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.
20 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
22 if [[ $EUID != 0 ]]; then
23 echo "$0: error: need to run as root" >&2
27 # for calling outside of FAI:
28 # # need to redep and set that location so that we get luks keys
29 # export FAI=/srv/fai/config
31 # source /b/fai/fai-wrapper
32 # - set any appropriate classes with: fai-setclass OPT1... which sets CLASS_OPT1=true...
33 # or run eval-fai-classfile FILE
37 # environment variables:
39 # HOSTNAME: if frodo, we exclude 2 devices from the /boot array, which
40 # the bios does not see. if demohost, we set the luks password to just
43 # SPECIAL_DISK: For use outside of fai. A base disk name like
44 # /dev/sdk. If set, we just cryptsetup and partition this one disk then
45 # exit. This is useful for partitioning a disk in preparation to replace
46 # a failed or failing disk from a raid10 array.
50 # REPARTITION: forces repartitioning even if we detect the proper amount
51 # of partitions already exist.
53 # NOWIPE: use existing subvolumes if they exist
55 # ROTATIONAL: forces to install onto hdds instead of sdds. normally sdds
56 # are chosen if they exist.
58 # PARTITION_PROMPT: command line prompt before partitioning
60 # RAID0: forces raid0 filesystem. Normally with 4+ devices, we use
62 # RAID1: forces raid1 filesystem.
64 if [[ $SPECIAL_DISK ]]; then
65 export CLASS_REPARTITION
=true
68 # # fai's setup-storage won't do btrfs on luks,
69 # # so we do it ourself :)
70 # inspiration taken from files in fai-setup-storage package
72 # if we are not running in fai, skiptask won't be defined, so carry on.
73 skiptask partition ||
! type skiptask
75 if ! type -p devbyid
; then
76 for d
in $FAI/distro-install-common \
77 /a
/bin
/fai
/fai
/config
/distro-install-common
$FAI $PWD; do
78 [[ -d $d ]] ||
continue
79 if [[ -e $d/devbyid
]]; then
81 devbyid
() { $devbyid "$@"; }
85 if [[ ! $devbyid ]]; then
86 echo "$0: error: failed to find devbyid script" >&2
93 #### begin configuration
98 # ext partition so grub can write persistent variables,
99 # so it can do a one time boot. grub can't write to
100 # btrfs or any cow fs because it's more
101 # more complicated to do and they don't want to.
103 # bios boot partition,
104 # https://wiki.archlinux.org/index.php/GRUB
110 ##### end configuration
113 add-part
() { # add partition suffix to $dev
115 if [[ $# == 1 ]]; then
122 if [[ $d == /dev
/disk
/by-id
/* ]]; then
130 bootdev
() { add-part $@
$bootn; }
131 rootdev
() { add-part $@
$rootn; }
132 swapdev
() { add-part $@
$swapn; }
133 grub_extdev
() { add-part $@
$grub_extn; }
134 bios_grubdev
() { add-part $@
$bios_grubn; }
136 crypt-dev
() { echo /dev
/mapper
/crypt_dev_
${1##*/}; }
137 crypt-name
() { echo crypt_dev_
${1##*/}; }
138 root-cryptdev
() { crypt-dev $
(rootdev $@
); }
139 swap-cryptdev
() { crypt-dev $
(swapdev $@
); }
140 root-cryptname
() { crypt-name $
(rootdev $@
); }
141 swap-cryptname
() { crypt-name $
(swapdev $@
); }
143 ##### end function defs
145 if ifclass REPARTITION
; then
146 partition
=true
# force a full wipe
148 partition
=false
# change to true to force a full wipe
150 if ifclass NOWIPE
; then
156 ## ignore disks that are mounted, eg when running from fai-cd
157 declare -A disk_excludes
160 if [[ ! $PKNAME ]]; then
163 if [[ $MOUNTPOINT ]]; then
164 disk_excludes
[$PKNAME]=true
166 done < <(lsblk
-nP -o KNAME
,MOUNTPOINT
,PKNAME
)
172 for disk
in [sv
]d
[a-z
]; do
173 if [[ ${disk_excludes[$disk]} ]]; then
176 case $
(cat $disk/queue
/rotational
) in
177 0) ssds
+=(/dev
/$disk) ;;
178 1) hdds
+=(/dev
/$disk) ;;
179 *) echo "$0: error: unknown /sys/block/$disk/queue/rotational: \
180 $(cat $disk/queue/rotational)"; exit 1 ;;
184 # install all ssds, or if there are none, all hdds.
185 # Note, usb flash disks are seen as rotational, which is
186 # very odd, but convenient for ignoring them here.
187 # TODO: find a reliable way to ignore them.
188 if ! ifclass ROTATIONAL
&& (( ${#ssds[@]} > 0 )); then
189 short_devs
=( ${ssds[@]} )
191 short_devs
=( ${hdds[@]} )
194 # check if the partitions exist have the right filesystems
195 #blkid="$(blkid -s TYPE)"
196 for dev
in ${short_devs[@]}; do
197 if $partition; then break; fi
198 y
=$
(readlink
-f $dev)
200 [[ ${#arr[@]} == "$lastn" ]] || partition
=true
201 for (( i
=1; i
<= lastn
; i
++ )); do
202 [[ -e ${dev}$i ]] || partition
=true
204 # On one system, blkid is missing some partitions.
205 # maybe we need a flag, like FUZZY_BLKID or something, so we
206 # can check that at least some exist.
207 # for x in "`rootdev`: TYPE=\"crypto_LUKS\"" "`bootdev`: TYPE=\"btrfs\""; do
208 # echo "$blkid" | grep -Fx "$x" &>/dev/null || partition=true
212 if $partition && ifclass PARTITION_PROMPT
; then
213 echo "Press any key except ctrl-c to continue and partition these drives:"
214 echo " ${short_devs[*]}"
220 for short_dev
in ${short_devs[@]}; do
221 devs
+=($
(devbyid
$short_dev))
223 if [[ ! ${devs[0]} ]]; then
224 echo "$0: error: failed to detect devs" >&2
231 for dev
in ${devs[@]}; do
232 if ifclass frodo
; then
233 # I ran into a machine where the bios doesn't know about some disks,
234 # so 1st stage of grub also doesn't know about them.
235 # Also, grub does not support mounting degraded btrfs as far as
236 # I can tell with some googling.
237 # From within an arch install env, I could detect them by noting
238 # their partitions were mixed with the next disk in /dev/disk/by-path,
239 # and I have mixed model disks, and I could see the 8 models which showed
240 # up in the bios, and thus see which 2 models were missing.
241 # hdparm -I /dev/sdh will give model info in linux.
242 # However, in fai on jessie, /dev/disk/by-path dir doesn't exist,
243 # and I don't see another way, so I'm hardcoding them.
244 # We still put grub on them and partition them the same, for uniformity
245 # and in case they get moved to a system that can recognize them,
246 # we just exclude them from the boot filesystem.
249 for id
in ata-TOSHIBA_MD04ACA500_8539K4TQFS9A \
250 ata-TOSHIBA_MD04ACA500_Y5IFK6IJFS9A
; do
251 if [[ $
(readlink
-f $id) == "$(readlink -f $dev)" ]]; then
256 $bad_disk || boot_devs
+=($
(bootdev
))
258 boot_space
=$
(( boot_space
+ $
(parted
-m $dev unit MiB print | \
259 sed -nr "s#^/dev/[^:]+:([0-9]+).*#\1#p") - 1))
260 boot_devs
+=($
(bootdev
))
262 if [[ $boot_devs && $first ]]; then
263 first_grub_extdev
=$
(grub_extdev
)
268 if ifclass RAID0 ||
(( ${#boot_devs[@]} == 1 )); then
270 elif ifclass RAID1 ||
(( ${#boot_devs[@]} <= 3 )); then
276 ### Begin calculate boot partition space
277 # due to raid duplication
279 1*) boot_space
=$
(( boot_space
/ 2 )) ;;
281 if (( boot_space
> 60000 )); then
282 # this is larger than needed for several /boot subvols,
283 # becuase I keep a minimal debian install on it for
284 # recovery needs and for doing pxe-kexec.
286 elif (( boot_space
> 30000 )); then
287 boot_mib
=$
(( 5000 + (boot_space
- 30000) / 2 ))
289 # Small vms don't have room for /boot recovery. With 3 kernels
290 # installed, i'm using 132M on t8, so this seems like plenty of
291 # room. note: rhel 8 recomments 1g for /boot.
296 1*) boot_mib
=$
(( boot_mib
* 2 )) ;;
298 ### end calculate boot partition space
302 if [[ ! $DISTRO ]]; then
303 if ifclass VOL_STRETCH_BOOTSTRAP
; then
304 DISTRO
=debianstretch_bootstrap
305 elif ifclass VOL_STRETCH
; then
307 elif ifclass VOL_BUSTER
; then
309 elif ifclass VOL_TESTING
; then
311 elif ifclass VOL_XENIAL
; then
313 elif ifclass VOL_BIONIC
; then
315 elif ifclass VOL_FOCAL
; then
317 elif ifclass VOL_BELENOS
; then
318 DISTRO
=trisquelbelenos
319 elif ifclass VOL_FLIDAS
; then
320 DISTRO
=trisquelflidas
321 elif ifclass VOL_ETIONA
; then
322 DISTRO
=trisqueletiona
324 echo "PARTITIONER ERROR: no distro class/var set" >&2
328 first_boot_dev
=${boot_devs[0]}
331 bpart
() { # btrfs a partition
333 0) mkfs.btrfs
-f $@
;;
334 1) mkfs.btrfs
-f -m raid1
-d raid1 $@
;;
335 10) mkfs.btrfs
-f -m raid10
-d raid10 $@
;;
340 if [[ ! -e /a
/bin
/fai
/fai-wrapper
]]; then
341 # see README for docs about how to create these
342 luks_dir
=$FAI/distro-install-common
/luks
344 luks_file
=$luks_dir/host-
$HOSTNAME
345 if [[ ! -e $luks_file ]]; then
346 hostkeys
=($luks_dir/host-
*)
347 # if there is only one key, we might be deploying somewhere
348 # where dhcp doesnt give us a proper hostname, so use that.
349 if [[ ${#hostkeys[@]} == 1 && -e ${hostkeys[0]} ]]; then
350 luks_file
=${hostkeys[0]}
352 echo "$0: error: no key for hostname at $luks_file" >&2
357 # # note, corresponding changes in /b/ds/keyscript-{on,off}
358 if ifclass demohost
; then
360 elif [[ -e $luks_dir/$HOSTNAME ]]; then
361 lukspw
=$
(cat $luks_dir/$HOSTNAME)
363 lukspw
=$
(cat $luks_dir/iank
)
368 first_root_crypt
=$
(root-cryptdev
${devs[0]})
370 # 1.5 x based on https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-disk-partitioning-setup-x86.html#sect-custom-partitioning-x86
371 swap_mib
=$
(( $
(grep ^MemTotal
: /proc
/meminfo | \
372 awk '{print $2}') * 3/(${#devs[@]} * 2 ) / 1024 ))
376 for dev
in ${devs[@]}; do
377 root_devs
+=($
(rootdev
))
383 if [[ ! $SPECIAL_DISK ]]; then
384 for dev
in ${devs[@]}; do
385 # if we repartition to the same as an old partition,
386 # we don't want any old fses hanging around.
387 for (( i
=1; i
<= lastn
; i
++ )); do
388 x
=$
(add-part
$dev $i)
389 [[ -e $x ]] ||
continue
391 # wipefs has failed, manual run works, google suggests timing issue
392 while ! wipefs
-a $x; do
394 count_down
=$
((count_down
- 1))
395 (( count_down
> 0 )) ||
exit 1
402 for dev
in ${devs[@]}; do
403 if [[ $SPECIAL_DISK ]]; then
404 dev
=$
(devbyid
$SPECIAL_DISK)
407 # parted will round up the disk size. Do -1 so we can have
408 # fully 1MiB unit partitions for easy resizing of the last partition.
409 # Otherwise we would pass in -0 for the end argument for the last partition.
411 # Note: parted print error output is expected. example:
412 # Error: /dev/vda: unrecognised disk label
413 disk_mib
=$
(( $
(parted
-m $dev unit MiB print | \
414 sed -nr "s#^/dev/[^:]+:([0-9]+).*#\1#p") - 1))
415 root_end
=$
(( disk_mib
- swap_mib
- boot_mib
/ ${#boot_devs[@]} ))
416 swap_end
=$
(( root_end
+ swap_mib
))
418 parted
-s $dev mklabel gpt
419 # MiB because parted complains about alignment otherwise.
420 pcmd
="parted -a optimal -s -- $dev"
421 $pcmd mkpart primary ext3
12MiB
${root_end}MiB
422 # without naming, systemd gives us misc errors like:
423 # dev-disk-by\x2dpartlabel-primary.device: Dev dev-disk-by\x2dpartlabel-primary.device appeared twice
424 $pcmd name
$rootn root
425 # normally a swap is type "linux-swap", but this is encrypted swap. using that
426 # label will confuse systemd.
427 $pcmd mkpart primary
"" ${root_end}MiB
${swap_end}MiB
428 $pcmd name
$swapn swap
429 $pcmd mkpart primary
"" ${swap_end}MiB
${disk_mib}MiB
430 $pcmd name
$bootn boot
431 # i only need a few k, but googling min size,
432 # I found someone saying that gparted required
433 # required at least 8 because of their hard drive cylinder size.
434 # And 8 is still very tiny.
435 $pcmd mkpart primary
"ext2" 4MiB
12MiB
436 $pcmd name
$grub_extn grubext
437 # gpt ubuntu cloud image uses ~4 mb for this partition. fai uses 1 MiB.
438 # so, I use 3, whatever.
439 # note: parted manual saying cheap flash media
440 # should to start at 4.
441 $pcmd mkpart primary
"" 1MiB
4MiB
442 $pcmd name
$bios_grubn biosgrub
443 $pcmd set $bios_grubn bios_grub on
444 $pcmd set $bootn boot on
# generally not needed on modern systems
445 # the mkfs failed before on a vm, which prompted me to add
447 # then it failed again on a physical machine
449 # Device /dev/disk/by-id/foo doesn't exist or access denied,
450 # so I added a wait until it existed.
451 # Then I added the mkfs.ext2, which claimed to succeed,
452 # but then couldn't be found upon reboot. In that case we didn't
453 # wait at all. So I've added a 3 second minimum wait.
456 while [[ ! -e $
(rootdev
) ]] && (( secs
< 10 )); do
460 # Holds just a single file, rarely written, so
461 # use ext2, like was often used for the /boot partition.
462 # This exists because grub can only persist data to a non-cow fs.
463 # And we use persisting a var in grub to do a one time boot.
464 # We could pass the data on the kernel command line and persist it
465 # to grubenv after booting, but that relies on the boot always succeeding.
466 # This is just a bit more robust, and it could work for booting
467 # into ipxe which can't persist data, if we ever got that working.
468 mkfs.ext2 $
(grub_extdev
)
469 # when we move to newer than trisquel 8, we can remove
470 # --type luks1. We can also check on cryptsetup --help | less /compil
471 # to see about the other settings. Default in debian 9 is luks2.
472 # You can convert from luks2 to luks 1 by adding a temporary key:
473 # cryptsetup luksAddKey --pbkdf pbkdf2
474 # then remove the new format keys with cryptsetup luksRemoveKey
475 # then cryptsetup convert DEV --type luks1, then readd old keys and remove temp.
476 yes YES | cryptsetup luksFormat $
(rootdev
) $luks_file \
477 --type luks1
-c aes-cbc-essiv
:sha256
-s 256 ||
[[ $?
== 141 ]]
479 cryptsetup luksAddKey
--key-file $luks_file \
480 $
(rootdev
) ||
[[ $?
== 141 ]]
481 # background: Keyfile and password are treated just
482 # like 2 ways to input a passphrase, so we don't actually need to have
483 # different contents of keyfile and passphrase, but it makes some
484 # security sense to a really big randomly generated passphrase
485 # as much as possible, so we have both.
487 # This would remove the keyfile.
488 # yes 'test' | cryptsetup luksRemoveKey /dev/... \
489 # /key/file || [[ $? == 141 ]]
491 cryptsetup luksOpen $
(rootdev
) $
(root-cryptname
) \
492 --key-file $luks_file
494 if [[ $SPECIAL_DISK ]]; then
498 ls -la /dev
/btrfs-control
# this was probably for debugging...
500 bpart $
(for dev
in ${devs[@]}; do root-cryptdev
; done)
501 bpart
${boot_devs[@]}
503 for dev
in ${devs[@]}; do
504 if [[ -e /dev
/mapper
/$
(root-cryptname
) ]]; then
507 cryptsetup luksOpen $
(rootdev
) $
(root-cryptname
) \
508 --key-file $luks_file
514 if $wipe && [[ $DISTRO != debianstretch_bootstrap
]]; then
515 # bootstrap distro doesn't use separate encrypted root.
516 mount
-o subvolid
=0 $first_root_crypt /mnt
517 # systemd creates subvolumes we want to delete.
518 s
=($
(btrfs subvolume list
--sort=-path /mnt |
519 sed -rn "s#^.*path\s*(root_$DISTRO/\S+)\s*\$#\1#p"))
520 for subvol
in ${s[@]}; do btrfs subvolume delete
/mnt
/$subvol; done
521 btrfs subvolume set-default
0 /mnt
522 [[ ! -e /mnt
/root_
$DISTRO ]] || btrfs subvolume delete
/mnt
/root_
$DISTRO
527 btrfs subvolume create root_
$DISTRO
529 # could set default subvol like this, but no reason to.
530 # btrfs subvolume set-default \
531 # $(btrfs subvolume list . | grep "root_$DISTRO$" | awk '{print $2}') .
533 # no cow on the root filesystem. it's setup is fully scripted,
534 # if it's messed up, we will just recreated it,
535 # and we can get better perf with this.
536 # I can't remember exactly why, but this is preferable to mounting with
537 # -o nodatacow, I think because subvolumes inherit that.
538 chattr -Rf +C root_
$DISTRO
543 mount
-o subvolid
=0 $first_boot_dev /mnt
545 btrfs subvolume set-default
0 /mnt
# already default, just ensuring it.
547 # for libreboot systems. grub2 only reads from subvolid=0
549 cp $FAI/distro-install-common
/libreboot_grub.cfg
/mnt
/grub2
551 if [[ $DISTRO == debianstretch_bootstrap
]]; then
552 # this is just convenience for the libreboot_grub config
553 # so we can glob the other ones easier.
556 boot_vol
=boot_
$DISTRO
558 if $wipe && [[ -e /mnt
/$boot_vol ]]; then
559 btrfs subvolume delete
/mnt
/$boot_vol
561 if [[ ! -e /mnt
/$boot_vol ]]; then
562 btrfs subvolume create
$boot_vol
566 ## end create subvols ##
569 mount
$first_grub_extdev /mnt
570 grub-editenv
/mnt
/grubenv
set did_fai_check
=true
571 grub-editenv
/mnt
/grubenv
set last_boot
=/$boot_vol
574 if [[ $DISTRO == debianstretch_bootstrap
]]; then
575 cat > /tmp
/fai
/fstab
<<EOF
576 $first_boot_dev / btrfs noatime,subvol=$boot_vol 0 0
578 cat >/tmp
/fai
/disk_var.sh
<<EOF
579 BOOT_DEVICE="${short_devs[@]}"
580 ROOT_PARTITION=$first_boot_dev
583 # note, fai creates the mountpoints listed here
584 cat > /tmp
/fai
/fstab
<<EOF
585 $first_root_crypt / btrfs noatime,subvol=root_$DISTRO 0 0
586 $first_root_crypt /mnt/root btrfs nofail,noatime,subvolid=0 0 0
587 $first_boot_dev /boot btrfs nofail,noatime,subvol=$boot_vol 0 0
588 $first_boot_dev /mnt/boot btrfs nofail,noatime,subvolid=0 0 0
591 rm -f /tmp
/fai
/crypttab
592 for dev
in ${devs[@]}; do
593 swaps
+=($
(swap-cryptname
))
594 cat >>/tmp
/fai
/crypttab
<<EOF
595 $(root-cryptname) $(rootdev) none keyscript=/root/keyscript,discard,luks,initramfs
596 $(swap-cryptname) $(swapdev) /dev/urandom swap,cipher=aes-xts-plain64,size=256,hash=ripemd160
598 cat >> /tmp
/fai
/fstab
<<EOF
599 $(swap-cryptdev) none swap nofail,sw 0 0
604 #BOOT_DEVICE=\${BOOT_DEVICE:-"${devs[0]}"}
606 # note: swaplist seems to do nothing.
607 cat >/tmp
/fai
/disk_var.sh
<<EOF
608 BOOT_DEVICE="${short_devs[@]}"
609 BOOT_PARTITION=\${BOOT_PARTITION:-$first_boot_dev}
610 # ROOT_PARTITIONS is added by me, used in arch setup.
611 ROOT_PARTITIONS="${root_devs[@]}"
612 ROOT_PARTITION=\${ROOT_PARTITION:-$first_root_crypt}
613 SWAPLIST=\${SWAPLIST:-"${swaps[@]}"}