVE 8.4 and just finished setting up a new PBS.
Trying to setup the PBS as a backup and all seems fin until i try to do a backup:


Task viewer: VM/CT 105 - Backup

OutputStatus

Stop

Download
INFO: starting new backup job: vzdump 105 --mailto *@*.com --storage PBS --fleecing 0 --mailnotification always --notes-template '{{guestname}}' --all 0 --mode stop --node proxmox-dell
INFO: Starting Backup of VM 105 (qemu)
INFO: Backup started at 2025-05-23 18:12:21
INFO: status = stopped
INFO: backup mode: stop
INFO: ionice priority: 7
INFO: VM Name: SVR-SITE1
INFO: include disk 'scsi0' 'local:105/vm-105-disk-0.qcow2' 40G
INFO: creating Proxmox Backup Server archive 'vm/105/2025-05-23T22:12:21Z'
INFO: starting kvm to execute backup task
ERROR: VM 105 qmp command 'backup' failed - backup connect failed: command error: namespace not found
INFO: aborting backup job
INFO: stopping kvm after backup task
ERROR: Backup of VM 105 failed - VM 105 qmp command 'backup' failed - backup connect failed: command error: namespace not found
INFO: Failed at 2025-05-23 18:12:24
INFO: Backup job finished with errors
INFO: notified via target `<*@*.com>`TASK ERROR: job errors


I dont' uunderstand what this means. In the PBS, the datastore that is setup via NFS looks fine. but when I go to the PBS datastore from the PVE server i get this:


I can't seem to find and resolve this issue.

all looks fine from the summary page:

 

[SteveITS]

Not sure of your bad request error, but re: namespace, I had a similar problem drive me bananas for a while, and IIRC it was because I was using a slash...don't use /namespace/level2, use namespace/level2.

 

[kitkat]

That’s the other issue, I don’t know what it needs for namespace. What and where should I get this?

 

[SteveITS]

you don't need one, did you try to enter one? maybe in your case it's the same problem as the error.

 

[kitkat]

No, for namespace I had to enter something else I could not save

 

[SteveITS]

Hmm ok not near a PC to check what I did back then

 

[kitkat]

i redid the PBS as a VM on the PVE with attached NFS using the following insctructions YT video and all worked fine. I think it's probably because I installed the PBS manually and did not have the correct permissions and backup user names or something like that.

https://youtu.be/qms3ffm8H_4?si=KgzzPJnHxwfWwmlz