Can not change root size by sudo lxc config device set

LXD
,
1

I try to config a VM on my server which i do alot. this time i have a strange problem. firstly : i can see no root size when i chack my VM’s config by : sudo lxc config show <vm name>.
secondly: i try to set root size for it, but i face with this error:

_❯ sudo lxc config device set builder root size=500GB
Error: Failed to update device "root": Failed to run: btrfs qgroup create 0/257 /var/lib/lxd/storage-pools/builder/virtual-machines/builder: exit status 1 (ERROR: unable to create quota group: File exists)_

i deactivate btrfs quota by : sudo btrfs quota disable
but the problem still exist.

i would be thankful if you can help me

2

You would use lxc config device override containernamehere root size=300TiB , if there is no size defined for it, yet.

3

I get this error :
Error: The device already exists

4

Then you can use lxc config device set ... instead if the device is already part of the instance’s config.

5

What host OS are you using?

It sounds like you could be affected by a BTRFS upstream change:

6

Thanks for the reply,
i already tried config device set and it didn’t work too.
i am using Arch-linux.
my problem can be related to the ticket that you mention here. i have nothing in
/var/lib/lxd/storage-pools/builder/images directory.