@AvitarX LZO compression is not a red herring. It only appears to happen if you have a separate btrfs file-system from root AND you have balanced it (must be some difference between the way the root filesystem and home filesystems are checked on boot).
So steps to reproduce are:-
1. Fresh install of Natty with /boot as EXT4, / as BTRFS and /home as BTRFS.
2. Change mount options in /etc/fstab to include "compress=lzo".
3. Remount (mount -o remount /home) or reboot.
4. Balance filesystem "btrfs fi balance /home" and bingo borked btrfsck :)
@AvitarX LZO compression is not a red herring. It only appears to happen if you have a separate btrfs file-system from root AND you have balanced it (must be some difference between the way the root filesystem and home filesystems are checked on boot).
So steps to reproduce are:-
1. Fresh install of Natty with /boot as EXT4, / as BTRFS and /home as BTRFS.
2. Change mount options in /etc/fstab to include "compress=lzo".
3. Remount (mount -o remount /home) or reboot.
4. Balance filesystem "btrfs fi balance /home" and bingo borked btrfsck :)