#!/bin/bash -x
set -eE -o pipefail
-trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?"' ERR
+trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
# # fai's setup-storage won't do btrfs on luks,
# # so we do it ourself :)
-skiptask partition ||: # for running out of fai
+skiptask partition || ! type skiptask # for running not in fai
#### begin configuration
-bootn=1
+rootn=1
swapn=2
-rootn=3
+bootn=3
bios_grubn=4
-boot_end=804
-lastn=$bios_grubn
+boot_mib=1500
+
+
+##### end configuration
+
+
+add-part() {
+ 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; }
+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 $@); }
+
-if ifclass VM; then
- d=vd
+##### end function defs
+
+if ifclass REPARTITION;then
+ partition=true # force a full wipe
else
- d=sd
+ partition=false # change to true to force a full wipe
fi
-letters=()
-if ifclass TWO_DISK; then
- letters=(a b)
-elif ifclass ONE_DISK; then
- letters=(a)
-elif ifclass MANY_DISK; then
- for dev in /dev/${d}?; do letters+=(${dev#/dev/${d}}); done
+lastn=$bios_grubn
+
+
+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 (( ${#ssds[@]} > 0 )); then
+ short_devs=( ${ssds[@]} )
else
- exit 1
+ short_devs=( ${hdds[@]} )
fi
-##### end configuration
+# check if the partitions exist have the right filesystems
+#blkid="$(blkid -s TYPE)"
+for dev in ${short_devs[@]}; do
+ ! $partition || break
+ y=$(readlink -f $dev)
+ x=($y[0-9])
+ [[ ${#x[@]} == "${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
-bpart() {
- dev_n=$1
- case ${#@} in
- [1-3]) mkfs.btrfs -f $@ ;;
- [4-9]*|[1-3]?*) mkfs.btrfs -f -m raid10 -d raid10 $@ ;;
- esac
-}
+if $partition && ifclass PARTITION_PROMPT; then
+ echo "Press any key except ctrl-c to continue and partition these drives:"
+ echo " ${short_devs[@]}"
+ read
+fi
+
+devs=()
+shopt -s extglob
+for short_dev in ${short_devs[@]}; do
+ devs+=($(devbyid $short_dev))
+done
-devs=(${letters[@]/#//dev/${d}})
-crypt_devs=(${letters[@]/#//dev/mapper/crypt_dev_${d}})
-first_boot_dev=${devs[0]}$bootn
-partition=true
-# somewhat crude detection of whether to partition
+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
- 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
done
-#partition=true # for temporarily override
+if [[ ! $DISTRO ]]; then
+ if ifclass STABLE; then
+ DISTRO=debianstable
+ else
+ DISTRO=debiantesting
+ fi
+fi
+
+
+
+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 $@ ;;
+ esac
+}
+
+first_boot_dev=${boot_devs[0]}
# 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 $luks_dir/traci)
else
fi
-crypt=/dev/mapper/crypt_dev_${d##/dev/}a$rootn
-
+first_root_crypt=$(root-cryptdev ${devs[0]})
-if ifclass frodo; then
- # next upgrade is prolly 16 gigs of memory, across ~8 devices
- swap_end=$((3500 + boot_end))
-else
- # 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 ))
-fi
+bios_grubn=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 ))
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
+ 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
+ done
done
for dev in ${devs[@]}; do
+ # parted will round up the disk size. Do -1 so we can have
+ # fully 1MiB unit partitions for easy resizing of the last partition.
+ # Otherwise we would pass in -0 for the end argument for the last partition.
+ #
+ # parted print error output is expected. example:
+ # Error: /dev/vda: unrecognised disk label
+ disk_mib=$(( $(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
- # 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.
+ # 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" 4MB ${boot_end}MiB
- $pcmd mkpart primary "linux-swap" ${boot_end}MiB ${swap_end}MiB
- $pcmd mkpart primary "" ${swap_end}MiB -0
+ $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 \
+ # the mkfs failed before on a vm, which prompted me to add
+ # sleep .1
+ # then failed on a physical machine
+ # with:
+ # Device /dev/disk/by-id/foo doesn't exist or access denied,
+ # so here we wait.
+ secs=0
+ while [[ ! -e `rootdev` ]] && (( secs < 10 )); do
+ sleep 1
+ secs=$((secs +1))
+ done
+ 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 \
- $luks_dev || [[ $? == 141 ]]
+ `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
# yes 'test' | cryptsetup luksRemoveKey /dev/... \
# /key/file || [[ $? == 141 ]]
- cryptsetup luksOpen $luks_dev crypt_dev_${luks_dev##/dev/} \
+ cryptsetup luksOpen `rootdev` `root-cryptname` \
--key-file $luks_dir/host-$HOSTNAME
done
- bpart ${crypt_devs[@]/%/$rootn}
- mount $crypt /mnt
+ ls -la /dev/btrfs-control
+ 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 ]]
+ cryptsetup luksOpen `rootdev` `root-cryptname` \
+ --key-file $luks_dir/host-$HOSTNAME
done
sleep 1
- 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/\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
fi
-bpart ${devs[@]/%/$bootn}
+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 root; do
- btrfs subvolume list . | grep "$x$" >/dev/null || btrfs subvolume create $x
-done
-for x in root/a q/a; do
+btrfs subvolume create root_$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
-btrfs subvolume set-default \
- $(btrfs subvolume list . | grep 'root$' | awk '{print $2}') .
-chattr -Rf +C root
+# could set default like this, but no reason to.
+# btrfs subvolume set-default \
+ # $(btrfs subvolume list . | grep "root_$DISTRO$" | awk '{print $2}') .
+chattr -Rf +C root_$DISTRO
cd /
umount /mnt
-mount $first_boot_dev /mnt
+mount -o subvolid=0 $first_boot_dev /mnt
cd /mnt
-btrfs subvolume create boot
-btrfs subvolume set-default \
- $(btrfs subvolume list . | grep 'boot$' | awk '{print $2}') .
+btrfs subvolume set-default 0 /mnt
+[[ ! -e /mnt/boot_$DISTRO ]] || btrfs subvolume delete /mnt/boot_$DISTRO
+btrfs subvolume create boot_$DISTRO
cd /
umount /mnt
## end create subvols ##
-
+# note, the mount point /a seems to get automatically created somewhere
cat > /tmp/fai/fstab <<EOF
-$crypt / btrfs noatime,subvol=/root 0 0
-$crypt /q btrfs noatime,subvol=/q 0 0
+$first_root_crypt / btrfs noatime,subvol=root_$DISTRO 0 0
+$first_root_crypt /q btrfs noatime,subvol=q 0 0
/q/a /a none bind 0 0
-$crypt /home btrfs noatime,subvol=/home 0 0
-$first_boot_dev /boot btrfs noatime,subvol=/boot 0 0
+$first_boot_dev /boot btrfs noatime,subvol=boot_$DISTRO 0 0
EOF
+
+if ifclass treetowl; then
+ cat >> /tmp/fai/fstab <<'EOF'
+UUID=3f7b31cd-f299-40b4-a86b-7604282e2715 /i btrfs noatime 0 2
+EOF
+fi
+
+if ifclass frodo; then
+ cat >> /tmp/fai/fstab <<'EOF'
+/q/i /i none bind 0 0
+EOF
+fi
+
swaps=()
for dev in ${devs[@]}; do
- s=crypt_swap_${dev##/dev/}$swapn
- swaps+=(/dev/mapper/$s)
+ 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
+`swap-cryptname` `swapdev` /dev/urandom swap,cipher=aes-xts-plain64,size=256,hash=ripemd160
EOF
cat >> /tmp/fai/fstab <<EOF
-/dev/mapper/$s none swap sw 0 0
+`swap-cryptdev` none swap sw 0 0
EOF
done
+# fai would do this:
+#BOOT_DEVICE=\${BOOT_DEVICE:-"${devs[0]}"}
# swaplist seems to do nothing.
+
cat >/tmp/fai/disk_var.sh <<EOF
-ROOT_PARTITION=\${ROOT_PARTITION:-$crypt}
+# ROOT_PARTITIONS is added by me, used in arch setup.
+ROOT_PARTITIONS="${root_devs[@]}"
+ROOT_PARTITION=\${ROOT_PARTITION:-$first_root_crypt}
BOOT_PARTITION=\${BOOT_PARTITION:-$first_boot_dev}
-BOOT_DEVICE=\${BOOT_DEVICE:-"${devs[0]}"}
+BOOT_DEVICE="${short_devs[@]}"
SWAPLIST=\${SWAPLIST:-"${swaps[@]}"}
EOF
iankelling.org / git / automated-distro-installer / blobdiff