2 set -e -f ${DRY_RUN:+-n} -u
4 .
"$tool"/lib
/functions.sh
6 test "$(hostname --fqdn)" = "$vm_host"
10 DESCRIPTION: ce script regroupe des fonctions utilitaires
11 pour gérer la VM _depuis_ son hôte ;
12 il sert à la fois d'outil et de documentation.
13 Voir \`$tool/vm_hosted' pour les utilitaires côté VM hébergée.
14 SYNTAX: $0 \$RULE \${RULE}_SYNTAX
16 $(sed -ne 's/^rule_\([^_][^ ]*\) () {\( *#.*\|\)/\t\1\2/p' "$tool"/vm.sh "$0")
18 TRACE # affiche les commandes avant leur exécution
19 $(sed -ne 's/^readonly \([^ ][^ =]*\).*}\( *#.*\|\)$/\t$\1\2/p' "$tool"/vm.sh "$0")
23 readonly vm_dev_disk
=/dev
/mapper
/domU-$
(printf %s
"$vm_fqdn-disk" |
sed -e 's/-/--/g')
24 readonly vm_dev_disk_boot
="${vm_dev_disk}1"
29 #git checkout -f -B master origin
30 # NOTE: pas de -B sous squeeze
31 git checkout HEAD
'^' &&
32 git branch
-f master origin
&&
39 mk_reg mod
=644 own
=root
:root
/etc
/xen
/$vm_fqdn.cfg
<<-EOF
40 # -*- mode: python; -*-
41 # DOC: http://wiki.xen.org/wiki/Xen_Linux_PV_on_HVM_drivers
50 vif = ['mac=$vm_mac,bridge=$vm_bridge']
51 disk = ['phy:/dev/domU/$vm_fqdn-disk,hda,w']
52 device_model = 'qemu-dm'
54 #kernel = "/usr/lib/xen-4.0/boot/hvmloader"
56 #xen_platform_pci = 1 # NOTE: the guest VM can use optimized PV on HVM drivers
58 #kernel = "pv-grub.gz" # NOTE: pas encore dans Debian car il ne fonctionne qu'avec grub-legacy
59 #extra = "(hd0,0)/grub/grub.cfg"
60 bootloader = '/usr/bin/pygrub'
62 # boot on floppy (a), hard disk (c) or CD-ROM (d)
68 #vnclisten = "0.0.0.0"
74 on_poweroff = 'destroy'
80 test ! -e /dev
/domU
/$vm_fqdn-disk1
81 sudo xm create
$vm_fqdn.cfg
86 NOTE: Ctrl-] pour se détacher de la console
88 sudo xm console
$vm_fqdn
91 sudo xm shutdown
$vm_fqdn
93 rule_vm_stop_force
() {
94 sudo xm destroy
$vm_fqdn
97 rule_disk_mount
() { # DESCRIPTION: montage du disque de la VM depuis l'hôte
98 sudo kpartx
-a -v /dev
/domU
/$vm_fqdn-disk
99 #sudo xm block-attach 0 phy:/dev/domU/$vm_fqdn-disk $vm_dev_disk w
101 rule_disk_umount
() { # DESCRIPTION: démontage du disque de la VM depuis l'hôte
102 rule_part_boot_umount
108 rule_part_root_umount
110 rule_part_home_umount
114 sudo kpartx
-d -v /dev
/domU
/$vm_fqdn-disk
115 #sudo xm block-detach 0 $vm_dev_disk
116 # XXX: DANGEREUX ; si jamais il bloque parce que le disque était encore utilisé :
117 # utiliser xm block-detach 0 $vm_dev_disk --force ;
118 # ôter les éventuels mappages LVM concernés avec dmsetup table et dmsetup remove --force ;
119 # ôter les mappages concernés dans /etc/lvm/cache/.cache,
120 # et pour bien trouver tous les mappages :
121 # % sudo find /dev -type l -exec sh -c 'printf "%s -> " "$@"; readlink "$@"' - {} \; | grep $vm_dev_disk
122 # enfin, ôter l'éventuel verrou dans /var/lock/lvm/
127 readonly vm_dev_disk_swap
="${vm_dev_disk}5"
128 readonly vm_dev_disk_root
="${vm_dev_disk}6"
129 readonly vm_dev_disk_var
="${vm_dev_disk}7"
130 readonly vm_dev_disk_home
="${vm_dev_disk}8"
133 readonly vm_lvm_pv
="${vm_dev_disk}2"
134 readonly vm_dev_disk_swap
=/dev
/$vm_lvm_vg/${vm_lvm_lv}_swap
135 readonly vm_dev_disk_root
=/dev
/$vm_lvm_vg/${vm_lvm_lv}_root
136 readonly vm_dev_disk_var
=/dev
/$vm_lvm_vg/${vm_lvm_lv}_var
137 readonly vm_dev_disk_home
=/dev
/$vm_lvm_vg/${vm_lvm_lv}_home
142 rule_disk_format
() { # DESCRIPTION: partitionnage du disque de la VM
145 sudo sfdisk
$vm_dev_disk <<-EOF
146 # partition table of $vm_dev_disk
149 ${vm_dev_disk}1 : start= 63, size= 497952, Id=83, bootable
150 ${vm_dev_disk}2 : start= 498015, size=418927005, Id= 5
151 ${vm_dev_disk}3 : start= 0, size= 0, Id= 0
152 ${vm_dev_disk}4 : start= 0, size= 0, Id= 0
153 ${vm_dev_disk}5 : start= 498078, size= 1959867, Id=82
154 ${vm_dev_disk}6 : start= 2458008, size= 29302497, Id=83
155 ${vm_dev_disk}7 : start= 31760568, size= 9767457, Id=83
156 ${vm_dev_disk}8 : start= 41528088, size=377896932, Id=83
160 sudo sfdisk
$vm_dev_disk <<-EOF
161 # partition table of $vm_dev_disk
164 ${vm_dev_disk}1 : start= 63, size= 497952, Id=83, bootable
165 ${vm_dev_disk}2 : start= 498015, size=418927005, Id=8E
170 #sudo partprobe $vm_dev_disk
171 sudo kpartx
-u -v /dev
/domU
/$vm_fqdn-disk
174 rule_part_lvm_format
() {
176 ! sudo vgs |
grep -q "^ $vm_lvm_vg " ||
177 sudo vgremove
$vm_lvm_vg
178 sudo pvcreate
--dataalignment 512k
$vm_lvm_pv
179 sudo vgcreate
--dataalignment 512k
$vm_lvm_vg $vm_lvm_pv
180 sudo lvcreate
--contiguous y
-n ${vm_lvm_lv}_swap
-L 1G
$vm_lvm_vg
181 sudo lvcreate
--contiguous y
-n ${vm_lvm_lv}_root
-L 15G
$vm_lvm_vg
182 sudo lvcreate
--contiguous y
-n ${vm_lvm_lv}_var
-L 5G
$vm_lvm_vg
183 sudo lvcreate
--contiguous y
-n ${vm_lvm_lv}_home
-l 99%FREE
$vm_lvm_vg
186 rule_part_lvm_mount
() {
189 sudo vgchange
-a y
$vm_lvm_vg
194 rule_part_lvm_umount
() {
197 rule_part_root_umount
199 rule_part_home_umount
200 ! sudo vgs |
grep -q "^ $vm_lvm_vg " ||
201 sudo vgchange
-a n
$vm_lvm_vg
207 rule_part_randomize
() { # SYNTAX: $part # NOTE: à anticiper
209 eval "sudo dd if=/dev/urandom of=\$vm_dev_disk_$part"
211 rule_part_randomize_stat
() { # SYNTAX: $part # DESCRIPTION: fait afficher la progression de rule_part_clean
213 eval "pkill -USR1 -f \"^dd if=/dev/urandom of=\$vm_dev_disk_$part\""
215 rule__part_encrypted_format
() { # SYNTAX: $part # DESCRIPTION: formatage d'une partition distincte de /
216 # NOTE: la clef de chiffrement est dérivée de celle de /,
217 # / doit être déchiffrée pour que cela fonctionne.
219 eval "local dev=\$vm_dev_disk_$part"
220 test ! -e /dev
/mapper
/${vm_lvm_lv}_root_deciphered ||
221 sudo
/bin
/sh
-c "/lib/cryptsetup/scripts/decrypt_derived ${vm_lvm_lv}_root_deciphered |
222 cryptsetup luksFormat --hash=sha512 --key-size=512 \
223 --cipher=aes-xts-essiv:sha256 --key-file=- --align-payload=8 $dev"
225 rule__part_encrypted_mount
() { # SYNTAX: $part
227 eval "local dev=\$vm_dev_disk_$part"
228 test -e /dev
/mapper
/${vm_lvm_lv}_
${part}_deciphered ||
229 sudo
/bin
/sh
-c "/lib/cryptsetup/scripts/decrypt_derived ${vm_lvm_lv}_root_deciphered |
230 cryptsetup luksOpen --key-file=- $dev ${vm_lvm_lv}_${part}_deciphered"
232 rule__part_encrypted_umount
() { # SYNTAX: $part
234 eval "local dev=\$vm_dev_disk_$part"
235 test ! -e /dev
/mapper
/${vm_lvm_lv}_
${part}_deciphered ||
236 sudo cryptsetup luksClose
${vm_lvm_lv}_
${part}_deciphered
239 rule_part_root_format
() {
240 if ! mount |
grep -q "^$vm_dev_disk_root "
242 sudo cryptsetup luksFormat
--hash=sha512
--key-size=512 \
243 --cipher=aes-xts-essiv
:sha256
--key-file=- --align-payload=8 $vm_dev_disk_root
244 sudo cryptsetup luksOpen
--key-file=- $vm_dev_disk_root ${vm_lvm_lv}_root_deciphered
245 sudo mke2fs
-t ext4
-c -c -m 5 -T ext4
-b $vm_e2fs_block_size \
246 -E resize
=30G
${vm_e2fs_extended_options} \
247 -L ${vm_lvm_lv}_root \
248 /dev
/mapper
/${vm_lvm_lv}_root_deciphered
249 ! mountpoint
-q /mnt
/$vm_fqdn
250 sudo mount
-v /dev
/mapper
/${vm_lvm_lv}_root_deciphered
/mnt
/$vm_fqdn
251 mk_dir mod
=0770 own
=root
:root
/mnt
/$vm_fqdn/boot
252 mk_dir mod
=0770 own
=root
:root
/mnt
/$vm_fqdn/dev
253 mk_dir mod
=0770 own
=root
:root
/mnt
/$vm_fqdn/home
254 mk_dir mod
=0770 own
=root
:root
/mnt
/$vm_fqdn/proc
255 mk_dir mod
=0770 own
=root
:root
/mnt
/$vm_fqdn/sys
256 mk_dir mod
=0770 own
=root
:root
/mnt
/$vm_fqdn/var
257 mk_dir mod
=0770 own
=root
:root
/mnt
/$vm_fqdn/root
258 mk_dir mod
=0770 own
=root
:root
/mnt
/$vm_fqdn/root
/tool
259 mk_dir mod
=0770 own
=root
:root
/mnt
/$vm_fqdn/root
/tool
/ateliers
260 sudo umount
-v /mnt
/$vm_fqdn
261 sudo cryptsetup luksClose
${vm_lvm_lv}_root_deciphered
264 rule_part_root_mount
() {
265 test -e /dev
/mapper
/${vm_lvm_lv}_root_deciphered ||
266 sudo cryptsetup luksOpen
$vm_dev_disk_root ${vm_lvm_lv}_root_deciphered
267 mountpoint
-q /mnt
/$vm_fqdn ||
268 sudo mount
-v -t ext4
/dev
/mapper
/${vm_lvm_lv}_root_deciphered
/mnt
/$vm_fqdn
270 rule_part_root_umount
() {
271 ! mountpoint
-q /mnt
/$vm_fqdn ||
272 sudo umount
-v /mnt
/$vm_fqdn
273 ! test -e /dev
/mapper
/${vm_lvm_lv}_root_deciphered ||
274 sudo cryptsetup luksClose
${vm_lvm_lv}_root_deciphered
276 rule_part_root_backup_luks
() {
277 sudo cryptsetup luksHeaderBackup
$vm_dev_disk_root --header-backup-file .
/root.luks
279 rule_part_swap_format
() {
280 rule__part_encrypted_format swap
281 rule__part_encrypted_mount swap
282 sudo mkswap
-f -L ${vm_lvm_lv}_swap \
283 /dev
/mapper
/${vm_lvm_lv}_swap_deciphered
284 rule__part_encrypted_umount swap
286 rule_part_boot_format
() {
287 mount |
grep -q "^$vm_dev_disk_boot " ||
288 sudo mke2fs
-t ext2
-c -c -m 5 -T small \
289 -E resize
=1G
${vm_e2fs_extended_options} \
290 -L ${vm_lvm_lv}_boot
$vm_dev_disk_boot
292 rule_part_boot_mount
() {
293 mountpoint
-q /mnt
/$vm_fqdn
294 test -d /mnt
/$vm_fqdn/boot
295 mountpoint
-q /mnt
/$vm_fqdn/boot ||
296 sudo mount
-v -t ext2
$vm_dev_disk_boot /mnt
/$vm_fqdn/boot
298 rule_part_boot_umount
() {
299 ! mountpoint
-q /mnt
/$vm_fqdn/boot ||
300 sudo umount
-v /mnt
/$vm_fqdn/boot
302 rule_part_var_format
() {
303 rule__part_encrypted_format var
304 rule__part_encrypted_mount var
305 sudo mke2fs
-t ext4
-c -c -m 5 -T ext4
-b $vm_e2fs_block_size \
306 -E resize
=10G
${vm_e2fs_extended_options} \
307 -L ${vm_lvm_lv}_var \
308 /dev
/mapper
/${vm_lvm_lv}_var_deciphered
309 rule__part_encrypted_umount var
311 rule_part_var_mount
() {
312 rule__part_encrypted_mount var
313 mountpoint
-q /mnt
/$vm_fqdn/var ||
314 sudo mount
-v -t ext4
/dev
/mapper
/${vm_lvm_lv}_var_deciphered
/mnt
/$vm_fqdn/var
316 rule_part_var_umount
() {
317 ! mountpoint
-q /mnt
/$vm_fqdn/var ||
318 sudo umount
-v /mnt
/$vm_fqdn/var
319 rule__part_encrypted_umount var
321 rule_part_home_format
() {
322 rule__part_encrypted_format home
323 rule__part_encrypted_mount home
324 sudo mke2fs
-t ext4
-c -c -m 0 -T ext4
-b $vm_e2fs_block_size \
325 -E resize
=400G
${vm_e2fs_extended_options} \
326 -L ${vm_lvm_lv}_home \
327 /dev
/mapper
/${vm_lvm_lv}_home_deciphered
328 # NOTE: -O quota pas supporté par e2fsprogs/squeeze
329 rule__part_encrypted_umount home
331 rule_part_home_mount
() {
332 rule__part_encrypted_mount home
333 mountpoint
-q /mnt
/$vm_fqdn/home ||
334 sudo mount
-v -t ext4
/dev
/mapper
/${vm_lvm_lv}_home_deciphered
/mnt
/$vm_fqdn/home
336 rule_part_home_umount
() {
337 ! mountpoint
-q /mnt
/$vm_fqdn/home ||
338 sudo umount
-v /mnt
/$vm_fqdn/home
339 rule__part_encrypted_umount home
342 rule_debian_install
() {
348 sudo DEBOOTSTRAP_DIR
=/usr
/share
/debootstrap
/ LANG
=C LC_CTYPE
=C debootstrap \
349 --arch=$vm_arch --verbose --keyring=/usr
/share
/keyrings
/debian-archive-keyring.gpg \
351 --include=$
(printf '%s,' \
389 $vm_lsb_name /mnt
/$vm_fqdn/ \
390 http
://ftp.fr.debian.org
/debian
/
392 rule_part_boot_umount
393 rule_part_root_umount
402 #rule_part_home_mount
403 mountpoint
-q /mnt
/$vm_fqdn/proc ||
404 sudo mount
-t proc proc
/mnt
/$vm_fqdn/proc
405 mountpoint
-q /mnt
/$vm_fqdn/sys ||
406 sudo mount
-t sysfs sys
/mnt
/$vm_fqdn/sys
407 mountpoint
-q /mnt
/$vm_fqdn/dev ||
408 sudo mount
--bind /dev
/mnt
/$vm_fqdn/dev
409 if test -d /mnt
/$vm_fqdn/root
/tool
/vm
/.git
411 mountpoint
-q /mnt
/$vm_fqdn/root
/tool
/vm ||
412 sudo mount
--bind "$tool" /mnt
/$vm_fqdn/root
/tool
/vm
414 rsync
-a "$tool"/ /mnt
/$vm_fqdn/root
/tool
/vm
416 sudo chroot
/mnt
/$vm_fqdn /bin
/bash || true
419 rule__chroot_clean
() {
420 ! sudo mountpoint
-q /mnt
/$vm_fqdn/root
/tool
/vm ||
421 sudo umount
-v /mnt
/$vm_fqdn/root
/tool
/$vm
422 ! mountpoint
-q /mnt
/$vm_fqdn/dev ||
423 sudo umount
-v /mnt
/$vm_fqdn/dev
424 ! mountpoint
-q /mnt
/$vm_fqdn/sys ||
425 sudo umount
-v /mnt
/$vm_fqdn/sys
426 ! mountpoint
-q /mnt
/$vm_fqdn/proc ||
427 sudo umount
-v /mnt
/$vm_fqdn/proc
428 rule_part_home_umount
430 rule_part_boot_umount
431 rule_part_root_umount