I have an Arch Linux Installation on a btrfs filesystem partition "/dev/sda1":
[root@larch ~]# mount | grep sda /dev/sda1 on / type btrfs (rw,relatime,ssd,space_cache,subvolid=266,subvol=/subvol_root)
As you can see, I do not mount the root volume but a subvolume called "subvol_root". When I mount the whole partition to
/root/BTRFSROOT, you can see the current subvolumes:
[root@larch ~]# pwd /root [root@larch ~]# mount -o subvol=/ /dev/sda1 BTRFSROOT/ [root@larch ~]# btrfs sub list -apt BTRFSROOT/ ID gen parent top level path -- --- ------ --------- ---- 257 3239 5 5 subvol_root_borked 264 3350 5 5 snapshots 266 3358 5 5 subvol_root 267 3223 264 264 <FS_TREE>/snapshots/20190103-fresh-arch 268 302 264 264 <FS_TREE>/snapshots/20190104-pre-graphics 272 2275 264 264 <FS_TREE>/snapshots/20190106-pre-intel-driver 276 3250 264 264 <FS_TREE>/snapshots/20190107-pre-vbox [root@larch ~]#
I want to get rid of the
subvol_root_borked, but I get the following error:
[root@larch ~]# btrfs sub delete BTRFSROOT/subvol_root_borked/ Delete subvolume (no-commit): '/root/BTRFSROOT/subvol_root_borked' ERROR: Could not destroy subvolume/snapshot: Operation not permitted [root@larch ~]#
I created the
subvol_root_borked by making a snapshot of
subvol_root, but I have renamed it since the creation. I don't know the original snapshot name anymore. It may have also been initially created under the
snapshots subvolume, but I'm not sure about that.
I was able to delete all of the contents within the subvolume, however:
[root@larch ~]# ls -lah BTRFSROOT/subvol_root_borked/ total 16K drwxr-xr-x 1 root root 0 Jan 7 20:13 . drwxr-xr-x 1 root root 94 Jan 4 00:24 ..
What is the problem with this subvolume / how can I further analyse this issue?