swapn=2
bootn=3
# ext partition so grub can write persistent variables,
-# so it can do a one time boot.
+# so it can do a one time boot. grub can't write to
+# btrfs or any cow fs because it's more
+# more complicated to do and they don't want to.
grub_extn=4
# bios boot partition,
# https://wiki.archlinux.org/index.php/GRUB
bios_grubn=5
lastn=$bios_grubn
-boot_mib=4000
+# this is larger than needed for several /boot subvols,
+# becuase I keep a minimal debian install on it, for
+# recovery needs, and for doing pxe-kexec.
+boot_mib=10000
##### end configuration
rootdev() { add-part $@ $rootn; }
swapdev() { add-part $@ $swapn; }
grub_extdev() { add-part $@ $grub_extn; }
-# Commented because it's not used, but left because it
-# finishes the pattern and if we ever do need to use it, it's here.
-#bios_grubdev() { add-part $@ $bios_grubn; }
+bios_grubdev() { add-part $@ $bios_grubn; }
crypt-dev() { echo /dev/mapper/crypt_dev_${1##*/}; }
crypt-name() { echo crypt_dev_${1##*/}; }
done
# install all ssds, or if there are none, all hdds
-if (( ${#ssds[@]} > 0 )); then
+if ! ifclass ROTATIONAL && (( ${#ssds[@]} > 0 )); then
short_devs=( ${ssds[@]} )
else
short_devs=( ${hdds[@]} )
for dev in ${short_devs[@]}; do
if $partition; then break; fi
y=$(readlink -f $dev)
- x=($y[0-9])
- [[ ${#x[@]} == "${lastn}" ]] || partition=true
+ arr=($y[0-9])
+ [[ ${#arr[@]} == "${lastn}" ]] || partition=true
for (( i=1; i <= lastn; i++ )); do
[[ -e ${dev}$i ]] || partition=true
done
fi
done
+if ifclass RAID0 || (( ${#boot_devs[@]} < 4 )); then
+ raid_level=0
+else
+ raid_level=10
+ # need double the space if we are raid 10, and then
+ # might as well give some extra.
+ boot_mib=$((boot_mib * 3))
+fi
+
+
+
if [[ ! $DISTRO ]]; then
- if ifclass STABLE_BOOTSTRAP; then
+ if ifclass VOL_STABLE_BOOTSTRAP; then
DISTRO=debianstable_bootstrap
- elif ifclass STRETCH64; then
+ elif ifclass VOL_STRETCH; then
DISTRO=debiantesting
- elif ifclass STABLE; then
+ elif ifclass VOL_STABLE; then
DISTRO=debianstable
- elif ifclass XENIAL64; then
+ elif ifclass VOL_XENIAL; then
DISTRO=ubuntuxenial
- elif ifclass BELENOS64; then
+ elif ifclass VOL_BELENOS; then
DISTRO=trisquelbelenos
else
echo "PARTITIONER ERROR: no distro class/var set" >&2
first_boot_dev=${boot_devs[0]}
-case ${#boot_devs[@]} in
- # need double the space if we are raid 10, and then
- # might as well give some extra overhead.
- [4-9]*|[1-3]?*) boot_mib=$((boot_mib * 3)) ;;
-esac
-
-
bpart() { # btrfs a partition
- case ${#@} in
- [1-3]) mkfs.btrfs -f $@ ;;
- [4-9]*|[1-3]?*) mkfs.btrfs -f -m raid10 -d raid10 $@ ;;
+ case $raid_level in
+ 0) mkfs.btrfs -f $@ ;;
+ 10) mkfs.btrfs -f -m raid10 -d raid10 $@ ;;
esac
}
shopt -s nullglob
if $partition; then
for dev in ${devs[@]}; do
- for x in $dev[0-9]; do
+ # if we repartition to the same as an old partition,
+ # we don't want any old fses hanging around.
+ for (( i=1; i <= lastn; i++ )); do
+ x=$(add-part $dev $i)
+ [[ -e $x ]] || continue
count_down=10
# wipefs has failed, manual run works, google suggests timing issue
while ! wipefs -a $x; do
cd /mnt
btrfs subvolume create root_$DISTRO
- [[ -e q ]] || btrfs subvolume create q
- chown root:1000 q
mkdir -p /mnt/root_$DISTRO/boot
- for x in q/a q/i; do
- mkdir -p $x
- chown 1000:1000 $x
- chmod 755 $x
- done
- # could set default like this, but no reason to.
+ # could set default subvol like this, but no reason to.
# btrfs subvolume set-default \
# $(btrfs subvolume list . | grep "root_$DISTRO$" | awk '{print $2}') .
# no cow on the root filesystem. it's setup is fully scripted,
- # (immutable in buzzwords). if it messes up, we will just recreated it,
+ # if it's messed up, we will just recreated it,
# and we can get better perf with this.
# I can't remember exactly why, but this is preferable to mounting with
# -o nodatacow, I think because subvolumes inherit that.
cd /mnt
btrfs subvolume set-default 0 /mnt # already default, just ensuring it.
-# for libreboot systems.
+# for libreboot systems. grub2 only reads from subvolid=0
mkdir -p /mnt/grub2
cp $FAI/distro-install-common/libreboot_grub.cfg /mnt/grub2
ROOT_PARTITION=$first_boot_dev
EOF
else
- # note, the mount point /a seems to get automatically created somewhere
+ # note, fai creates the mountpoints listed here
cat > /tmp/fai/fstab <<EOF
$first_root_crypt / btrfs noatime,subvol=root_$DISTRO 0 0
-$first_root_crypt /q btrfs noatime,subvol=q 0 0
-/q/a /a none bind 0 0
+$first_root_crypt /mnt/root btrfs noatime,subvolid=0 0 0
$first_boot_dev /boot btrfs noatime,subvol=$boot_vol 0 0
EOF
-
- # I will avoid using uuid in the future. the other way of specifying is simpler
- if ifclass treetowl; then
- cat >> /tmp/fai/fstab <<'EOF'
-$first_root_crypt /i btrfs noatime,subvol=i 0 0
-UUID=3f7b31cd-f299-40b4-a86b-7604282e2715 /i btrfs noatime 0 2
-EOF
- fi
-
swaps=()
for dev in ${devs[@]}; do
swaps+=(`swap-cryptname`)