cat <<EOF
Usage: ${0##*/} [OPTIONS] +/-SIZE[g] swap|boot
-Assuming Ian Kelling's partition scheme, Resize swap or boot, expanding
-or shrinking the root fs and partition to compensate. If it changes
-the partition tables incorrectly, the originals are stored in
-/root/backup_partition_table_<device_names>.
-
--n Dry run
--r Reboot now if it's needed.
+Assuming Ian Kelling's partition scheme and we are currently into one of
+it's encrypted oses (we it's btrfs filesystem to be mounted), resize
+swap or boot, expanding or shrinking the root fs and partition to
+compensate. If it changes the partition tables incorrectly, the
+originals are stored in /root/backup_partition_table_<device_names>.
+
+TODO: only tested on stretch. deactivation of swap on reboot
+probably needs to be fixed on other oses. Even on stretch,
+we get 1.5 minutes of waiting for the crypt_dev and normal
+boot .device units.
+
+Warning!!! Backup your data. This script could have bugs in it.
+
+-n Dry run. Note, this likely won't be the exact commands,
+ for example, if you are running outside a vm, there will
+ probably be a reboot required in the middle so the kernel
+ can know about partition changes.
+-r Reboot right away if it's needed.
+-f Force running on a distro that has not been tested.
-h|--help Print help and exit.
SIZE is MiB, or if g is specified, GiB.
reboot_not=false
dry_run=false
+force=false
-temp=$(getopt -l help rnh "$@") || usage 1
+temp=$(getopt -l help rnfh "$@") || usage 1
eval set -- "$temp"
while true; do
case $1 in
-r) reboot_now=true; shift ;;
-n) dry_run=true; shift ;;
+ -f) force=true; shift ;;
-h|--help) usage ;;
--) shift; break ;;
*) echo "$0: Internal error!" ; exit 1 ;;
case $2 in swap|boot) : ;; *) echo "$0: error: bad 2nd arg"; usage 1 ;; esac
+if ! $force && ! grep -q 'VERSION=.*stretch' /etc/os-release; then
+ echo "$0: error: This distro is untested. Only tested version atm is Stretch."
+ exit 1
+fi
+
#### end arg error checking ####
if [[ $op_size == *g ]]; then
op_size=${op_size%g}
size=${op_size#?}
- op=${op_size%size}
- size=$(( ${size} * 1024 ))
+ op=${op_size%$size}
+ size=$(( $size * 1024 ))
op_size=$op$size
else
size=${op_size#?}
# will remain in use. You should reboot now before making further
# changes.
- p mkpart primary "$fs_type" \
- $((${ptable[start$part]} $start_op)) $((${ptable[end$part]} $end_op)) ||:
+ if ! p mkpart primary "$fs_type" \
+ $((${ptable[start$part]} $start_op)) $((${ptable[end$part]} $end_op)); then
+ echo "$0: warning: ignoring failure return of mkpart"
+ fi
}
def-e() {
}
def-e
-e swapoff -a
+
while read devid dev; do
- if [[ $dev != /dev/mapper/* ]]; then
- # older oses, it points to /dev/dm-x
- dev=$(dmsetup info $dev | sed -rn 's/^\s*Name:\s*(\S*)/\1/p')
- else
- dev=${dev#/dev/mapper/}
+ case $dev in
+ /dev/dm-[0-9])
+ # older oses, it points to /dev/dm-x
+ dev=$(dmsetup info $dev | sed -rn 's/^\s*Name:\s*(\S*)/\1/p')
+ ;;
+ /dev/mapper/*)
+ dev=${dev#/dev/mapper/}
+ ;;
+ *)
+ echo "$0: error: could not find devicemapper root dev,
+make sure you are running from a encrypted root this script is resizing"
+ exit 1
+ ;;
+ esac
+ if [[ $dev != crypt_dev_*-part$rootn ]]; then
+ echo "$0: error: unexpected root device name,
+make sure you are running from a encrypted root this script is resizing"
+ exit 1
fi
dev=${dev#crypt_dev_}
- r='-part[0-9]*$'
- [[ $dev =~ $r ]] ||:
- dev=${dev%$BASH_REMATCH}
+ dev=${dev%-part$rootn}
devpath=/dev/disk/by-id/$dev
echo skip=$size
def-e
p() { e parted -a optimal -s -- $devpath unit MiB "$@"; }
unit=systemd-cryptsetup@crypt_dev_$dev-part$swapn
# note systemctl show can test if a unit exists.
- e systemctl stop $unit || [[ $? == 5 ]] # fail due to not loaded
+ if ! e systemctl stop $unit; then
+ e swapoff -a
+ fi
# there is a bug in jessie. this and the .swap unit are
# generated from /etc/fstab, and it escapes - to x2d, then doesn't escape it
# when looking for the file to use as swap. so, no swap is working on jessie
grep "but we have been unable to inform the kernel" &>/dev/null; then
needs_reboot=true
fi
- if ! $grow; then
- if $needs_reboot; then
- e systemctl mask dev-mapper-crypt_swap_$dev$swapn.swap
- e systemctl mask systemd-cryptsetup@crypt_swap_$dev$swapn.service
- e() { echo "$@" >> /root/finish-resize; }
- if ! $reboot_script_initialized; then
- reboot_script_initialized=true
- rm -rf /root/finish-resize
- cat >/root/finish-resize <<'EOF'
+ if $needs_reboot; then
+ # note: even if these units don't exist, this will succeed.
+ e systemctl mask dev-mapper-crypt_swap_$dev$swapn.swap
+ e systemctl mask systemd-cryptsetup@crypt_swap_$dev$swapn.service
+ e() { echo "$@" >> /root/finish-resize; }
+ if ! $reboot_script_initialized; then
+ reboot_script_initialized=true
+ rm -rf /root/finish-resize
+ cat >/root/finish-resize <<'EOF'
#!/bin/bash -x
set -eE -o pipefail
trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
EOF
- chmod +x /root/finish-resize
- fi
- e systemctl unmask systemd-cryptsetup@crypt_swap_$dev$swapn.service
- e systemctl unmask dev-mapper-crypt_swap_$dev$swapn.swap
+ chmod +x /root/finish-resize
fi
+ e swapoff -a
+ e systemctl unmask systemd-cryptsetup@crypt_swap_$dev$swapn.service
+ e systemctl unmask dev-mapper-crypt_swap_$dev$swapn.swap
+ fi
+ if ! $grow; then
$root_resize_cmd
fi
if $boot; then
fi
if $needs_reboot; then
- if ! $grow; then
- echo "$0: Reboot, run /root/finish-resize. It's contents:"
- cat /root/finish-resize
- else
- echo "$0: If you want to resize again later, a reboot is required first."
- fi
+ echo "$0: Reboot, run /root/finish-resize. It's contents:"
+ cat /root/finish-resize
if $reboot_now; then
echo "$0: rebooting now"
reboot now
--- /dev/null
+#!/bin/bash
+#
+# You can copy this to a http server, then wget -O- url|sudo bash
+# or curl|bash, if curl is installed.
+#
+# This has been tested on trisquel belanos and ubuntu xenial.
+#
+# If the screen just sits in a weird color inverted, corrupted looking state,
+# it's probably nothing wrong with the computer, but a problem
+# with the fai server. If you can do this from a virtual terminal,
+# it will print out more info (I know from running it on a vm).
+
+set -ex
+if grep -q ID=ubuntu /etc/os-release; then
+ sed -ri '/^\s*deb/{/universe/!s/$/ universe/}' /etc/apt/sources.list
+fi
+apt-get update
+apt-get install -y debconf
+debconf-set-selections <<EOF
+kexec-tools kexec-tools/load_kexec boolean false
+EOF
+apt-get install -y pxe-kexec
+# at least on belanos, apt-get goes into the background,
+# and we need to wait for it to finish.
+sleep 5
+pxe-kexec -n --ignore-whitelist -l fai-generated faiserver
iankelling.org / git / automated-distro-installer / commitdiff