Bug when adding new storage? TASK ERROR: datastore path is not empty

[Flappie]

Hello,

Did a clean install of Proxmox Backup Server.
Then, installed all available updates from no-subscription repo.

Then, added a new disk (running PBS on Proxmox VE).
I initialized the disk.
Added a "Directory" and enabled the option to add it as a datastore and getting this error: "TASK ERROR: datastore path is not empty"

The mound point is actually created but contains a default folder "lost+found" that causes this error.
When i removed the folder, i was able to add de datastore manually.

Is this normal behaviour of PBS?

 

[Neobin]

Might have to do with:

Disallow creating datastores in non-empty directories.

https://git.proxmox.com/?p=proxmox-backup.git;a=commit;h=6e101ff75777ed1330df3cc296abe9131140c54d
and/or:

Disallows creating a datastore in root on the frontend side, by filtering the '/' path.

https://git.proxmox.com/?p=proxmox-backup.git;a=commit;h=f2ea424cc1d322321eaf2f429b4aea57841e889a
?

Kindly pinging: @ggoller

 

[ggoller]

Thanks for the heads-up! You're right, we only ignore files starting with a dot. Submitted this patch, which should fix it: https://lore.proxmox.com/pbs-devel/20241119161725.519650-1-g.goller@proxmox.com/T/#u.

 

[Flappie]

Thanks for the heads-up! You're right, we only ignore files starting with a dot. Submitted this patch, which should fix it: https://lore.proxmox.com/pbs-devel/20241119161725.519650-1-g.goller@proxmox.com/T/#u.

Thank you. So this is already a known issue. I did a clean install of PBS 3.2.1 without updating it first. Then everything went fine so it looks like some of the latest updates created the lost+found dir when creating a directory from the gui.

 

[ggoller]

As far as I know we don't create a lost+found directory – but they are often created by ext3/4 and fsck.

 

[Sim-Marzio]

I've found a workaround for this problem:
You create the datastore normally ultil the error "TASK ERROR: datastore path is not empty" so the mount is mapped to the new disk.
Navigate into /mnt/datastore/'datastore_name'
and eliminate the folder lost+found with: rmdir ./lost+found/
Then from command line you give the command:
proxmox-backup-manager datastore create 'datastore_name' /mnt/datastore/'datastore_name'
It should give you the new datastore in the new disk.

 

[ggoller]

This will be fixed in the next release which should be out shortly!

 

[Phoenix85]

When will that release come out?

 

[ggoller]

It's already out with PBS 3.3: https://pbs.proxmox.com/wiki/index.php/Roadmap#Proxmox_Backup_Server_3.3

 

[quasarti]

Well, this is not solved in PBS 3.3.3:

 

[TROYa]

Mount the disk, and then fill in the /etc/proxmox-backup/datastore.cfg file. You should get something like:
datastore: Backup
notify gc=error,prune=error,sync=error,verify=error
path /mnt/backup
Save the modified file and the datastor will appear