remove hardcoded partitions
This commit is contained in:
423
bash/dup-live-disk.sh
Normal file → Executable file
423
bash/dup-live-disk.sh
Normal file → Executable file
@@ -1,6 +1,6 @@
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#!/bin/bash
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#
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# dup-live-disk.sh - duplicate live system partitions on new disk.
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# dup-live-disk.sh - duplicate (possibly live) system partitions
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#
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# (C) Bruno Raoult ("br"), 2007-2021
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# Licensed under the Mozilla Public License (MPL) version 2.0.
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@@ -11,18 +11,389 @@
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#
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# SPDX-License-Identifier: MPL-2.0 <https://spdx.org/licenses/MPL-2.0.html>
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#
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# This script will not work for all situations, I strongly suggest you
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# don't use it if you don't *fully* understand it.
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#%MAN_BEGIN%
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# NAME
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# dup-live-disk.sh - duplicate (possibly live) system partitions
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#
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# SYNOPSIS
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# dup-live-disk.sh [OPTIONS] [SRC] DST
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#
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# DESCRIPTION
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# Duplicate SRC disk partitions to same structured DST disk ones.
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# if SRC is omitted, tue running system disk (where root partition resides) will
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# be used.
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# Both SRC and DST *must* have same partition base LABELs - as 'LABEL' field for
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# lsblk(1) and blkid(1), with an ending character (unique per disk) to
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# differentiate them.
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# For example, if partitions base labels are 'root', 'export', and 'swap',
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# SRC disk the ending character '1' and DST disk the character '2', SRC
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# partitions must be 'root1', 'export1, and 'swap1', and DST partitions must be
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# 'root2', 'export2, and 'swap2'.
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#
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# OPTIONS
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# -d, -n, --dry-run, --no
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# Dry-run: nothing will be written to disk.
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#
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# -h, --help
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# Display short help and exit.
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#
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# -m, --man
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# Display a "man-like" description and exit.
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#
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# -r, --root=PARTNUM
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# Mandatory if SRC is provided, forbidden otherwise.
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# PARTNUM is root partition number on SRC disk.
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#
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# -y, --yes
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# Do not ask for actions confirmation. Default is to display next
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# action and ask user to [y] do it, [q] quit, [s] skip.
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#
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# EXAMPLES
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# Copy sda to sdb, root partition is partition (sda1/sdb1)
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# $ sudo dup-live-disk.sh --root 1 sda sdb
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#
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# Copy live system (where / is mounted) to sdb
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# $ sudo dup-live-disk.sh sdb
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#
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# BUGS
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# Cannot generate grub with a separate /boot partition.
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# This script will not work for all situations, I strongly suggest you
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# don't use it if you don't *fully* understand it.
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#
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# TODO
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# Write about autofs.
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#%MAN_END%
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# dest device (used for grub)
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DSTDISK=/dev/sdb
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# command line
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SCRIPT="${0}"
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CMD="${0##*/}"
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# partitions suffixes, for source and destination partitions.
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# For example, if we want to copy XX partition, source partition will be
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# /mnt/XX${SRCNUM}, and destination will be /mnt/XX${DSTNUM}
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SRCNUM=2
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DSTNUM=1
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# valid filesystems
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# shellcheck disable=2034
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VALIDFS=(ext3 ext4 btrfs vfat reiserfs)
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function man {
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sed -n '/^#%MAN_BEGIN%/,/^#%MAN_END%$/{//!p}' "$SCRIPT" | sed -E 's/^# ?//'
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}
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function usage {
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cat <<_EOF
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Usage: $CMD [OPTIONS] [SRC] DST
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Duplicate SRC (or live system) disk partitions to DST disk partitions.
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Options:
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-d, -n, --dry-run, --no dry-run: nothing will be written to disk
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-h, --help this help
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-m, --man display a "man-like" page and exit
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-r, --root=PARTNUM root partition number on SRC device
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mandatory if and only if SRC is provided
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-y, --yes DANGER ! perform all actions without user
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confirmation
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SRC and DST have strong constraints on partitions schemes and naming.
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Type '$CMD --man" for more details"
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_EOF
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exit 0
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}
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# log function
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# parameters:
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# -l, -s: long, or short prefix (default: none). Last one is used.
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# -t: timestamp
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# -n: no newline
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function log {
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local timestr="" prefix="" opt=y newline=y
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while [[ $opt = y ]]; do
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case $1 in
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-l) prefix=$(printf "*%.s" {1..30});;
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-s) prefix=$(printf "*%.s" {1..5});;
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-n) newline=n;;
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-t) timestr=$(date "+%F %T%z - ");;
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*) opt=n;;
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esac
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[[ $opt = y ]] && shift
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done
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[[ $prefix != "" ]] && printf "%s " "$prefix"
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printf "%s" "$timestr"
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printf "$@"
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[[ $newline = y ]] && printf "\n"
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return 0
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}
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# prints out and run a command.
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function echorun {
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log "%s" "$@"
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"$@"
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return $?
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}
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function error_handler {
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local ERROR=$2
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log "FATAL: Error line $1, exit code $2. Aborting."
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exit "$ERROR"
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}
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trap 'error_handler $LINENO $?' ERR SIGHUP SIGINT SIGTERM
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function check_block_device {
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local devtype="$1"
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local mode="$2"
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local dev="$3"
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if [[ ! -b "$dev" ]]; then
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log "$CMD: $devtype '$dev' is not a block device." >&2
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exit 1
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fi
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if [[ ! -r "$dev" ]]; then
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log "$CMD: $devtype '$dev' is not readable." >&2
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exit 1
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fi
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if [[ $mode = "w" && ! -w "$dev" ]]; then
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log "$CMD: $devtype '$dev' is not writable." >&2
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exit 1
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fi
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return 0
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}
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# check if $1 is in array $2 ($2 is by reference)
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function in_array {
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local elt=$1 i
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local -n arr=$2
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for ((i=0; i<${#arr[@]}; ++i)); do
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[[ ${arr[$i]} == "$elt" ]] && return 0
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done
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return 1
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}
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# source and destination devices, root partition
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SRC=""
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DST=""
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SRCROOT=""
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ROOTPARTNUM=""
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DOIT=manual
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# short and long options
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SOPTS="dnhmr:y"
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LOPTS="dry-run,no,help,man,root:,yes"
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if ! TMP=$(getopt -o "$SOPTS" -l "$LOPTS" -n "$CMD" -- "$@"); then
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log "Use '$CMD --help' or '$CMD --man' for help."
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exit 1
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fi
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# if (( $? > 1 )); then
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# echo 'Terminating...' >&2
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# exit 1
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# fi
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eval set -- "$TMP"
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unset TMP
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while true; do
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case "$1" in
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'-d'|'-n'|'--dry-run'|'--no')
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DOIT=no
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shift
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continue
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;;
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'-h'|'--help')
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usage
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exit 0
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;;
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'-m'|'--man')
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man
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exit 0
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;;
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'-r'|'--root')
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ROOTPARTNUM="$2"
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if ! [[ "$ROOTPARTNUM" =~ ^[[:digit:]]+$ ]]; then
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log "$CMD: $ROOTPARTNUM must be a partition number." >&2
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exit 1
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fi
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shift 2
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continue
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;;
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'-y'|'--yes')
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DOIT=yes
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shift
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continue
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;;
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'--')
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shift
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break
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;;
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*)
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usage
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log 'Internal error!' >&2
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exit 1
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;;
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esac
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done
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case "$#" in
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1)
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if [[ -n "$ROOTPARTNUM" ]]; then
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log "$CMD: cannot have --root option for live system." >&2
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log "Use '$CMD --help' or '$CMD --man' for help." >&2
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exit 1
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fi
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# guess root partition disk name
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SRCROOT=$(findmnt -no SOURCE -M /)
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ROOTPARTNUM=${SRCROOT: -1}
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SRC="/dev/"$(lsblk -no pkname "$SRCROOT")
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DST="/dev/$1"
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;;
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2)
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if [[ -z "$ROOTPARTNUM" ]]; then
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log "$CMD: missing --root option for non live system." >&2
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log "Use '$CMD --help' or '$CMD --man' for help." >&2
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exit 1
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fi
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SRC="/dev/$1"
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SRCROOT="$SRC$ROOTPARTNUM"
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DST="/dev/$2"
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;;
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*)
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usage >&2
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exit 1
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esac
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# check SRC and DST are different, find out their characteristics
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if [[ "$SRC" = "$DST" ]]; then
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log "%s: Fatal: destination disk (%s) cannot be source.\n" "$CMD" "$SRC"
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log "Use '%s --help' or '%s --man' for help." "$CMD" "$CMD"
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exit 1
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fi
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check_block_device "source disk" r "$SRC"
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check_block_device "destination disk" w "$DST"
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check_block_device "source root partition" r "$SRCROOT"
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SRCROOTLABEL=$(lsblk -no label "$SRCROOT")
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SRCCHAR=${SRCROOTLABEL: -1}
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ROOTLABEL=${SRCROOTLABEL:0:-1}
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# find out all partitions labels on SRC disk...
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# shellcheck disable=SC2207
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declare -a SRCLABELS=($(lsblk -lno LABEL "$SRC"))
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# shellcheck disable=SC2206
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declare -a LABELS=(${SRCLABELS[@]%?})
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#log "SRCLABELS=${#SRCLABELS[@]} - ${SRCLABELS[*]}"
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#log "LABELS=${#LABELS[@]} - ${LABELS[*]}"
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declare -a SRCDEVS SRCFS SRCDOIT
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# ... and corresponding partition device and fstype
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for ((i=0; i<${#LABELS[@]}; ++i)); do
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TMP="${LABELS[$i]}$SRCCHAR"
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TMP="${SRCLABELS[$i]}"
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TMPDEV=$(findfs LABEL="$TMP")
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TMPFS=$(lsblk -no fstype "$TMPDEV")
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log "found LABEL=$TMP DEV=$TMPDEV FSTYPE=$TMPFS"
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SRCDEVS[$i]="$TMPDEV"
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SRCFS[$i]="$TMPFS"
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SRCDOIT[$i]=n
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in_array "$TMPFS" VALIDFS && SRCDOIT[$i]=y
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unset TMP TMPDEV TMPFS
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done
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DSTROOT="$DST$ROOTPARTNUM"
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check_block_device "destination root partition" w "$DSTROOT"
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DSTROOTLABEL=$(lsblk -no label "$DSTROOT")
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DSTCHAR=${DSTROOTLABEL: -1}
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# check DSTROOTLABEL is compatible with ROOTLABEL
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if [[ "$DSTROOTLABEL" != "$ROOTLABEL$DSTCHAR" ]]; then
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log "%s: Fatal: %s != %s%s." "$CMD" "$DSTROOTLABEL" "$ROOTLABEL" "$DSTCHAR"
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exit 1
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fi
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# log "SRC=%s DST=%s" "$SRC" "$DST"
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# log "SRCROOT=%s DSTROOT=%s" "$SRCROOT" "$DSTROOT"
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# log "ROOTLABEL=$ROOTLABEL"
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# log "SRCROOTLABEL=%s DSTROOTLABEL=%s" "$SRCROOTLABEL" "$DSTROOTLABEL"
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# log "SRCCHAR=%s DSTCHAR=%s" "$SRCCHAR" "$DSTCHAR"
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# log "DOIT=%s\n" "$DOIT"
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declare -a DSTLABELS DSTDEVS DSTFS DSTDOIT
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# Do the same for correponding DST partitions labels, device, and fstype
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for ((i=0; i<${#LABELS[@]}; ++i)); do
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TMP="${LABELS[$i]}$DSTCHAR"
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log -n "Looking for [%s] label... " "$TMP"
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if ! TMPDEV=$(findfs LABEL="$TMP"); then
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log "not found."
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exit 1
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fi
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TMPDISK=${TMPDEV%?}
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log -n "DEV=%s... DISK=%s..." "$TMPDEV" "$TMPDISK"
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if [[ "$TMPDISK" != "$DST" ]]; then
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log "wrong disk (%s != %s)" "$TMPDISK" "$DST"
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exit 1
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fi
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TMPFS=$(lsblk -no fstype "$TMPDEV")
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log "FSTYPE=%s" "$TMPFS"
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DSTLABELS[$i]="$TMP"
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DSTDEVS[$i]="$TMPDEV"
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DSTFS[$i]="$TMPFS"
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DSTDOIT[$i]=n
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in_array "$TMPFS" VALIDFS && DSTDOIT[$i]=y
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unset TMP TMPDEV TMPFS
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done
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echo ZOB "${SRCDEVS[0]}" "${DSTDEVS[0]}"
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for ((i=0; i<${#LABELS[@]}; ++i)); do
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log -n "%s %s " "${SRCDEVS[$i]}" "${DSTDEVS[$i]}"
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log -n "%s %s " "${SRCLABELS[$i]}" "${DSTLABELS[$i]}"
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log -n "%s %s " "${SRCFS[$i]}" "${DSTFS[$i]}"
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log "%s %s" "${SRCDOIT[$i]}" "${DSTDOIT[$i]}"
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echo
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done | column -N DEV1,DEV2,LABEL1,LABEL2,FS1,FS2,SDOIT,DDOIT -t -o " | "
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RSYNCOPTS="-axH --delete --delete-excluded"
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FILTER=--filter="dir-merge .rsync-disk-copy"
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# copy loop
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for ((i=0; i<${#LABELS[@]}; ++i)); do
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if [[ "${SRCDOIT[$i]}" != y ]] || [[ "${DSTDOIT[$i]}" != y ]]; then
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log "skipping label %s" "${LABELS[$i]}"
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continue
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fi
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SRCPART=/mnt/${SRCLABELS[$i]}/
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DSTPART=/mnt/${DSTLABELS[$i]}
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log -n "%s -> %s : " "$SRCPART" "$DSTPART"
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#log "\t%s %s %s %s %s" rsync "${RSYNCOPTS}" "$FILTER" "$SRCPART" "$DSTPART"
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skip=y
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case "$DOIT" in
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yes)
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skip=n
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;;
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no)
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log "skipping (dry run)."
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;;
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manual)
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log -n "proceed ? [y/N/q] "
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read -r key
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case "$key" in
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y|Y)
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log "copying..."
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skip=n
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;;
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q|Q)
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log "aborting..."
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exit 0
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;;
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n|N|*)
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log "skipping..."
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;;
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esac
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esac
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if [[ "$skip" == n ]]; then
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# shellcheck disable=SC2086
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echorun rsync "$FILTER" ${RSYNCOPTS} "$SRCPART" "$DSTPART"
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fi
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log ""
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done
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exit 0
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# array of partitions to copy
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TO_COPY=(root export EFI)
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@@ -42,8 +413,6 @@ GRUB_ROOT=/mnt/root${DSTNUM}
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GRUB_DEV=/dev/$(lsblk -no pkname /dev/disk/by-label/root${DSTNUM})
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# we will use ".rsync-disk-copy" files to exclude files/dirs
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RSYNCOPTS="-axH --delete --delete-excluded"
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FILTER=--filter="dir-merge .rsync-disk-copy"
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# stop what could be problematic (databases, etc...)
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systemctl stop mysql
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@@ -71,3 +440,33 @@ chroot ${GRUB_ROOT} grub-install ${GRUB_DEV}
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# restart stopped process (db, etc...)
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systemctl start mysql
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exit 0
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###############declare -a DSTLABELS_CHECK=(${SRCLABELS[@]/%?/$DSTCHAR})
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# find corresponding LABELS on DEST disk
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# declare -a LABELS=(${SRCLABELS[@]/%?/})
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# for ((i=0; i<${#SRCLABELS[@]}; ++i)); do
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# TMP="${LABELS[$i]}$DSTCHAR"
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# echo -n "looking for partition 'LABEL=$TMP'... "
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# if ! DSTFS=$(findfs LABEL="$TMP"); then
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# echo "not found."
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# exit 1
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# fi
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# echo "$DSTFS"
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# DSTLABELS[$i]="$TMP"
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# done
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# #DSTLABELS=($(lsblk -lno LABEL "$DST"))
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# # check all partitions types
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# for ((i=0; i<${#SRCLABELS[@]}; ++1)); do
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# check_block_device "source ${LABELS[$i]} partition" r "${SRCLABELS[$i]}"
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# #check_block_device "destination ${LABELS[$i]} partition" w "${DSTLABELS[$i]}"
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# done
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# echo "DSTLABELS=${#DSTLABELS[@]} - ${DSTLABELS[*]}"
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exit 0
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Reference in New Issue
Block a user