Arch Linux

Lockheed

Member

Registered: 2010-03-16

Posts: 1,550

Problems with btrfs snapshot subvolumes

I had a btrfs setup with automatic snapshots, but I recently discovered it got messed up.

Folders

/.snapshots 
/var/cache/pacman/pkg

are empty.

However:

# btrfs subvolume list -p .
ID 267 gen 73907 parent 5 top level 5 path var/cache/pacman/pkg
ID 268 gen 76083 parent 5 top level 5 path .snapshots
ID 1098 gen 68772 parent 268 top level 268 path .snapshots/824/snapshot
ID 1122 gen 70781 parent 268 top level 268 path .snapshots/848/snapshot
ID 1146 gen 72778 parent 268 top level 268 path .snapshots/872/snapshot
ID 1162 gen 74082 parent 268 top level 268 path .snapshots/888/snapshot
ID 1163 gen 74087 parent 268 top level 268 path .snapshots/889/snapshot
ID 1171 gen 74271 parent 268 top level 268 path .snapshots/897/snapshot
ID 1195 gen 75868 parent 268 top level 268 path .snapshots/921/snapshot
ID 1196 gen 75887 parent 268 top level 268 path .snapshots/922/snapshot
ID 1197 gen 75901 parent 268 top level 268 path .snapshots/923/snapshot
ID 1198 gen 75917 parent 268 top level 268 path .snapshots/924/snapshot
ID 1199 gen 75933 parent 268 top level 268 path .snapshots/925/snapshot
ID 1200 gen 76082 parent 268 top level 268 path .snapshots/926/snapshot
ID 1201 gen 75966 parent 268 top level 268 path .snapshots/927/snapshot
ID 1202 gen 75982 parent 268 top level 268 path .snapshots/928/snapshot
ID 1203 gen 76001 parent 268 top level 268 path .snapshots/929/snapshot
ID 1204 gen 76043 parent 268 top level 268 path .snapshots/930/snapshot
ID 1205 gen 76070 parent 268 top level 268 path .snapshots/931/snapshot
ID 1206 gen 76081 parent 268 top level 268 path .snapshots/932/snapshot
ID 1207 gen 91944 parent 268 top level 268 path .snapshots/933/snapshot

So in order to recreate the whole setup, I try to delete empty subvolumes, but

# btrfs subvolume delete .snapshots
Transaction commit: none (default)
ERROR: error accessing '.snapshots'

# btrfs subvolume delete var/cache/pacman/pkg
Transaction commit: none (default)
ERROR: error accessing 'var/cache/pacman/pkg'

How can I get rid of those phantom subvolumes?

Last edited by Lockheed (2014-08-04 18:44:57)