When /boot is on btrfs, and the default subvolume is changed, it makes the system unbootable. The basic configuration is subvolumes: boot, root, home, on one btrfs volume single device. The installer doesn't change the default subvolume, it remains ID 5.
If I change the default subvolume and reboot, I get a grub rescue prompt. This means core.img in the MBR gap was found, but /boot/grub/i386-pc/normal.mod could not be found. What's interesting is, at the grub rescue prompt, 'set' returns: prefix=(hd0,msdos1)/boot/grub2 root=hd0,msdos1 This appears to be a full path name, so it should always start from top level regardless of the set-default subvolume, correct? Yet it's behaving relative to the default subvolume. If I use 'ls (hd0,msdos1)' I'm returned the contents of the subvolume I've set as default, which explains why bootability is broken. Chris Murphy-- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
