[lxc-users] Why I cannot remove this (emtpy) directory ?

[Pierre Couderc]

root at server:~/ls# ls -lha 
/var/lib/lxd/storage-pools/default/containers/ajeter/
total 0
drwx--x--x 1 root root  0 Sep 22 15:17 .
drwxr-xr-x 1 root root 12 Sep 23 07:09 ..
root at server:~/ls# rmdir 
/var/lib/lxd/storage-pools/default/containers/ajeter/
rmdir: failed to remove 
'/var/lib/lxd/storage-pools/default/containers/ajeter/': Operation not 
permitted
root at server:~/ls#

....???

PC