2 # Copyright (C) 2016 Ian Kelling
4 # This program is free software; you can redistribute it and/or
5 # modify it under the terms of the GNU General Public License
6 # as published by the Free Software Foundation; either version 2
7 # of the License, or (at your option) any later version.
9 # This program is distributed in the hope that it will be useful,
10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 # GNU General Public License for more details.
14 # You should have received a copy of the GNU General Public License
15 # along with this program; if not, write to the Free Software
16 # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
19 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
21 # for calling outside of FAI, first
22 # - source /a/bin/fai-wrapper
23 # - set any appropriate classes with: fai-setclass OPT1... which sets CLASS_OPT1=true...
24 # or run eval-fai-classfile FILE
28 # environment variables:
30 # HOSTNAME: if frodo, we exclude 2 devices from the /boot array, which
31 # the bios does not see. if demohost, we set the luks password to just
34 # SPECIAL_DISK: For use outside of fai. A base disk name like
35 # /dev/sdk. If set, we just cryptsetup and partition this one disk then
36 # exit. This is useful for partitioning a disk in preparation to replace
37 # a failed or failing disk from a raid10 array.
41 # REPARTITION: forces repartitioning even if we detect the proper amount
42 # of partitions already exist.
44 # ROTATIONAL: forces to install onto hdds instead of sdds. normally sdds
45 # are chosen if they exist.
47 # PARTITION_PROMPT: command line prompt before partitioning
49 # RAID0: forces raid0 filesystem. Normally with 4+ devices, we use
51 # RAID1: forces raid1 filesystem.
53 if [[ $SPECIAL_DISK ]]; then
54 export CLASS_REPARTITION
=true
57 # # fai's setup-storage won't do btrfs on luks,
58 # # so we do it ourself :)
59 # inspiration taken from files in fai-setup-storage package
61 # if we are not running in fai, skiptask won't be defined, so carry on.
62 skiptask partition ||
! type skiptask
64 if ! type -p devbyid
; then
65 for d
in $FAI/distro-install-common \
66 /a
/bin
/fai
/fai
/config
/distro-install-common
$FAI $PWD; do
67 [[ -d $d ]] ||
continue
68 if [[ -e $d/devbyid
]]; then
70 devbyid
() { $devbyid "$@"; }
74 if [[ ! $devbyid ]]; then
75 echo "$0: error: failed to find devbyid script" >&2
82 #### begin configuration
87 # ext partition so grub can write persistent variables,
88 # so it can do a one time boot. grub can't write to
89 # btrfs or any cow fs because it's more
90 # more complicated to do and they don't want to.
92 # bios boot partition,
93 # https://wiki.archlinux.org/index.php/GRUB
96 # this is larger than needed for several /boot subvols,
97 # becuase I keep a minimal debian install on it, for
98 # recovery needs, and for doing pxe-kexec.
102 ##### end configuration
105 add-part
() { # add partition suffix to $dev
107 if [[ $# == 1 ]]; then
114 if [[ $d == /dev
/disk
/by-id
/* ]]; then
122 bootdev
() { add-part $@
$bootn; }
123 rootdev
() { add-part $@
$rootn; }
124 swapdev
() { add-part $@
$swapn; }
125 grub_extdev
() { add-part $@
$grub_extn; }
126 bios_grubdev
() { add-part $@
$bios_grubn; }
128 crypt-dev
() { echo /dev
/mapper
/crypt_dev_
${1##*/}; }
129 crypt-name
() { echo crypt_dev_
${1##*/}; }
130 root-cryptdev
() { crypt-dev $
(rootdev $@
); }
131 swap-cryptdev
() { crypt-dev $
(swapdev $@
); }
132 root-cryptname
() { crypt-name $
(rootdev $@
); }
133 swap-cryptname
() { crypt-name $
(swapdev $@
); }
135 ##### end function defs
137 if ifclass REPARTITION
;then
138 partition
=true
# force a full wipe
140 partition
=false
# change to true to force a full wipe
148 for disk
in [sv
]d
[a-z
]; do
149 case $
(cat $disk/queue
/rotational
) in
150 0) ssds
+=(/dev
/$disk) ;;
151 1) hdds
+=(/dev
/$disk) ;;
152 *) echo "$0: error: unknown /sys/block/$disk/queue/rotational: \
153 $(cat $disk/queue/rotational)"; exit 1 ;;
157 # install all ssds, or if there are none, all hdds.
158 # Note, usb flash disks are seen as rotational, which is
159 # very odd, but convenient for ignoring them here.
160 # TODO: find a reliable way to ignore them.
161 if ! ifclass ROTATIONAL
&& (( ${#ssds[@]} > 0 )); then
162 short_devs
=( ${ssds[@]} )
164 short_devs
=( ${hdds[@]} )
167 # check if the partitions exist have the right filesystems
168 #blkid="$(blkid -s TYPE)"
169 for dev
in ${short_devs[@]}; do
170 if $partition; then break; fi
171 y
=$
(readlink
-f $dev)
173 [[ ${#arr[@]} == "${lastn}" ]] || partition
=true
174 for (( i
=1; i
<= lastn
; i
++ )); do
175 [[ -e ${dev}$i ]] || partition
=true
177 # On one system, blkid is missing some partitions.
178 # maybe we need a flag, like FUZZY_BLKID or something, so we
179 # can check that at least some exist.
180 # for x in "`rootdev`: TYPE=\"crypto_LUKS\"" "`bootdev`: TYPE=\"btrfs\""; do
181 # echo "$blkid" | grep -Fx "$x" &>/dev/null || partition=true
185 if $partition && ifclass PARTITION_PROMPT
; then
186 echo "Press any key except ctrl-c to continue and partition these drives:"
187 echo " ${short_devs[*]}"
193 for short_dev
in ${short_devs[@]}; do
194 devs
+=($
(devbyid
$short_dev))
196 if [[ ! ${devs[@]} ]]; then
197 echo "$0: error: failed to detect devs" >&2
204 for dev
in ${devs[@]}; do
205 if ifclass frodo
; then
206 # I ran into a machine where the bios doesn't know about some disks,
207 # so 1st stage of grub also doesn't know about them.
208 # Also, grub does not support mounting degraded btrfs as far as
209 # I can tell with some googling.
210 # From within an arch install env, I could detect them by noting
211 # their partitions were mixed with the next disk in /dev/disk/by-path,
212 # and I have mixed model disks, and I could see the 8 models which showed
213 # up in the bios, and thus see which 2 models were missing.
214 # hdparm -I /dev/sdh will give model info in linux.
215 # However, in fai on jessie, /dev/disk/by-path dir doesn't exist,
216 # and I don't see another way, so I'm hardcoding them.
217 # We still put grub on them and partition them the same, for uniformity
218 # and in case they get moved to a system that can recognize them,
219 # we just exclude them from the boot filesystem.
222 for id
in ata-TOSHIBA_MD04ACA500_8539K4TQFS9A \
223 ata-TOSHIBA_MD04ACA500_Y5IFK6IJFS9A
; do
224 if [[ $
(readlink
-f $id) == "$(readlink -f $dev)" ]]; then
229 $bad_disk || boot_devs
+=(`bootdev`)
231 boot_devs
+=(`bootdev`)
233 if [[ $boot_devs && $first ]]; then
234 first_grub_extdev
=`grub_extdev`
239 if ifclass RAID0 ||
(( ${#boot_devs[@]} == 1 )); then
241 elif ifclass RAID1 ||
(( ${#boot_devs[@]} <= 3 )); then
245 # need double the space if we are raid 10, and then
246 # might as well give some extra.
247 boot_mib
=$
((boot_mib
* 3))
252 if [[ ! $DISTRO ]]; then
253 if ifclass VOL_STRETCH_BOOTSTRAP
; then
254 DISTRO
=debianstretch_bootstrap
255 elif ifclass VOL_STRETCH
; then
257 elif ifclass VOL_TESTING
; then
259 elif ifclass VOL_XENIAL
; then
261 elif ifclass VOL_BELENOS
; then
262 DISTRO
=trisquelbelenos
263 elif ifclass VOL_FLIDAS
; then
264 DISTRO
=trisquelflidas
266 echo "PARTITIONER ERROR: no distro class/var set" >&2
270 first_boot_dev
=${boot_devs[0]}
273 bpart
() { # btrfs a partition
275 0) mkfs.btrfs
-f $@
;;
276 1) mkfs.btrfs
-f -m raid1
-d raid1 $@
;;
277 10) mkfs.btrfs
-f -m raid10
-d raid10 $@
;;
282 # keyfiles generated like:
283 # head -c 2048 /dev/urandom | od | s dd of=/q/root/luks/host-demohost
284 luks_dir
=${LUKS_DIR:-/var/lib/fai/config/distro-install-common/luks}
286 if [[ ! -e $luks_dir/host-
$HOSTNAME ]]; then
287 echo "$0: error: no key for hostname at $luks_dir/host-$HOSTNAME" >&2
291 lukspw
=$
(cat $luks_dir/iank
)
292 # # ian: disabled by chaning to tpnew while I use the tp host.
293 # # note, corresponding changes in /b/ds/keyscript-{on,off}
294 if ifclass tpnew
; then
295 lukspw
=$
(cat $luks_dir/traci
)
297 if ifclass ziva
; then
298 lukspw
=$
(cat $luks_dir/ziva
)
300 if ifclass demohost
; then
305 first_root_crypt
=$
(root-cryptdev
${devs[0]})
307 # 1.5 x based on https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-disk-partitioning-setup-x86.html#sect-custom-partitioning-x86
308 swap_mib
=$
(( $
(grep ^MemTotal
: /proc
/meminfo | \
309 awk '{print $2}') * 3/(${#devs[@]} * 2 ) / 1024 ))
313 for dev
in ${devs[@]}; do
314 root_devs
+=(`rootdev`)
320 if [[ ! $SPECIAL_DISK ]]; then
321 for dev
in ${devs[@]}; do
322 # if we repartition to the same as an old partition,
323 # we don't want any old fses hanging around.
324 for (( i
=1; i
<= lastn
; i
++ )); do
325 x
=$
(add-part
$dev $i)
326 [[ -e $x ]] ||
continue
328 # wipefs has failed, manual run works, google suggests timing issue
329 while ! wipefs
-a $x; do
331 count_down
=$
((count_down
- 1))
332 (( count_down
> 0 )) ||
exit 1
339 for dev
in ${devs[@]}; do
340 if [[ $SPECIAL_DISK ]]; then
341 dev
=$
(devbyid
$SPECIAL_DISK)
344 # parted will round up the disk size. Do -1 so we can have
345 # fully 1MiB unit partitions for easy resizing of the last partition.
346 # Otherwise we would pass in -0 for the end argument for the last partition.
348 # Note: parted print error output is expected. example:
349 # Error: /dev/vda: unrecognised disk label
350 disk_mib
=$
(( $
(parted
-m $dev unit MiB print | \
351 sed -nr "s#^/dev/[^:]+:([0-9]+).*#\1#p") - 1))
352 root_end
=$
(( disk_mib
- swap_mib
- boot_mib
/ ${#boot_devs[@]} ))
353 swap_end
=$
(( root_end
+ swap_mib
))
355 parted
-s $dev mklabel gpt
356 # MiB because parted complains about alignment otherwise.
357 pcmd
="parted -a optimal -s -- $dev"
358 $pcmd mkpart primary ext3
12MiB
${root_end}MiB
359 # without naming, systemd gives us misc errors like:
360 # dev-disk-by\x2dpartlabel-primary.device: Dev dev-disk-by\x2dpartlabel-primary.device appeared twice
361 $pcmd name
$rootn root
362 # normally a swap is type "linux-swap", but this is encrypted swap. using that
363 # label will confuse systemd.
364 $pcmd mkpart primary
"" ${root_end}MiB
${swap_end}MiB
365 $pcmd name
$swapn swap
366 $pcmd mkpart primary
"" ${swap_end}MiB
${disk_mib}MiB
367 $pcmd name
$bootn boot
368 # i only need a few k, but googling min size,
369 # I found someone saying that gparted required
370 # required at least 8 because of their hard drive cylinder size.
371 # And 8 is still very tiny.
372 $pcmd mkpart primary
"ext2" 4MiB
12MiB
373 $pcmd name
$grub_extn grubext
374 # gpt ubuntu cloud image uses ~4 mb for this partition. fai uses 1 MiB.
375 # so, I use 3, whatever.
376 # note: parted manual saying cheap flash media
377 # should to start at 4.
378 $pcmd mkpart primary
"" 1MiB
4MiB
379 $pcmd name
$bios_grubn biosgrub
380 $pcmd set $bios_grubn bios_grub on
381 $pcmd set $bootn boot on
# generally not needed on modern systems
382 # the mkfs failed before on a vm, which prompted me to add
384 # then it failed again on a physical machine
386 # Device /dev/disk/by-id/foo doesn't exist or access denied,
387 # so I added a wait until it existed.
388 # Then I added the mkfs.ext2, which claimed to succeed,
389 # but then couldn't be found upon reboot. In that case we didn't
390 # wait at all. So I've added a 3 second minimum wait.
393 while [[ ! -e `rootdev` ]] && (( secs
< 10 )); do
397 # Holds just a single file, rarely written, so
398 # use ext2, like was often used for the /boot partition.
399 # This exists because grub can only persist data to a non-cow fs.
400 # And we use persisting a var in grub to do a one time boot.
401 # We could pass the data on the kernel command line and persist it
402 # to grubenv after booting, but that relies on the boot always succeeding.
403 # This is just a bit more robust, and it could work for booting
404 # into ipxe which can't persist data, if we ever got that working.
405 mkfs.ext2
`grub_extdev`
406 # when we move to newer than trisquel 8, we can remove
407 # --type luks1. We can also check on cryptsetup --help | less /compil
408 # to see about the other settings. Default in debian 9 is luks2.
409 # You can convert from luks2 to luks 1 by adding a temporary key:
410 # cryptsetup luksAddKey --pbkdf pbkdf2
411 # then remove the new format keys with cryptsetup luksRemoveKey
412 # then cryptsetup convert DEV --type luks1, then readd old keys and remove temp.
413 yes YES | cryptsetup luksFormat
`rootdev` $luks_dir/host-
$HOSTNAME \
414 --type luks1
-c aes-cbc-essiv
:sha256
-s 256 ||
[[ $?
== 141 ]]
416 cryptsetup luksAddKey
--key-file $luks_dir/host-
$HOSTNAME \
417 `rootdev` ||
[[ $?
== 141 ]]
418 # background: Keyfile and password are treated just
419 # like 2 ways to input a passphrase, so we don't actually need to have
420 # different contents of keyfile and passphrase, but it makes some
421 # security sense to a really big randomly generated passphrase
422 # as much as possible, so we have both.
424 # This would remove the keyfile.
425 # yes 'test' | cryptsetup luksRemoveKey /dev/... \
426 # /key/file || [[ $? == 141 ]]
428 cryptsetup luksOpen
`rootdev` `root-cryptname` \
429 --key-file $luks_dir/host-
$HOSTNAME
431 if [[ $SPECIAL_DISK ]]; then
435 ls -la /dev
/btrfs-control
# this was probably for debugging...
437 bpart $
(for dev
in ${devs[@]}; do root-cryptdev
; done)
438 bpart
${boot_devs[@]}
440 for dev
in ${devs[@]}; do
441 mkfs.ext2
`grub_extdev`
442 cryptsetup luksOpen
`rootdev` `root-cryptname` \
443 --key-file $luks_dir/host-
$HOSTNAME
449 if [[ $DISTRO != debianstretch_bootstrap
]]; then
450 # bootstrap distro doesn't use separate encrypted root.
451 mount
-o subvolid
=0 $first_root_crypt /mnt
452 # systemd creates subvolumes we want to delete.
453 s
=($
(btrfs subvolume list
--sort=-path /mnt |
454 sed -rn "s#^.*path\s*(root_$DISTRO/\S+)\s*\$#\1#p"))
455 for subvol
in ${s[@]}; do btrfs subvolume delete
/mnt
/$subvol; done
456 btrfs subvolume set-default
0 /mnt
457 [[ ! -e /mnt
/root_
$DISTRO ]] || btrfs subvolume delete
/mnt
/root_
$DISTRO
462 btrfs subvolume create root_
$DISTRO
464 mkdir
-p /mnt
/root_
$DISTRO/boot
465 # could set default subvol like this, but no reason to.
466 # btrfs subvolume set-default \
467 # $(btrfs subvolume list . | grep "root_$DISTRO$" | awk '{print $2}') .
469 # no cow on the root filesystem. it's setup is fully scripted,
470 # if it's messed up, we will just recreated it,
471 # and we can get better perf with this.
472 # I can't remember exactly why, but this is preferable to mounting with
473 # -o nodatacow, I think because subvolumes inherit that.
474 chattr -Rf +C root_
$DISTRO
479 mount
-o subvolid
=0 $first_boot_dev /mnt
481 btrfs subvolume set-default
0 /mnt
# already default, just ensuring it.
483 # for libreboot systems. grub2 only reads from subvolid=0
485 cp $FAI/distro-install-common
/libreboot_grub.cfg
/mnt
/grub2
487 if [[ $DISTRO == debianstretch_bootstrap
]]; then
488 # this is just convenience for the libreboot_grub config
489 # so we can glob the other ones easier.
492 boot_vol
=boot_
$DISTRO
494 [[ ! -e /mnt
/$boot_vol ]] || btrfs subvolume delete
/mnt
/$boot_vol
495 btrfs subvolume create
$boot_vol
498 ## end create subvols ##
501 mount
$first_grub_extdev /mnt
502 grub-editenv
/mnt
/grubenv
set did_fai_check
=true
503 grub-editenv
/mnt
/grubenv
set last_boot
=/$boot_vol
506 if [[ $DISTRO == debianstretch_bootstrap
]]; then
507 cat > /tmp
/fai
/fstab
<<EOF
508 $first_boot_dev / btrfs noatime,subvol=$boot_vol 0 0
510 cat >/tmp
/fai
/disk_var.sh
<<EOF
511 BOOT_DEVICE="${short_devs[@]}"
512 ROOT_PARTITION=$first_boot_dev
515 # note, fai creates the mountpoints listed here
516 cat > /tmp
/fai
/fstab
<<EOF
517 $first_root_crypt / btrfs noatime,subvol=root_$DISTRO 0 0
518 $first_root_crypt /mnt/root btrfs noatime,subvolid=0 0 0
519 $first_boot_dev /boot btrfs noatime,subvol=$boot_vol 0 0
522 for dev
in ${devs[@]}; do
523 swaps
+=(`swap-cryptname`)
524 cat >>/tmp
/fai
/crypttab
<<EOF
525 `root-cryptname` `rootdev` none keyscript=/root/keyscript,discard,luks
526 `swap-cryptname` `swapdev` /dev/urandom swap,cipher=aes-xts-plain64,size=256,hash=ripemd160
528 cat >> /tmp
/fai
/fstab
<<EOF
529 `swap-cryptdev` none swap sw 0 0
534 #BOOT_DEVICE=\${BOOT_DEVICE:-"${devs[0]}"}
536 # note: swaplist seems to do nothing.
537 cat >/tmp
/fai
/disk_var.sh
<<EOF
538 BOOT_DEVICE="${short_devs[@]}"
539 BOOT_PARTITION=\${BOOT_PARTITION:-$first_boot_dev}
540 # ROOT_PARTITIONS is added by me, used in arch setup.
541 ROOT_PARTITIONS="${root_devs[@]}"
542 ROOT_PARTITION=\${ROOT_PARTITION:-$first_root_crypt}
543 SWAPLIST=\${SWAPLIST:-"${swaps[@]}"}