#!/bin/bash -x
+# Copyright (C) 2016 Ian Kelling
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License
+# as published by the Free Software Foundation; either version 2
+# of the License, or (at your option) any later version.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with this program; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+
+PS4='+ $LINENO '
set -eE -o pipefail
-trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?"' ERR
+trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
+
+if [[ $EUID != 0 ]]; then
+ echo "$0: error: need to run as root" >&2
+ exit 1
+fi
+
+# for calling outside of FAI:
+# # need to redep and set that location so that we get luks keys
+# export FAI=/srv/fai/config
+# fai-redep
+# source /b/fai/fai-wrapper
+# - set any appropriate classes with: fai-setclass OPT1... which sets CLASS_OPT1=true...
+# or run eval-fai-classfile FILE
+#
+# OPTIONS:
+#
+# environment variables:
+#
+# HOSTNAME: if frodo, we exclude 2 devices from the /boot array, which
+# the bios does not see. if demohost, we set the luks password to just
+# 'x'.
+#
+# SPECIAL_DISK: For use outside of fai. A base disk name like
+# /dev/sdk. If set, we just cryptsetup and partition this one disk then
+# exit. This is useful for partitioning a disk in preparation to replace
+# a failed or failing disk from a raid10 array.
+#
+# classes:
+#
+# REPARTITION: forces repartitioning even if we detect the proper amount
+# of partitions already exist.
+#
+# NOWIPE: use existing subvolumes if they exist
+#
+# ROTATIONAL: forces to install onto hdds instead of sdds. normally sdds
+# are chosen if they exist.
+#
+# PARTITION_PROMPT: command line prompt before partitioning
+#
+# RAID0: forces raid0 filesystem. Normally with 4+ devices, we use
+# raid10.
+# RAID1: forces raid1 filesystem.
+
+if [[ $SPECIAL_DISK ]]; then
+ export CLASS_REPARTITION=true
+fi
# # fai's setup-storage won't do btrfs on luks,
# # so we do it ourself :)
+# inspiration taken from files in fai-setup-storage package
+
+# if we are not running in fai, skiptask won't be defined, so carry on.
+skiptask partition || ! type skiptask
+
+if ! type -p devbyid; then
+ for d in $FAI/distro-install-common \
+ /a/bin/fai/fai/config/distro-install-common $FAI $PWD; do
+ [[ -d $d ]] || continue
+ if [[ -e $d/devbyid ]]; then
+ devbyid=$d/devbyid
+ devbyid() { $devbyid "$@"; }
+ break
+ fi
+ done
+ if [[ ! $devbyid ]]; then
+ echo "$0: error: failed to find devbyid script" >&2
+ exit 1
+ fi
+fi
+
-skiptask partition || ! type skiptask # for running not in fai
#### begin configuration
-bootn=3
rootn=1
swapn=2
-bios_grubn=4
-boot_mib=750
+bootn=3
+# ext partition so grub can write persistent variables,
+# so it can do a one time boot. grub can't write to
+# btrfs or any cow fs because it's more
+# more complicated to do and they don't want to.
+grub_extn=4
+# bios boot partition,
+# https://wiki.archlinux.org/index.php/GRUB
+bios_grubn=5
lastn=$bios_grubn
-if ifclass VM; then
- d=vd
+
+
+##### end configuration
+
+
+add-part() { # add partition suffix to $dev
+ local d ret
+ if [[ $# == 1 ]]; then
+ d=$dev
+ part=$1
+ else
+ d=$1
+ part=$2
+ fi
+ if [[ $d == /dev/disk/by-id/* ]]; then
+ ret=$d-part$part
+ else
+ ret=$d$part
+ fi
+ echo $ret
+}
+
+bootdev() { add-part $@ $bootn; }
+rootdev() { add-part $@ $rootn; }
+swapdev() { add-part $@ $swapn; }
+grub_extdev() { add-part $@ $grub_extn; }
+bios_grubdev() { add-part $@ $bios_grubn; }
+
+crypt-dev() { echo /dev/mapper/crypt_dev_${1##*/}; }
+crypt-name() { echo crypt_dev_${1##*/}; }
+root-cryptdev() { crypt-dev $(rootdev $@); }
+swap-cryptdev() { crypt-dev $(swapdev $@); }
+root-cryptname() { crypt-name $(rootdev $@); }
+swap-cryptname() { crypt-name $(swapdev $@); }
+
+##### end function defs
+
+if ifclass REPARTITION; then
+ partition=true # force a full wipe
else
- d=sd
+ partition=false # change to true to force a full wipe
fi
-
-letters=()
-if ifclass TWO_DISK; then
- letters=(a b)
-elif ifclass ONE_DISK; then
- letters=(a)
-elif ifclass MANY_DISK; then
- for dev in /dev/${d}?; do letters+=(${dev#/dev/${d}}); done
+if ifclass NOWIPE; then
+ wipe=false
else
- exit 1
+ wipe=true
fi
-if [[ ! $DISTRO ]]; then
- if ifclass STABLE; then
- DISTRO=debianjessie
- else
- DISTRO=debiantesting
- fi
-fi
+## ignore disks that are mounted, eg when running from fai-cd
+declare -A disk_excludes
+while read -r l; do
+ eval "$l"
+ if [[ ! $PKNAME ]]; then
+ PKNAME="$KNAME"
+ fi
+ if [[ $MOUNTPOINT ]]; then
+ disk_excludes[$PKNAME]=true
+ fi
+done < <(lsblk -nP -o KNAME,MOUNTPOINT,PKNAME)
-##### end configuration
+hdds=()
+ssds=()
+cd /sys/block
+for disk in [sv]d[a-z]; do
+ if [[ ${disk_excludes[$disk]} ]]; then
+ continue
+ fi
+ case $(cat $disk/queue/rotational) in
+ 0) ssds+=(/dev/$disk) ;;
+ 1) hdds+=(/dev/$disk) ;;
+ *) echo "$0: error: unknown /sys/block/$disk/queue/rotational: \
+$(cat $disk/queue/rotational)"; exit 1 ;;
+ esac
+done
-bpart() { # btrfs a partition
- dev_n=$1
- case ${#@} in
- [1-3]) mkfs.btrfs -f $@ ;;
- [4-9]*|[1-3]?*) mkfs.btrfs -f -m raid10 -d raid10 $@ ;;
- esac
-}
+# install all ssds, or if there are none, all hdds.
+# Note, usb flash disks are seen as rotational, which is
+# very odd, but convenient for ignoring them here.
+# TODO: find a reliable way to ignore them.
+if ! ifclass ROTATIONAL && (( ${#ssds[@]} > 0 )); then
+ short_devs=( ${ssds[@]} )
+else
+ short_devs=( ${hdds[@]} )
+fi
-devs=(${letters[@]/#//dev/${d}})
-crypt_devs=(${letters[@]/#//dev/mapper/crypt_dev_${d}})
-first_boot_dev=${devs[0]}$bootn
+# check if the partitions exist have the right filesystems
+#blkid="$(blkid -s TYPE)"
+for dev in ${short_devs[@]}; do
+ if $partition; then break; fi
+ y=$(readlink -f $dev)
+ arr=($y[0-9])
+ [[ ${#arr[@]} == "$lastn" ]] || partition=true
+ for (( i=1; i <= lastn; i++ )); do
+ [[ -e ${dev}$i ]] || partition=true
+ done
+ # On one system, blkid is missing some partitions.
+ # maybe we need a flag, like FUZZY_BLKID or something, so we
+ # can check that at least some exist.
+ # for x in "`rootdev`: TYPE=\"crypto_LUKS\"" "`bootdev`: TYPE=\"btrfs\""; do
+ # echo "$blkid" | grep -Fx "$x" &>/dev/null || partition=true
+ # done
+done
-partition=true # hardcoded for now
+if $partition && ifclass PARTITION_PROMPT; then
+ echo "Press any key except ctrl-c to continue and partition these drives:"
+ echo " ${short_devs[*]}"
+ read -r
+fi
+
+devs=()
+shopt -s extglob
+for short_dev in ${short_devs[@]}; do
+ devs+=($(devbyid $short_dev))
+done
+if [[ ! ${devs[0]} ]]; then
+ echo "$0: error: failed to detect devs" >&2
+ exit 1
+fi
-# somewhat crude detection of whether to partition
+boot_space=0
+first=false
+boot_devs=()
for dev in ${devs[@]}; do
- x=($dev[0-9])
- [[ ${#x[@]} == ${lastn} ]] || partition=true
- for (( i=1; i <= $lastn; i++ )); do
- [[ -e ${dev}$i ]] || partition=true
- done
- for part in $dev$rootn $dev$bootn; do
- # type tells us it's not totally blank
- blkid | grep "^${part}:.*TYPE=" &>/dev/null || partition=true
+ if ifclass frodo; then
+ # I ran into a machine where the bios doesn't know about some disks,
+ # so 1st stage of grub also doesn't know about them.
+ # Also, grub does not support mounting degraded btrfs as far as
+ # I can tell with some googling.
+ # From within an arch install env, I could detect them by noting
+ # their partitions were mixed with the next disk in /dev/disk/by-path,
+ # and I have mixed model disks, and I could see the 8 models which showed
+ # up in the bios, and thus see which 2 models were missing.
+ # hdparm -I /dev/sdh will give model info in linux.
+ # However, in fai on jessie, /dev/disk/by-path dir doesn't exist,
+ # and I don't see another way, so I'm hardcoding them.
+ # We still put grub on them and partition them the same, for uniformity
+ # and in case they get moved to a system that can recognize them,
+ # we just exclude them from the boot filesystem.
+ cd /dev/disk/by-id/
+ bad_disk=false
+ for id in ata-TOSHIBA_MD04ACA500_8539K4TQFS9A \
+ ata-TOSHIBA_MD04ACA500_Y5IFK6IJFS9A; do
+ if [[ $(readlink -f $id) == "$(readlink -f $dev)" ]]; then
+ bad_disk=true
+ break
+ fi
done
+ $bad_disk || boot_devs+=($(bootdev))
+ else
+ boot_space=$(( boot_space + $(parted -m $dev unit MiB print | \
+ sed -nr "s#^/dev/[^:]+:([0-9]+).*#\1#p") - 1))
+ boot_devs+=($(bootdev))
+ fi
+ if [[ $boot_devs && $first ]]; then
+ first_grub_extdev=$(grub_extdev)
+ first=false
+ fi
done
-#partition=true # for temporarily override
+if ifclass RAID0 || (( ${#boot_devs[@]} == 1 )); then
+ raid_level=0
+elif ifclass RAID1 || (( ${#boot_devs[@]} <= 3 )); then
+ raid_level=1
+else
+ raid_level=10
+fi
-# keyfiles generated like:
-# head -c 2048 /dev/urandom | od | s dd of=/q/root/luks/host-demohost
-luks_dir=${LUKS_DIR:-/var/lib/fai/config/distro-install-common/luks}
-if ifclass tp; then
- lukspw=$(cat $luks_dir/traci)
+### Begin calculate boot partition space
+# due to raid duplication
+case $raid_level in
+ 1*) boot_space=$(( boot_space / 2 )) ;;
+esac
+if (( boot_space > 60000 )); then
+ # 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
+elif (( boot_space > 30000 )); then
+ boot_mib=$(( 5000 + (boot_space - 30000) / 2 ))
else
- lukspw=$(cat $luks_dir/ian)
+ # Small vms don't have room for /boot recovery. With 3 kernels
+ # installed, i'm using 132M on t8, so this seems like plenty of
+ # room. note: rhel 8 recomments 1g for /boot.
+ boot_mib=500
+ #
fi
-if ifclass demohost; then
+case $raid_level in
+ 1*) boot_mib=$(( boot_mib * 2 )) ;;
+esac
+### end calculate boot partition space
+
+
+
+if [[ ! $DISTRO ]]; then
+ if ifclass VOL_STRETCH_BOOTSTRAP; then
+ DISTRO=debianstretch_bootstrap
+ elif ifclass VOL_STRETCH; then
+ DISTRO=debianstretch
+ elif ifclass VOL_BUSTER; then
+ DISTRO=debianbuster
+ elif ifclass VOL_TESTING; then
+ DISTRO=debiantesting
+ elif ifclass VOL_XENIAL; then
+ DISTRO=ubuntuxenial
+ elif ifclass VOL_BIONIC; then
+ DISTRO=ubuntubionic
+ elif ifclass VOL_FOCAL; then
+ DISTRO=ubuntufocal
+ elif ifclass VOL_BELENOS; then
+ DISTRO=trisquelbelenos
+ elif ifclass VOL_FLIDAS; then
+ DISTRO=trisquelflidas
+ elif ifclass VOL_ETIONA; then
+ DISTRO=trisqueletiona
+ else
+ echo "PARTITIONER ERROR: no distro class/var set" >&2
+ exit 1
+ fi
+fi
+first_boot_dev=${boot_devs[0]}
+
+
+bpart() { # btrfs a partition
+ case $raid_level in
+ 0) mkfs.btrfs -f $@ ;;
+ 1) mkfs.btrfs -f -m raid1 -d raid1 $@ ;;
+ 10) mkfs.btrfs -f -m raid10 -d raid10 $@ ;;
+ esac
+}
+
+
+if [[ ! -e /a/bin/fai/fai-wrapper ]]; then
+ # see README for docs about how to create these
+ luks_dir=$FAI/distro-install-common/luks
+
+ luks_file=$luks_dir/host-$HOSTNAME
+ if [[ ! -e $luks_file ]]; then
+ hostkeys=($luks_dir/host-*)
+ # if there is only one key, we might be deploying somewhere
+ # where dhcp doesnt give us a proper hostname, so use that.
+ if [[ ${#hostkeys[@]} == 1 && -e ${hostkeys[0]} ]]; then
+ luks_file=${hostkeys[0]}
+ else
+ echo "$0: error: no key for hostname at $luks_file" >&2
+ exit 1
+ fi
+ fi
+
+ # # note, corresponding changes in /b/ds/keyscript-{on,off}
+ if ifclass demohost; then
lukspw=x
+ elif [[ -e $luks_dir/$HOSTNAME ]]; then
+ lukspw=$(cat $luks_dir/$HOSTNAME)
+ else
+ lukspw=$(cat $luks_dir/iank)
+ fi
fi
-crypt=/dev/mapper/crypt_dev_${d##/dev/}a$rootn
+first_root_crypt=$(root-cryptdev ${devs[0]})
-bios_grub_end=4
# 1.5 x based on https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-disk-partitioning-setup-x86.html#sect-custom-partitioning-x86
swap_mib=$(( $(grep ^MemTotal: /proc/meminfo | \
- awk '{print $2}') * 3/(${#devs[@]} * 2 ) / 1024 ))
-# parted will round up the disk size. Do -1 so we can have
-# fully 1MiB unit partitions for easy resizing of the last partition.
-# Otherwise we would pass in -0 for the end argument for the last partition.
-disk_mib=$(( $(parted -m ${devs[0]} unit MiB print | \
- sed -nr "s#^${devs[0]}:([0-9]+).*#\1#p") - 1))
-root_end=$(( disk_mib - swap_mib - boot_mib ))
-swap_end=$(( root_end + swap_mib))
+ awk '{print $2}') * 3/(${#devs[@]} * 2 ) / 1024 ))
mkdir -p /tmp/fai
+root_devs=()
+for dev in ${devs[@]}; do
+ root_devs+=($(rootdev))
+done
shopt -s nullglob
if $partition; then
+
+ ### begin wipefs
+ if [[ ! $SPECIAL_DISK ]]; then
for dev in ${devs[@]}; do
- for x in $dev[0-9]; do
- count_down=10
- # wipefs has failed, manual run works, google suggests timing issue
- while ! wipefs -a $x; do
- sleep 2
- count_down=$((count_down - 1))
- (( count_down > 0 )) || exit 1
- done
+ # 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 $x; do
+ sleep 2
+ count_down=$((count_down - 1))
+ (( count_down > 0 )) || exit 1
done
+ done
done
- for dev in ${devs[@]}; do
- parted -s $dev mklabel gpt
- # gpt ubuntu cloud image uses ~4. fai uses 1 MiB.
- # I read something in the parted manual saying cheap flash media
- # likes to start at 4.
- # MiB because parted complains about alignment otherwise.
- pcmd="parted -a optimal -s -- $dev"
- $pcmd mkpart primary "ext3" 4MiB ${root_end}MiB
- $pcmd mkpart primary "linux-swap" ${root_end}MiB ${swap_end}MiB
- $pcmd mkpart primary "" ${swap_end}MiB ${disk_mib}MiB
- $pcmd mkpart primary "" 1MiB 4MiB
- $pcmd set $bios_grubn bios_grub on
- $pcmd set $bootn boot on # generally not needed on modern systems
- # the mkfs failed randomly on a vm, so I threw a sleep in here.
- sleep .1
-
- luks_dev=$dev$rootn
- yes YES | cryptsetup luksFormat $luks_dev $luks_dir/host-$HOSTNAME \
- -c aes-cbc-essiv:sha256 -s 256 || [[ $? == 141 ]]
- yes "$lukspw" | \
- cryptsetup luksAddKey --key-file $luks_dir/host-$HOSTNAME \
- $luks_dev || [[ $? == 141 ]]
- # background: Keyfile and password are treated just
- # like 2 ways to input a passphrase, so we don't actually need to have
- # different contents of keyfile and passphrase, but it makes some
- # security sense to a really big randomly generated passphrase
- # as much as possible, so we have both.
- #
- # This would remove the keyfile.
- # yes 'test' | cryptsetup luksRemoveKey /dev/... \
- # /key/file || [[ $? == 141 ]]
-
- cryptsetup luksOpen $luks_dev crypt_dev_${luks_dev##/dev/} \
- --key-file $luks_dir/host-$HOSTNAME
+ fi
+ ### end wipefs
+
+ for dev in ${devs[@]}; do
+ if [[ $SPECIAL_DISK ]]; then
+ dev=$(devbyid $SPECIAL_DISK)
+ fi
+
+ # parted will round up the disk size. Do -1 so we can have
+ # fully 1MiB unit partitions for easy resizing of the last partition.
+ # Otherwise we would pass in -0 for the end argument for the last partition.
+ #
+ # Note: parted print error output is expected. example:
+ # Error: /dev/vda: unrecognised disk label
+ disk_mib=$(( $(parted -m $dev unit MiB print | \
+ sed -nr "s#^/dev/[^:]+:([0-9]+).*#\1#p") - 1))
+ root_end=$(( disk_mib - swap_mib - boot_mib / ${#boot_devs[@]} ))
+ swap_end=$(( root_end + swap_mib))
+
+ parted -s $dev mklabel gpt
+ # MiB because parted complains about alignment otherwise.
+ pcmd="parted -a optimal -s -- $dev"
+ $pcmd mkpart primary ext3 12MiB ${root_end}MiB
+ # without naming, systemd gives us misc errors like:
+ # dev-disk-by\x2dpartlabel-primary.device: Dev dev-disk-by\x2dpartlabel-primary.device appeared twice
+ $pcmd name $rootn root
+ # normally a swap is type "linux-swap", but this is encrypted swap. using that
+ # label will confuse systemd.
+ $pcmd mkpart primary "" ${root_end}MiB ${swap_end}MiB
+ $pcmd name $swapn swap
+ $pcmd mkpart primary "" ${swap_end}MiB ${disk_mib}MiB
+ $pcmd name $bootn boot
+ # i only need a few k, but googling min size,
+ # I found someone saying that gparted required
+ # required at least 8 because of their hard drive cylinder size.
+ # And 8 is still very tiny.
+ $pcmd mkpart primary "ext2" 4MiB 12MiB
+ $pcmd name $grub_extn grubext
+ # gpt ubuntu cloud image uses ~4 mb for this partition. fai uses 1 MiB.
+ # so, I use 3, whatever.
+ # note: parted manual saying cheap flash media
+ # should to start at 4.
+ $pcmd mkpart primary "" 1MiB 4MiB
+ $pcmd name $bios_grubn biosgrub
+ $pcmd set $bios_grubn bios_grub on
+ $pcmd set $bootn boot on # generally not needed on modern systems
+ # the mkfs failed before on a vm, which prompted me to add
+ # sleep .1
+ # then it failed again on a physical machine
+ # with:
+ # Device /dev/disk/by-id/foo doesn't exist or access denied,
+ # so I added a wait until it existed.
+ # Then I added the mkfs.ext2, which claimed to succeed,
+ # but then couldn't be found upon reboot. In that case we didn't
+ # wait at all. So I've added a 3 second minimum wait.
+ sleep 3
+ secs=0
+ while [[ ! -e $(rootdev) ]] && (( secs < 10 )); do
+ sleep 1
+ secs=$((secs +1))
done
- bpart ${crypt_devs[@]/%/$rootn}
- bpart ${devs[@]/%/$bootn}
+ # Holds just a single file, rarely written, so
+ # use ext2, like was often used for the /boot partition.
+ # This exists because grub can only persist data to a non-cow fs.
+ # And we use persisting a var in grub to do a one time boot.
+ # We could pass the data on the kernel command line and persist it
+ # to grubenv after booting, but that relies on the boot always succeeding.
+ # This is just a bit more robust, and it could work for booting
+ # into ipxe which can't persist data, if we ever got that working.
+ mkfs.ext2 $(grub_extdev)
+ # when we move to newer than trisquel 8, we can remove
+ # --type luks1. We can also check on cryptsetup --help | less /compil
+ # to see about the other settings. Default in debian 9 is luks2.
+ # You can convert from luks2 to luks 1 by adding a temporary key:
+ # cryptsetup luksAddKey --pbkdf pbkdf2
+ # then remove the new format keys with cryptsetup luksRemoveKey
+ # then cryptsetup convert DEV --type luks1, then readd old keys and remove temp.
+ yes YES | cryptsetup luksFormat $(rootdev) $luks_file \
+ --type luks1 -c aes-cbc-essiv:sha256 -s 256 || [[ $? == 141 ]]
+ yes "$lukspw" | \
+ cryptsetup luksAddKey --key-file $luks_file \
+ $(rootdev) || [[ $? == 141 ]]
+ # background: Keyfile and password are treated just
+ # like 2 ways to input a passphrase, so we don't actually need to have
+ # different contents of keyfile and passphrase, but it makes some
+ # security sense to a really big randomly generated passphrase
+ # as much as possible, so we have both.
+ #
+ # This would remove the keyfile.
+ # yes 'test' | cryptsetup luksRemoveKey /dev/... \
+ # /key/file || [[ $? == 141 ]]
+
+ cryptsetup luksOpen $(rootdev) $(root-cryptname) \
+ --key-file $luks_file
+
+ if [[ $SPECIAL_DISK ]]; then
+ exit 0
+ fi
+ done
+ ls -la /dev/btrfs-control # this was probably for debugging...
+ sleep 1
+ bpart $(for dev in ${devs[@]}; do root-cryptdev; done)
+ bpart ${boot_devs[@]}
else
- for dev in ${devs[@]}; do
- cryptsetup luksOpen $dev$rootn crypt_dev_${dev##/dev/}$rootn \
- --key-file $luks_dir/host-$HOSTNAME || [[ $? == 141 ]]
- done
- sleep 1
+ for dev in ${devs[@]}; do
+ if [[ -e /dev/mapper/$(root-cryptname) ]]; then
+ continue
+ fi
+ cryptsetup luksOpen $(rootdev) $(root-cryptname) \
+ --key-file $luks_file
+ done
+ sleep 1
fi
-mount -o subvolid=0 $crypt /mnt
-# systemd creates subvolumes we want to delete.
-s=($(btrfs subvolume list --sort=-path /mnt |
- sed -rn "s#^.*path\s*(root_$DISTRO/\S+)\s*\$#\1#p"))
-for subvol in ${s[@]}; do btrfs subvolume delete /mnt/$subvol; done
-btrfs subvolume set-default 0 /mnt
-[[ ! -e /mnt/root_$DISTRO ]] || btrfs subvolume delete /mnt/root_$DISTRO
+if $wipe && [[ $DISTRO != debianstretch_bootstrap ]]; then
+ # bootstrap distro doesn't use separate encrypted root.
+ mount -o subvolid=0 $first_root_crypt /mnt
+ # systemd creates subvolumes we want to delete.
+ s=($(btrfs subvolume list --sort=-path /mnt |
+ sed -rn "s#^.*path\s*(root_$DISTRO/\S+)\s*\$#\1#p"))
+ for subvol in ${s[@]}; do btrfs subvolume delete /mnt/$subvol; done
+ btrfs subvolume set-default 0 /mnt
+ [[ ! -e /mnt/root_$DISTRO ]] || btrfs subvolume delete /mnt/root_$DISTRO
-## create subvols ##
-cd /mnt
-for x in q home_$DISTRO root_$DISTRO; do
- btrfs subvolume list . | grep "$x$" >/dev/null || btrfs subvolume create $x
-done
-for x in root/a q/a; do
- mkdir -p $x
- chown 1000:1000 $x
- chmod 755 $x
-done
-btrfs subvolume set-default \
- $(btrfs subvolume list . | grep "root_$DISTRO$" | awk '{print $2}') .
-chattr -Rf +C root
-cd /
-umount /mnt
-mount $first_boot_dev /mnt
+ ## create subvols ##
+ cd /mnt
+
+ btrfs subvolume create root_$DISTRO
+
+ # could set default subvol like this, but no reason to.
+ # btrfs subvolume set-default \
+ # $(btrfs subvolume list . | grep "root_$DISTRO$" | awk '{print $2}') .
+
+ # no cow on the root filesystem. it's setup is fully scripted,
+ # if it's messed up, we will just recreated it,
+ # and we can get better perf with this.
+ # I can't remember exactly why, but this is preferable to mounting with
+ # -o nodatacow, I think because subvolumes inherit that.
+ chattr -Rf +C root_$DISTRO
+ cd /
+ umount /mnt
+fi
+
+mount -o subvolid=0 $first_boot_dev /mnt
cd /mnt
-[[ ! -e /mnt/boot_$DISTRO ]] || btrfs subvolume delete /mnt/boot_$DISTRO
-btrfs subvolume create boot_$DISTRO
-btrfs subvolume set-default \
- $(btrfs subvolume list . | grep "boot_$DISTRO$" | awk '{print $2}') .
+btrfs subvolume set-default 0 /mnt # already default, just ensuring it.
+
+# for libreboot systems. grub2 only reads from subvolid=0
+mkdir -p /mnt/grub2
+cp $FAI/distro-install-common/libreboot_grub.cfg /mnt/grub2
+
+if [[ $DISTRO == debianstretch_bootstrap ]]; then
+ # this is just convenience for the libreboot_grub config
+ # so we can glob the other ones easier.
+ boot_vol=$DISTRO
+else
+ boot_vol=boot_$DISTRO
+fi
+if $wipe && [[ -e /mnt/$boot_vol ]]; then
+ btrfs subvolume delete /mnt/$boot_vol
+fi
+if [[ ! -e /mnt/$boot_vol ]]; then
+ btrfs subvolume create $boot_vol
+fi
cd /
umount /mnt
## end create subvols ##
+dev=${boot_devs[0]}
+mount $first_grub_extdev /mnt
+grub-editenv /mnt/grubenv set did_fai_check=true
+grub-editenv /mnt/grubenv set last_boot=/$boot_vol
+umount /mnt
-
-cat > /tmp/fai/fstab <<EOF
-$crypt / btrfs noatime,subvol=root_$DISTRO 0 0
-$crypt /q btrfs noatime,subvol=q 0 0
-/q/a /a none bind 0 0
-$crypt /home btrfs noatime,subvol=home_$DISTRO 0 0
-$first_boot_dev /boot btrfs noatime,subvol=boot_$DISTRO 0 0
+if [[ $DISTRO == debianstretch_bootstrap ]]; then
+ cat > /tmp/fai/fstab <<EOF
+$first_boot_dev / btrfs noatime,subvol=$boot_vol 0 0
EOF
-
-swaps=()
-for dev in ${devs[@]}; do
- s=crypt_swap_${dev##/dev/}$swapn
- swaps+=(/dev/mapper/$s)
+ cat >/tmp/fai/disk_var.sh <<EOF
+BOOT_DEVICE="${short_devs[@]}"
+ROOT_PARTITION=$first_boot_dev
+EOF
+else
+ # note, fai creates the mountpoints listed here
+ cat > /tmp/fai/fstab <<EOF
+$first_root_crypt / btrfs noatime,subvol=root_$DISTRO 0 0
+$first_root_crypt /mnt/root btrfs nofail,noatime,subvolid=0 0 0
+$first_boot_dev /boot btrfs nofail,noatime,subvol=$boot_vol 0 0
+$first_boot_dev /mnt/boot btrfs nofail,noatime,subvolid=0 0 0
+EOF
+ swaps=()
+ rm -f /tmp/fai/crypttab
+ for dev in ${devs[@]}; do
+ swaps+=($(swap-cryptname))
cat >>/tmp/fai/crypttab <<EOF
-crypt_dev_${dev##/dev/}$rootn $dev$rootn none keyscript=/root/keyscript,discard,luks
-$s $dev$swapn /dev/urandom swap,cipher=aes-xts-plain64,size=256,hash=ripemd160
+$(root-cryptname) $(rootdev) none keyscript=/root/keyscript,discard,luks,initramfs
+$(swap-cryptname) $(swapdev) /dev/urandom swap,cipher=aes-xts-plain64,size=256,hash=ripemd160
EOF
cat >> /tmp/fai/fstab <<EOF
-/dev/mapper/$s none swap sw 0 0
+$(swap-cryptdev) none swap nofail,sw 0 0
EOF
-done
+ done
+ # fai would do this:
+ #BOOT_DEVICE=\${BOOT_DEVICE:-"${devs[0]}"}
-# swaplist seems to do nothing.
-cat >/tmp/fai/disk_var.sh <<EOF
-ROOT_PARTITION=\${ROOT_PARTITION:-$crypt}
+ # note: swaplist seems to do nothing.
+ cat >/tmp/fai/disk_var.sh <<EOF
+BOOT_DEVICE="${short_devs[@]}"
BOOT_PARTITION=\${BOOT_PARTITION:-$first_boot_dev}
-BOOT_DEVICE=\${BOOT_DEVICE:-"${devs[0]}"}
+# ROOT_PARTITIONS is added by me, used in arch setup.
+ROOT_PARTITIONS="${root_devs[@]}"
+ROOT_PARTITION=\${ROOT_PARTITION:-$first_root_crypt}
SWAPLIST=\${SWAPLIST:-"${swaps[@]}"}
EOF
+fi