# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-set -eE -o pipefail
-trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
+x="$(readlink -f "$BASH_SOURCE")"
+f="${x%/*}/bash-trace"
+if [[ -e $f ]]; then
+ source $f
+else
+ source ${x%/*}/../bash-trace/DEFAULT
+fi
[[ $EUID == 0 ]] || exec sudo "$BASH_SOURCE" "$@"
With no argument, print available distros
DISTRO_NAME is based on the partition names in /boot.
-For example debianjessie for the partitionn boot_debianjessie.
+For example, boot_debianjessie.
+
+For a system without libreboot, which is failing completely to
+boot on one distro, here is how I did a chboot for it:
+# arch-pxe had been run previously
+pxe-server some_hostname arch
+# reboot some_hostname into arch live env
+pxe-server # disable pxe server
+ssh root@some_hostname
+lsblk # identify boot dev. if boot dev is a raid, this could be repeated on all boot devs.
+mount /dev/sdd3 /mnt
+mount_point=/mnt/boot_debiantesting # the subvol i want to chboot to
+boot_disk=/dev/sdd
+grub-bios-setup -d $mount_point/grub/i386-pc -s -m $mount_point/grub/device.map $boot_disk
+reboot
+
+todo: figure out if it's possible to make a multi-distro grub like I have with libreboot
+for non-libreboot systems
-r Do not reboot.
-d Enable debug output.
distro=$1
+mnt=/boot
+if ! mountpoint $mnt &>/dev/null; then
+ mnt=/
+fi
+
if [[ ! $distro ]]; then
echo "available distros:"
- cur=$(btrfs subvol show /boot| sed -rn 's/^.*Name:\s*(\S*).*/\1/p')
- btrfs subvolume list /boot | awk '{print $9}' | sed "s/$cur/$cur (current)/"
+ cur=$(btrfs subvol show $mnt| sed -rn 's/^.*Name:\s*(\S*).*/\1/p')
+ btrfs subvolume list $mnt | awk '{print $9}' | sed "s/$cur/$cur (current)/"
exit 0
fi
#### begin initial error checking #####
-if ! btrfs subvolume list /boot | grep "_$distro$" &>/dev/null; then
- echo "$0: error: _$distro$ not found in btrfs subvolume list /boot:"
- btrfs subvolume list /boot
+if ! btrfs subvolume list $mnt | grep "$distro$" &>/dev/null; then
+ echo "$0: error: $distro not found in btrfs subvolume list $mnt:"
+ btrfs subvolume list $mnt
exit 1
fi
e() { echo "$@"; "$@"; }
-boot_dev=$(mount | sed -rn "s#^(\S+) on /boot .*#\1#p")
+boot_dev=$(mount | sed -rn "s#^(\S+) on $mnt .*#\1#p")
mount_point=$(mktemp -d)
-e mount -o subvol=boot_$distro $boot_dev $mount_point
+e mount -o subvol=$distro $boot_dev $mount_point
boot_disk=${boot_dev%%[0-9]*}
# https://www.gnu.org/software/grub/manual/html_node/Device-map.html
e grub-bios-setup -d $mount_point/grub/i386-pc -s -m $mount_point/grub/device.map $boot_disk
-# todo, mount_point needs subvolid=0
-
e umount $mount_point
e mount $boot_disk$grub_extn $mount_point
-e grub-editenv $mount_point/grubenv set last_boot=/boot_$distro
+e grub-editenv $mount_point/grubenv set last_boot=/$distro
e grub-editenv $mount_point/grubenv set did_fai_check=true
e umount $mount_point
e rmdir $mount_point