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rpi-clone
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rpi-clone
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#!/bin/bash
# rpi-clone is Copyright (c) 2018-2019 Bill Wilson
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted under the conditions of the BSD LICENSE file at
# the rpi-clone github source repository:
# https://github.com/billw2/rpi-clone
version=2.0.22
# setup trusted paths for dependancies (like rsync, grub, fdisk, etc)
export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin"
# auto run grub-install if grub detected
grub_auto=1
PGM=`basename $0`
setup_command="$PGM-setup"
rsync_options="--force -rltWDEHXAgoptx"
if [ `id -u` != 0 ]
then
echo -e "$PGM needs to be run as root.\n"
exit 1
fi
raspbian=0
raspbian_buster=0
if [ -f /etc/os-release ]
then
pretty=`cat /etc/os-release | grep PRETTY`
if [[ "$pretty" == *"Raspbian"* ]]
then
raspbian=1
fi
if ((raspbian)) && [[ "$pretty" == *"buster"* ]]
then
raspbian_buster=1
fi
fi
confirm()
{
if ((unattended || (initialize && Unattended) ))
then
return 0
fi
printf "\n%s (yes/no): " "$1"
read resp
if [ "$resp" = "y" ] || [ "$resp" = "yes" ]
then
return 0
fi
if [ "$2" == "abort" ]
then
echo -e "Aborting!\n"
exit 0
fi
return 1
}
# sfdisk is in fdisk package
commands="rsync parted fdisk findmnt column fsck.vfat"
packages="rsync parted util-linux mount bsdmainutils dosfstools"
need_packages=""
idx=1
for cmd in $commands
do
if ! command -v $cmd > /dev/null
then
pkg=$(echo "$packages" | cut -d " " -f $idx)
printf "%-30s %s\n" "Command not found: $cmd" "Package required: $pkg"
need_packages="$need_packages $pkg"
fi
((++idx))
done
if [ "$need_packages" != "" ]
then
confirm "Do you want to apt-get install the packages?" "abort"
apt-get install -y --no-install-recommends $need_packages
fi
clone=/mnt/clone
clone_src=/mnt/clone-src
clone_log=/var/log/$PGM.log
HOSTNAME=`hostname`
usage()
{
echo $"
usage: $PGM sdN {-v|--verbose} {-f|--force-initialize} {-f2}
{-p|--p1-size size} {-u|--unattended} {-U|--Unattended} {-q|--quiet}
{-s|--setup host} {-e|--edit-fstab sdX } {-m|--mountdir dir }
{-L|--label-partitions label} {-l|--leave-sd-usb-boot}
{-a|--all-sync} {-F|--Force-sync} {-x} {-V|--version}
{--convert-fstab-to-partuuid}
{--exclude=PATTERN} {--exclude-from=FILE}
-v - verbose rsync, list all files as they are copied.
-f - force initialize the destination disk by imaging the booted disk
partition structure. File systems are then synced or imaged.
-f2 - force initialize only the first 2 partitions to the destination.
So a multi partition USB boot can initialize clone back to
a 2 partition SD card.
-p size - resize destination partition 1 to 'size' bytes. For two partition
initialize (when first clone to blank disk or using -f2 or -f).
Use 'sizeM' for MiB size units. eg -p 256M equals -p 268435456
-u - unattended clone if not initializing. No confirmations asked,
but abort if disk needs initializing or on error.
-U - unattended even if initializing. No confirmations asked,
but abort only on errors.
-q - quiet mode, no output unless errors or initializing. Implies -u.
-s host - add 'host' to args passed to script rpi-clone-setup and run it
after cloning but before unmounting partitions. For setting
clone disk hostname, but args can be what the script expects.
You can give multiple '-s arg' options.
-e sdX - edit destination fstab to change booted device names to new
device 'sdX'. This is Only for fstabs that use device names.
Used for setting up a USB bootable disk.
-m dir - Add dir to a custom list of mounted directories to sync. Then
the custom list will be synced instead of the default of all
mounted directories. The root directory is always synced.
Not for when initializing.
-L lbl - label for ext type partitions. If 'lbl' ends with '#', replace
'#' with a partition number and label all ext partitions.
Otherwise, apply label to root partition only.
-l - leave SD card to USB boot alone when cloning to SD card mmcblk0
from a USB boot. This preserves a SD card to USB boot setup
by leaving the SD card cmdline.txt using the USB root. When
cloning to USB from SD card this option sets up the SD card
cmdline.txt to boot to the USB disk.
-a - Sync all partitions if types compatible, not just mounted ones.
-F - force file system sync or image for some errors. eg:
If source used > destination space error, do the sync anyway.
If a source partition mount error, skip it and do other syncs.
-x - use set -x for very verbose bash shell script debugging
-V - print rpi-clone version.
Clone a booted file system to a destination disk which is bootable.
The destination disk is a SD card (USB card reader) or USB disk 'sdN' plugged
into a USB port. The 'sdN' name should be a full disk name like sda and not
a partition name like sda1. $PGM works on a Raspberry Pi and can work on
other systems. For a destination disk that shows up as sda, run:
$ sudo rpi-clone sda
Clones can be from a booted SD card or USB disk. For a description, example
clone runs and example usage of above options, see the README.md at:
https://github.com/billw2/rpi-clone
A line logging a $PGM run is written to $clone_log.
Download:
git clone https://github.com/billw2/rpi-clone
"
exit 1
}
readable_MiB()
{
val=$1
if [ "$val" == "" ]
then
result=" ??"
else
blk_size=$2
val=$((val / 1024 * blk_size))
if ((val < 1024 * 1024))
then
result=$(echo $val \
| awk '{ byte =$1 /1024; printf "%.1f%s", byte, "M" }')
elif ((val < 1024 * 1024 * 1024))
then
result=$(echo $val \
| awk '{ byte =$1 /1024/1024; printf "%.1f%s", byte, "G" }')
else
result=$(echo $val \
| awk '{ byte =$1 /1024/1024/1024; printf "%.1f%s", byte, "T" }')
fi
fi
printf -v "${3}" "%s" "$result"
}
readable_MB()
{
val=$1
if [ "$val" == "" ]
then
result=" ??"
else
blk_size=$2
val=$((val / 1000 * blk_size))
if ((val < 1000 * 1000))
then
result=$(echo $val \
| awk '{ byte =$1 /1000; printf "%.1f%s", byte, "MB" }')
elif ((val < 1000 * 1000 * 1000))
then
result=$(echo $val \
| awk '{ byte =$1 /1000/1000; printf "%.1f%s", byte, "GB" }')
else
result=$(echo $val \
| awk '{ byte =$1 /1000/1000/1000; printf "%.1f%s", byte, "TB" }')
fi
fi
printf -v "${3}" "%s" "$result"
}
qecho()
{
if ((!quiet))
then
echo "$@"
fi
}
qprintf()
{
if ((!quiet))
then
printf "$@"
fi
}
unmount_or_abort()
{
if [ "$1" == "" ]
then
return
fi
qprintf "\n $2\n The clone cannot proceed unless it is unmounted."
if confirm "Do you want to unmount $1?" "abort"
then
if ! umount $1
then
echo "$PGM could not unmount $1."
echo -e "Aborting!\n"
exit 0
fi
fi
}
unmount_list()
{
if [ "$1" == "" ]
then
return
fi
for dir in $1
do
qecho " unmounting $dir"
if ! umount $dir
then
qecho " Failed to unmount: $dir"
fi
done
}
mount_partition()
{
qecho " Mounting $1 on $2"
if ! mount $1 $2
then
echo " Mount failure of $1 on $2."
if [ "$3" != "" ]
then
unmount_list $3
fi
echo "Aborting!"
exit 1
fi
}
rsync_file_system()
{
src_dir="$1"
dst_dir="$2"
qprintf " => rsync $1 $2 $3 ..."
if [ "$3" == "with-root-excludes" ]
then
rsync $rsync_options --delete \
$exclude_useropt \
$exclude_swapfile \
--exclude '.gvfs' \
--exclude '/dev/*' \
--exclude '/mnt/clone/*' \
--exclude '/proc/*' \
--exclude '/run/*' \
--exclude '/sys/*' \
--exclude '/tmp/*' \
--exclude 'lost\+found/*' \
$src_dir \
$dst_dir
else
rsync $rsync_options --delete \
$exclude_useropt \
--exclude '.gvfs' \
--exclude 'lost\+found/*' \
$src_dir \
$dst_dir
fi
qecho ""
}
print_partitions()
{
if ((quiet)) && ((!initialize))
then
return
fi
n_parts=$(( (n_src_parts >= n_dst_parts) ? n_src_parts : n_dst_parts ))
readable_MB $src_disk_size "512" src_size_readable
readable_MB $dst_disk_size "512" dst_size_readable
printf "\n%-43s%s" "Booted disk: $src_disk $src_size_readable" \
"Destination disk: $dst_disk $dst_size_readable"
echo $"
---------------------------------------------------------------------------"
out=$'Part, Size,FS,Label ,Part, Size,FS,Label\n'
for ((p = 1; p <= n_parts; p++))
do
if ((p <= n_src_parts && src_exists[p]))
then
readable_MiB ${src_size_sectors[p]} "512" tmp
printf -v sectors_readable "%7s" $tmp
pname="$p ${src_name[p]}"
out=${out}$"$pname,$sectors_readable,${src_fs_type[p]},${src_label[p]},"
else
out=${out}$" , , , ,"
fi
if ((p <= n_dst_parts && dst_exists[p]))
then
readable_MiB ${dst_size_sectors[p]} "512" tmp
printf -v sectors_readable "%7s" $tmp
out=${out}$"$p,$sectors_readable,${dst_fs_type[p]},${dst_label[p]},"
else
out=${out}$" , , , ,"
fi
out=${out}$'\n'
done
echo $"$out" | column -t -s ','
if ((alt_root_part_num > 0))
then
echo $"
** Assuming destination root partition for the clone is $dst_part_base$root_part_num
The root FS mount is not from booted $src_disk. It is ${src_root_dev#/dev/}"
fi
echo $"---------------------------------------------------------------------------"
}
print_sync_actions()
{
if ((quiet))
then
return
fi
for ((p = 1; p <= n_src_parts; p++))
do
if ((!src_exists[p]))
then
continue
fi
if ((p == root_part_num && alt_root_part_num > 0))
then
part=${src_root_dev#/dev/}
flow="$part to $dst_part_base$p"
else
flow="to $dst_part_base$p"
fi
if ((src_sync_part[p]))
then
if [ "${src_mounted_dir[p]}" != "" ]
then
src_label="${src_mounted_dir[p]}"
action_label="SYNC"
else
src_label="/dev/${src_partition[p]}"
action_label="MOUNT SYNC"
fi
readable_MiB ${src_used_sectors[p]} "512" used
readable_MiB ${dst_size_sectors[p]} "512" size
printf "%-22s%-14s : %s %s\n" \
"$src_label" "(${used} used)" "$action_label" \
"$flow (${size} size)"
fi
done
}
print_image_actions()
{
for ((p = 1; p <= n_src_parts; p++))
do
if ((!src_exists[p]))
then
continue
fi
pname="$p ${src_name[p]}"
fs_type=${src_fs_type[$p]}
if ((p == root_part_num && alt_root_part_num > 0))
then
part=${src_root_dev#/dev/}
flow="$part to $dst_part_base$p"
else
flow="to $dst_part_base$p"
fi
action=""
if ((p <= n_image_parts))
then
if ((p == 1))
then
if ((p1_size_new > 0))
then
action="RESIZE MKFS SYNC $flow"
else
action="MKFS SYNC $flow"
fi
elif [ "$fs_type" == "swap" ]
then
action="MKSWAP"
elif ((p != ext_part_num))
then
if [ "${src_mounted_dir[p]}" != "" ] || ((p == n_src_parts))
then
if ((p < n_src_parts || last_part_space || force_sync))
then
action="MKFS SYNC $flow"
else
action="MKFS **NO SYNC**"
fi
else
action="IMAGE $flow"
fi
fi
fi
if ((p == n_image_parts))
then
readable_MiB ${src_used_sectors[n_image_parts]} "512" used
printf "%-22s%-14s : RESIZE %s\n" \
"$pname" "(${used} used)" "$action"
elif ((src_used_sectors[$p] > 0 && p < n_image_parts))
then
readable_MiB ${src_used_sectors[p]} "512" used
printf "%-22s%-14s : $action\n" "$pname" "(${used} used)"
elif [ "$action" != "" ]
then
printf "%-36s : $action\n" "$pname"
fi
done
}
print_options()
{
if ((quiet))
then
return
fi
echo $"---------------------------------------------------------------------------"
if ((force_sync))
then
printf "%-22s : %s\n" "-F" \
"forcing clone to skip some errors."
fi
if ((force_2_parts))
then
printf "%-22s : %s\n" "-f2" \
"force initialize to first two partitions only."
fi
if ((p1_size_new > 0))
then
printf "%-3s%-19s : %s %s %s\n" "-p " "$p1_size_arg" \
"resize /boot to" "$p1_size_new" "blocks of 512 Bytes."
fi
if [ "$edit_fstab_name" != "" ]
then
printf "%-22s : %s\n" "-e clone fstab edit" \
"edit $src_part_base device entries to $edit_fstab_name."
fi
if [ "$ext_label" != "" ]
then
rep="${ext_label: -1}"
if [ "$rep" == "#" ]
then
msg="all ext partition types"
else
msg="root partition only"
fi
printf "%-22s : %s\n" "-L $ext_label" \
"volume label for $msg."
fi
if ((leave_sd_usb_boot))
then
if ((SD_slot_dst))
then
msg="leave SD card cmdline.txt bootable to USB."
elif ((SD_slot_boot))
then
msg="install boot to USB cmdline.txt on SD card."
else
msg="-l ignored. Src or dst is not a SD card slot."
fi
printf "%-22s : %s\n" "-l SD to USB boot mode" "$msg"
fi
if [ "$setup_args" != "" ]
then
printf "%-22s : %s\n" "Run setup script" "$setup_command $setup_args"
else
printf "%-22s : no.\n" "Run setup script"
fi
if ((have_grub))
then
printf "%-22s : %s\n" "Run grub" \
"grub-install --root-directory=$clone /dev/$dst_disk"
fi
printf "%-22s : %s.\n" "Verbose mode" "$verbose"
printf "%-23s:\n" "-----------------------"
}
ext_label()
{
pnum=$1
fs_type=$2
flag=$3
label_arg=""
if [ "$ext_label" != "" ] && [[ "$fs_type" == *"ext"* ]]
then
rep="${ext_label: -1}"
if [ "$rep" == "#" ]
then
label_arg=${ext_label:: -1}
label_arg="$flag $label_arg$pnum"
elif ((pnum == root_part_num))
then
label_arg="$flag $ext_label"
fi
fi
printf -v "${4}" "%s" "$label_arg"
}
get_src_disk()
{
partition=${1#/dev/}
disk=${partition:: -1}
num="${partition: -1}"
if [[ $disk == *"mmcblk"* ]]
then
SD_slot_boot=1
disk=${disk:0:7}
src_part_base=${disk}p
fi
printf -v "${2}" "%s" "$disk"
printf -v "${3}" "%s" "$num"
}
# ==== source (booted) disk info and default mount list
#
src_boot_dev=`findmnt /boot -o source -n | grep "/dev/"`
src_root_dev=`findmnt / -o source -n | grep "/dev/"`
SD_slot_boot=0
SD_slot_dst=0
src_part_base=""
boot_part_num=0
alt_root_part_num=0
if [ "$src_boot_dev" == "" ]
then
get_src_disk "$src_root_dev" "src_disk" "unused"
else
get_src_disk "$src_boot_dev" "src_disk" "boot_part_num"
fi
get_src_disk "$src_root_dev" "src_root_disk" "root_part_num"
if [ "$src_disk" == "" ]
then
echo "Cannot find booted device."
exit 1
fi
if [ "$src_part_base" == "" ]
then
src_part_base=$src_disk
fi
if [ "$src_disk" != "$src_root_disk" ]
then
if ((SD_slot_boot))
then
# Handle SD card boots with root on different USB disk device.
# But will assume SD card has a root partition just above its root.
#
alt_root_part_num="$root_part_num"
root_part_num=$((boot_part_num + 1))
else
echo $"
Boot and root are on different disks and it's not a SD card boot.
Don't know how to partition the destination disk!"
exit 1
fi
fi
# src_root_dev, if on device other than booted, is not in src_partition_table
# and src_fdisk_table, but is in src_df_table and src_mount_table
#
src_partition_table=$(parted -m "/dev/$src_disk" unit s print | tr -d ';')
src_fdisk_table=$(fdisk -l /dev/$src_disk | grep "^/dev/")
tmp=$(df | grep -e "^/dev/$src_disk" -e "^/dev/root" -e "$src_root_dev" \
| tr -s " ")
dev=${src_root_dev#/dev/}
src_df_table=$(echo "$tmp" | sed "s/root/$dev/")
n_src_parts=$(echo "$src_partition_table" | tail -n 1 | cut -d ":" -f 1)
src_disk_size=$(echo "$src_partition_table" \
| grep "^/dev/$src_disk" | cut -d ":" -f 2 | tr -d 's')
line=$(fdisk -l /dev/$src_disk | grep "Disk identifier:")
src_disk_ID=${line#*x}
src_mount_table=$(findmnt -o source,target -n -l \
| grep -e "^/dev/$src_disk" -e "^$src_root_dev" | tr -s " ")
n_mounts=$(echo "$src_mount_table" | wc -l)
if ((alt_root_part_num > 0 && n_src_parts < 2))
then
echo $"
Booted disk has only one partition and the root is from another device.
Don't know how to partition the destination disk!
"
exit 1
fi
line=$(echo "$src_fdisk_table" | grep "Extended")
if [ "$line" != "" ]
then
dev=$(echo "$line" | cut -d " " -f 1)
ext_part_num="${dev: -1}"
else
ext_part_num=0
fi
for ((p = 1; p <= n_src_parts; p++))
do
line=$(echo "$src_partition_table" | grep -e "^${p}:")
if [ "$line" == "" ]
then
src_exists[p]=0
continue
fi
src_exists[p]=1
if ((p == root_part_num))
then
src_partition[p]=${src_root_dev#/dev/}
src_device[p]=$src_root_dev
else
src_partition[p]="${src_part_base}${p}"
src_device[p]="/dev/${src_partition[p]}"
fi
# parted sectors are 512 bytes
src_start_sector[p]=$(echo "$line" | cut -d ":" -f 2 | tr -d 's')
src_size_sectors[p]=$(echo "$line" | cut -d ":" -f 4 | tr -d 's')
part_type=$(echo "$line" | cut -d ":" -f 5)
src_mounted_dir[p]=$(echo "$src_mount_table" \
| grep -m 1 -e "^${src_device[p]}" | cut -d " " -f 2)
if [ "${src_mounted_dir[p]}" != "" ]
then
src_sync_part[p]=1
else
src_sync_part[p]=0
fi
src_name[p]=""
if [ "$part_type" != "" ]
then
src_fs_type[p]="$part_type"
else
src_fs_type[p]="--"
fi
src_label[p]="--"
if [ "${src_mounted_dir[p]}" == "/" ]
then
src_name[p]="root"
#
# If root on device other than booted SD card, root_part_num assumed to be
# booted /boot part_num + 1 and alt_root_part_num is from root device.
#
elif ((p == root_part_num)) && ((alt_root_part_num > 0))
then
src_name[p]="root**"
elif ((p == ext_part_num))
then
src_fs_type[p]="EXT"
elif [[ "$part_type" == *"linux-swap"* ]]
then
src_fs_type[p]="swap"
elif [ "${src_mounted_dir[p]}" != "" ]
then
src_name[p]="${src_mounted_dir[p]}"
fi
if [[ "$part_type" == *"ext"* ]]
then
label=`e2label ${src_device[p]} 2> /dev/null`
if [ "$label" != "" ]
then
src_label[p]="$label"
fi
fi
done
# command line
#
setup_args=""
edit_fstab_name=""
ext_label=""
verbose="no"
force_initialize=0
force_2_parts=0
force_sync=0
all_sync=0
usage_error=0
unattended=0
Unattended=0
quiet=0
custom_sync=0
leave_sd_usb_boot=0
convert_to_partuuid=0
p1_size_new=0
while [ "$1" ]
do
case "$1" in
-v|--verbose)
verbose="yes"
rsync_options=${rsync_options}v
;;
-u|--unattended)
unattended=1
;;
-U|--Unattended-init)
unattended=1
Unattended=1
;;
-q|--quiet)
unattended=1
quiet=1
rsync_options=${rsync_options}q
;;
--exclude=*|--exclude-from=*)
exclude_useropt="${exclude_useropt} $1"
;;
-s|--setup)
shift
if ! command -v $setup_command > /dev/null
then
echo "Cannot find script $setup_command for setup arg \"$1\"."
usage_error=1
fi
if [ "$setup_args" == "" ]
then
setup_args="$1"
else
setup_args="$setup_args $1"
fi
;;
-e|--edit-fstab)
shift
edit_fstab_name=$1
;;
-f|--force-initialize)
force_initialize=1
;;
-f2)
force_initialize=1
force_2_parts=1
;;
-p|--p1-size)
shift
p1_size_arg=$1
p1_size_new=$1
if [[ $p1_size_arg =~ ^[0-9MG]+$ ]]
then
if [[ $p1_size_new == *"M" ]]
then
size=$(echo $p1_size_new | cut -d M -f 1)
p1_size_new=$(($size * 1024 * 1024 / 512))
elif [[ $p1_size_new == *"G" ]]
then
size=$(echo $p1_size_new | cut -d G -f 1)
p1_size_new=$(($size * 1024 * 1024 * 1024 / 512))
fi
if [[ $p1_size_new =~ ^[0-9]+$ ]]
then
if ((!force_sync && p1_size_new < 200 * 1024))
then
echo "Setting /boot partition size less than 100 MB seems wrong so will not try."
echo " Use -F before -p to override."
exit 1
fi
else
echo "Confused by -p $p1_size_arg."
exit 1
fi
else
echo "Invalid character in -p size. Use digits + M or G like: -p 256M"
exit 1
fi
;;
-x)
set -x
;;
-a|--all-sync)
all_sync=1
;;
-m|--mountdir)
shift
mount_ok=0
for ((p = 1; p <= n_src_parts; p++))
do
if ((!src_exists[p]))
then
continue
fi
if ((!custom_sync)) && ((p != root_part_num))
then
src_sync_part[p]=0
fi
if [ "${src_mounted_dir[p]}" == "$1" ]
then
src_sync_part[p]=1
mount_ok=1
fi
done
if ((!mount_ok))
then
echo "Asking to clone directory \"$1\", but it is not mounted."
usage_error=1
fi
custom_sync=1
;;
-L|--label_partitions)
shift
ext_label=$1
;;
-l|--leave-sd-usb-boot)
leave_sd_usb_boot=1
;;
-F|--Force-sync)
force_sync=1
;;
--convert-fstab-to-partuuid)
convert_to_partuuid=1
;;
-V|--version)
echo $PGM Version: $version
exit 0
;;
-h|--help)
usage
;;
*)
if [ "$dst_disk" != "" ]
then
echo "Bad arg: $1"
echo "Run $PGM with -h or no args for usage."
exit 1
fi
dst_disk=$1
dir=`expr substr $dst_disk 1 5`
if [ "$dir" == "/dev/" ]
then
dst_disk=${dst_disk#/dev/}
fi
;;
esac
shift
done
if ((custom_sync)) && ((all_sync))
then
echo "-m and -a options at the same time conflict."
exit 1
fi
if ((custom_sync)) && ((force_initialize))
then
echo "-m and -f options at the same time conflict."
exit 1
fi
if [[ "$verbose" == "yes" ]] && ((quiet))
then
echo "-q and -v options at the same time conflict."
exit 1
fi
if ((usage_error))
then
echo ""
exit 1
fi
if ((convert_to_partuuid))
then
unattended=0
Unattended=0
fstab=/etc/fstab
fstab_tmp=/tmp/fstab
fstab_save=${fstab}.${PGM}-save
confirm "This will change your $fstab, are you sure?" "abort"
cp $fstab $fstab_tmp
printf "\nConverting $fstab from device names to PARTUUID\n"
count=0
for ((p = 1; p <= n_src_parts; p++))
do
if grep -q "^/dev/${src_partition[p]}" $fstab_tmp
then
partuuid=$(lsblk -n -o PARTUUID /dev/${src_partition[p]})
sed -i "s/\/dev\/${src_partition[p]}/PARTUUID=$partuuid/" $fstab_tmp
printf " Editing $fstab, changing /dev/${src_partition[p]} to $partuuid\n"
((++count))
fi
done
if ((count))
then
cp $fstab $fstab_save
cp $fstab_tmp $fstab
printf "Your original fstab is backed up to $fstab_save\n"
cmdline_txt=/boot/cmdline.txt
cmdline_save=$cmdline_txt.${PGM}-save
if [ -f $cmdline_txt ] && grep -q "$src_root_dev" $cmdline_txt
then
root_part=${src_partition[root_part_num]}
partuuid=$(lsblk -n -o PARTUUID $src_root_dev)
if [ "$partuuid" != "" ]
then
cp $cmdline_txt $cmdline_save
sed -i "s/\/dev\/$root_part/PARTUUID=$partuuid/" $cmdline_txt
printf " Editing $cmdline_txt, changing root=$src_root_dev to root=PARTUUID=$partuuid\n"
printf "Your original cmdline.txt is backed up to $cmdline_save\n"
fi
fi
else
printf "Could not find any $src_disk partition names in $fstab, nothing changed.\n"
fi
rm $fstab_tmp
echo ""
exit 0
fi
# dst_mount_flag enumerations:
live=1
temp=2
fail=3