Change owner:group on mounted

I running lxd version 4.15 on ubuntu 20.
I mount a disk from source. The owner and group is nobody:nogroup, how to change it?

Try setting shift=true on the disk device, see Instances | LXD

What i did was:
snap set lxd shiftfs.enable=true
lxc config device add my-lxd backup disk source=/mnt/Backup/ path=/Backup

do you mean
lxc config device add my-lxd backup disk shift=true source=/mnt/Backup/ path=/Backup
?

Yes that’s why I linked to the disk device section of the docs where this feature setting is documented.

yes it working Thanks