#!/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.
set -eE -o pipefail
-trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?"' ERR
+trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
# # fai's setup-storage won't do btrfs on luks,
# # so we do it ourself :)
+# inspiration taken from files in fai-setup-storage package
+skiptask partition || ! type skiptask # for running not in fai
+
#### begin configuration
-if ifclass TWO_DISK || ifclass demohost; then
- letters=(a b)
-elif ifclass ONE_DISK; then
- letters=(a)
+rootn=1
+swapn=2
+bootn=3
+# ext partition so grub can write persistent variables,
+# so it can do a one time boot. grub can't write to
+# btrfs or any cow fs because it's more
+# more complicated to do and they don't want to.
+grub_extn=4
+# bios boot partition,
+# https://wiki.archlinux.org/index.php/GRUB
+bios_grubn=5
+lastn=$bios_grubn
+# 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
+
+
+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 $@); }
+devbyid() {
+ local f
+ for f in $FAI/distro-install-common/devbyid \
+ /a/bin/fai/fai/config/distro-install-common/devbyid; do
+ if [[ -e $f ]]; then $f "$@"; fi
+ done
+
+}
+
+##### end function defs
+
+if ifclass REPARTITION;then
+ partition=true # force a full wipe
else
- exit 1
+ partition=false # change to true to force a full wipe
fi
-##### end configuration
-if ifclass VM; then
- d=vd
+
+
+hdds=()
+ssds=()
+cd /sys/block
+for disk in [sv]d[a-z]; do
+ 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
+
+# install all ssds, or if there are none, all hdds
+if ! ifclass ROTATIONAL && (( ${#ssds[@]} > 0 )); then
+ short_devs=( ${ssds[@]} )
else
- d=sd
+ short_devs=( ${hdds[@]} )
fi
+# check if the partitions exist have the right filesystems
+#blkid="$(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
+if $partition && ifclass PARTITION_PROMPT; then
+ echo "Press any key except ctrl-c to continue and partition these drives:"
+ echo " ${short_devs[*]}"
+ read -r
+fi
-skiptask partition ||: # for running out of fai
-devs=(${letters[@]/#//dev/${d}})
-crypt_devs=(${letters[@]/#//dev/mapper/crypt_dev_${d}})
+devs=()
+shopt -s extglob
+for short_dev in ${short_devs[@]}; do
+ devs+=($(devbyid $short_dev))
+done
-partition=false
-# somewhat crude detection of whether to partition
+first=false
+boot_devs=()
for dev in ${devs[@]}; do
- x=($dev[0-9])
- [[ ${#x[@]} == 4 ]] || partition=true
- for part in ${dev}{1,2,3,4}; do
- [[ -e $part ]] || partition=true
- done
- # type tells us it's not totally blank
- for part in ${dev}{1,3}; do
- blkid | grep "^$part:.*TYPE=" &>/dev/null || partition=true
- done
+ 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_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 || (( ${#boot_devs[@]} < 4 )); then
+ raid_level=0
+else
+ raid_level=10
+ # need double the space if we are raid 10, and then
+ # might as well give some extra.
+ boot_mib=$((boot_mib * 3))
+fi
+
+
+
+if [[ ! $DISTRO ]]; then
+ if ifclass VOL_STRETCH_BOOTSTRAP; then
+ DISTRO=stretch_bootstrap
+ elif ifclass VOL_STRETCH; then
+ DISTRO=debianstretch
+ elif ifclass VOL_XENIAL; then
+ DISTRO=ubuntuxenial
+ elif ifclass VOL_BELENOS; then
+ DISTRO=trisquelbelenos
+ elif ifclass VOL_FLIDAS; then
+ DISTRO=trisquelflidas
+ else
+ echo "PARTITIONER ERROR: no distro class/var set" >&2
+ exit 1
+ fi
+fi
+first_boot_dev=${boot_devs[0]}
+
+
+bpart() { # btrfs a partition
+ case $raid_level in
+ 0) mkfs.btrfs -f $@ ;;
+ 10) mkfs.btrfs -f -m raid10 -d raid10 $@ ;;
+ esac
+}
+
# keyfiles generated like:
# head -c 2048 /dev/urandom | od | s dd of=/q/root/luks/host-demohost
luks_dir=${LUKS_DIR:-/var/lib/fai/config/distro-install-common/luks}
+
+if [[ ! -e $luks_dir/host-$HOSTNAME ]]; then
+ echo "$0: error: no key for hostname at $luks_dir/host-$HOSTNAME" >&2
+ exit 1
+fi
+
if ifclass tp; then
lukspw=$(cat $luks_dir/traci)
else
- lukspw=$(cat $luks_dir/ian)
+ lukspw=$(cat $luks_dir/iank)
fi
if ifclass demohost; then
lukspw=x
fi
-boot_end=504
-
-crypt=/dev/mapper/crypt_dev_${d##/dev/}a3
-
+first_root_crypt=$(root-cryptdev ${devs[0]})
# 1.5 x based on https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-disk-partitioning-setup-x86.html#sect-custom-partitioning-x86
-swap_end=$(( $(grep ^MemTotal: /proc/meminfo| awk '{print $2}') * 3/(${#devs[@]} * 2 ) / 1000 + boot_end ))
-
-create_subvols() {
- cd /mnt
- for x in q home root; 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 \
- $(btrfs subvolume list . | grep 'root$' | awk '{print $2}') .
- chattr -Rf +C root
- cd /
- umount /mnt
-}
+swap_mib=$(( $(grep ^MemTotal: /proc/meminfo | \
+ 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
for dev in ${devs[@]}; do
- for x in $dev[0-9]; do wipefs -a $x; done
+ # if we repartition to the same as an old partition,
+ # we don't want any old fses hanging around.
+ for (( i=1; i <= lastn; i++ )); do
+ x=$(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. ehh, i'll do 4.
- # also, using MB instead of MiB causes complains about alignment.
- parted -s $dev mkpart primary "ext3" 4MB ${boot_end}MiB
- parted -s $dev set 1 boot on
- parted -s $dev mkpart primary "linux-swap" ${boot_end}MiB ${swap_end}MiB
- parted -s -- $dev mkpart primary "" ${swap_end}MiB -0
- parted -s $dev mkpart primary "" 1MiB 4MiB
- parted -s $dev set 4 bios_grub on
- # the mkfs failed randomly on a vm, so I threw a sleep in here.
- sleep .1
- mkfs.ext4 -F ${dev}1
- # 3 is device which simply holds a key for the 4's,
- # so we can unlock multi-device btrfs fs with 1 manually entered passphrase.
+ # 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.
#
- # Background: It's of course possible modify the initramfs to
- # put the input from a passphrase prompt into a variable and use
- # it to unlock multiple devices, but that would require figuring
- # more things out.
- #
- for luks_dev in ${dev}3; do
- 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
+ # 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
+ # 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`
+ yes YES | cryptsetup luksFormat `rootdev` $luks_dir/host-$HOSTNAME \
+ -c aes-cbc-essiv:sha256 -s 256 || [[ $? == 141 ]]
+ yes "$lukspw" | \
+ cryptsetup luksAddKey --key-file $luks_dir/host-$HOSTNAME \
+ `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 $luks_dir/host-$HOSTNAME
done
- mkfs.btrfs -f ${crypt_devs[@]/%/3}
- parted ${devs[0]} set 1 boot on
- mount $crypt /mnt
- create_subvols
+ 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
- mkfs.ext4 -F ${dev}1
- cryptsetup luksOpen ${dev}3 crypt_dev_${dev##/dev/}3 \
- --key-file $luks_dir/host-$HOSTNAME || [[ $? == 141 ]]
+ mkfs.ext2 `grub_extdev`
+ cryptsetup luksOpen `rootdev` `root-cryptname` \
+ --key-file $luks_dir/host-$HOSTNAME
done
sleep 1
- mount -o subvolid=0 $crypt /mnt
+fi
+
+
+if [[ $DISTRO != stretch_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/\S+)\s*$#\1#p'))
+ sed -rn "s#^.*path\s*(root_$DISTRO/\S+)\s*\$#\1#p"))
for subvol in ${s[@]}; do btrfs subvolume delete /mnt/$subvol; done
btrfs subvolume set-default 0 /mnt
- btrfs subvolume delete /mnt/root
- create_subvols
+ [[ ! -e /mnt/root_$DISTRO ]] || btrfs subvolume delete /mnt/root_$DISTRO
+
+ ## create subvols ##
+ cd /mnt
+
+ btrfs subvolume create root_$DISTRO
+
+ mkdir -p /mnt/root_$DISTRO/boot
+ # 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
+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 $FAI/distro-install-common/libreboot_grub.cfg /mnt/grub2
-cat > /tmp/fai/fstab <<EOF
-$crypt / btrfs noatime,subvol=/root 0 0
-$crypt /q btrfs noatime,subvol=/q 0 0
-/q/a /a none bind 0 0
-$crypt /home btrfs noatime,subvol=/home 0 0
-${devs[0]}1 /boot ext4 noatime 0 2
-EOF
+if [[ $DISTRO == stretch_bootstrap ]]; then
+ # this is just convenience for the libreboot_grub config
+ # so we can glob the other ones easier.
+ boot_vol=$DISTRO
+else
+ boot_vol=boot_$DISTRO
+fi
+[[ ! -e /mnt/$boot_vol ]] || btrfs subvolume delete /mnt/$boot_vol
+btrfs subvolume create $boot_vol
+cd /
+umount /mnt
+## end create subvols ##
+dev=${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
-swaps=()
-for dev in ${devs[@]}; do
- s=crypt_swap_${dev##/dev/}2
- swaps+=(/dev/mapper/$s)
- cat >>/tmp/fai/crypttab <<EOF
-crypt_dev_${dev##/dev/}3 ${dev}3 none keyscript=/root/keyscript,discard,luks
-$s ${dev}2 /dev/urandom swap,cipher=aes-xts-plain64,size=256,hash=ripemd160
+if [[ $DISTRO == stretch_bootstrap ]]; then
+ cat > /tmp/fai/fstab <<EOF
+$first_boot_dev / btrfs noatime,subvol=$boot_vol 0 0
EOF
- cat >> /tmp/fai/fstab <<EOF
-/dev/mapper/$s none swap sw 0 0
+ cat >/tmp/fai/disk_var.sh <<EOF
+BOOT_DEVICE="${short_devs[@]}"
+ROOT_PARTITION=$first_boot_dev
EOF
-done
+else
+ # note, fai creates the mountpoints listed here
+ cat > /tmp/fai/fstab <<EOF
+$first_root_crypt / btrfs noatime,subvol=root_$DISTRO 0 0
+$first_root_crypt /mnt/root btrfs noatime,subvolid=0 0 0
+$first_boot_dev /boot btrfs noatime,subvol=$boot_vol 0 0
+EOF
+ swaps=()
+ for dev in ${devs[@]}; do
+ swaps+=(`swap-cryptname`)
+ cat >>/tmp/fai/crypttab <<EOF
+`root-cryptname` `rootdev` none keyscript=/root/keyscript,discard,luks
+`swap-cryptname` `swapdev` /dev/urandom swap,cipher=aes-xts-plain64,size=256,hash=ripemd160
+EOF
+ cat >> /tmp/fai/fstab <<EOF
+`swap-cryptdev` none swap sw 0 0
+EOF
+ done
+ # fai would do this:
+ #BOOT_DEVICE=\${BOOT_DEVICE:-"${devs[0]}"}
-# swaplist seems to do nothing.
-cat >/tmp/fai/disk_var.sh <<EOF
-ROOT_PARTITION=\${ROOT_PARTITION:-$crypt}
-BOOT_PARTITION=\${BOOT_PARTITION:-${devs[0]}1}
-BOOT_DEVICE=\${BOOT_DEVICE:-"${devs[0]}"}
+ # note: swaplist seems to do nothing.
+ cat >/tmp/fai/disk_var.sh <<EOF
+BOOT_DEVICE="${short_devs[@]}"
+BOOT_PARTITION=\${BOOT_PARTITION:-$first_boot_dev}
+# ROOT_PARTITIONS is added by me, used in arch setup.
+ROOT_PARTITIONS="${root_devs[@]}"
+ROOT_PARTITION=\${ROOT_PARTITION:-$first_root_crypt}
SWAPLIST=\${SWAPLIST:-"${swaps[@]}"}
EOF
+fi
iankelling.org / git / automated-distro-installer / blobdiff