#!/bin/bash
-shopt -s extdebug
-bash-trace() {
- # shows function args when: shopt -s extdebug
- local -i argc_index=0 arg frame i start=${1:-1} max_indent=8 indent
- local source
- local extdebug=false
- if [[ $(shopt -p extdebug) == *-s* ]]; then
- extdebug=true
- fi
-
- for ((frame=0; frame < ${#FUNCNAME[@]}-1; frame++)); do
- argc=${BASH_ARGC[frame]}
- argc_index+=$argc
- ((frame < start)) && continue
- if (( ${#BASH_SOURCE[@]} > 1 )); then
- source="${BASH_SOURCE[frame+1]}:${BASH_LINENO[frame]}:"
- fi
- indent=$((frame-start+1))
- indent=$((indent < max_indent ? indent : max_indent))
- printf "%${indent}s↳%sin \`%s" '' "$source" "${FUNCNAME[frame]}"
- if $extdebug; then
- for ((i=argc_index-1; i >= argc_index-argc; i--)); do
- printf " %s" "${BASH_ARGV[i]}"
- done
- fi
- echo \'
- done
-}
-
-
-errcatch() {
- set -E; shopt -s extdebug
- _err-trap() {
- err=$?
- exec >&2
- echo "${BASH_SOURCE[1]}:${BASH_LINENO[0]}:in \`$BASH_COMMAND' returned $err"
- bash-trace 2
- echo "$0: exiting with code $err"
- exit $err
- }
- trap _err-trap ERR
- set -o pipefail
-}
-
-errcatch
-
[[ $EUID == 0 ]] || exec sudo "$BASH_SOURCE" "$@"
+x="$(readlink -f "$BASH_SOURCE")"; source "${x%/*}/bash-trace"
+
usage() {
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.
+Usage: ${0##*/} [OPTIONS] -- +/-SIZE[g] swap|boot
+
+Assuming Ian Kelling's partition scheme and we are currently into one of
+it's encrypted oses (we it's btrfs filesystem to be mounted), resize
+swap or boot, expanding or shrinking the root fs and partition to
+compensate. If it changes the partition tables incorrectly, the
+originals are stored in /root/backup_partition_table_<device_names>.
+
+TODO: only tested on stretch. deactivation of swap on reboot
+probably needs to be fixed on other oses. Even on stretch,
+we get 1.5 minutes of waiting for the crypt_dev and normal
+boot .device units.
+
+Warning!!! Backup your data. This script could have bugs in it.
+
+-n Dry run. Note, this likely won't be the exact commands,
+ for example, if you are running outside a vm, there will
+ probably be a reboot required in the middle so the kernel
+ can know about partition changes.
+-r Reboot right away if it's needed.
+-f Force running on a distro that has not been tested.
-h|--help Print help and exit.
SIZE is MiB, or if g is specified, GiB.
reboot_not=false
dry_run=false
+force=false
-temp=$(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
iankelling.org / git / automated-distro-installer / blobdiff