Ubuntu
apt-btrfs-snapshot package

  1. Bug #1870482
  2. Comment #4

Comment 4 for bug 1870482

Revision history for this message
Kent Ross (mumbleskates) wrote :

i ran into this and figured out what it was.

apt-btrfs-snapshot makes several assumptions when it operates, not all of which are checked:

1. / is mounted from a btrfs device subvolume named /@
2. the btrfs filesystem on that device will mount the root filesystem, inside which @ resides.

1. is checked by "supported" by looking in fstab and ensuring that subvolid=@ is *explicitly* specified, 2. is not checked at all. if your volume root mounts @ as the default subvolume it's not gonna work!