I have Fedora 20 and when I installed it I choose to go with btrfs as file system, by many reasons but mainly to have snapshots available.
But I can't seem to create a snapshot of
/. I can snapshot my home folder (which also is btrfs) like this
btrfs subvolume snapshot /home/ /snap/home, but when I try to snapshot
/ by writing
btrfs subvolume snapshot / /snap it just outputs
ERROR: incorrect snapshot name ('/').
I am sure that / is btrfs.
Listing subvolumes outputs:
# btrfs subvolume list / ID 256 gen 9562 top level 5 path home ID 258 gen 9562 top level 5 path root ID 306 gen 9517 top level 258 path snap/home/2014-08-15_00:44:00
Is it not possible to snapshot the root folder, even if it is using btrfs?