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Auto resize SD card after dd copy - Jetson Xavier
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#!/bin/bash | |
# Copyright (c) 2021, Trung Kien | |
# Copyright (c) 2019, Lufus | |
# | |
# Redistribution and use in source and binary forms, with or without | |
# modification, are permitted provided that the following conditions | |
# are met: | |
# * Redistributions of source code must retain the above copyright | |
# notice, this list of conditions and the following disclaimer. | |
# * Lufus name may not be used to endorse or promote products derived | |
# from this software without specific prior written permission. | |
# | |
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ``AS IS'' AND ANY | |
# EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR | |
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR | |
# CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, | |
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, | |
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY | |
# OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
# This is a script to relocate partitions 2..11 to the end of mmcblk0 device | |
# and expands root partition and file system to maximum size of SD card without reboot | |
# Script can be executed right on jetson nano or any other linux machine. | |
# Just make sure that you SD card is /dev/mmcblk0 device | |
# Instructions: | |
# 1. open terminal | |
# 2. open a new file for edit `nano jn_sd_resize.sh` | |
# 3. paste the code, save and exit nano | |
# 4. call `chmod +x jn_sd_resize.sh` | |
# 5. run script with sudo `sudo ./jn_sd_resize.sh` | |
set -e | |
end_sector="$(sfdisk -d /dev/mmcblk0 | grep "last-lba:" | cut -d' ' -f2)" | |
echo "$end_sector" | |
echo "/dev/mmcblck0 device has $(($end_sector*512/1000/1000/1000))G size card" | |
echo "This script will move partitions p2..p11 to the end of /dev/mmcblk0 device" | |
size="$(cat /sys/block/mmcblk0/mmcblk0p1/size)" | |
echo "Current size of root file system is $(($size*512/1000/1000/1000))G" | |
# Move backup GPT header to end of disk | |
sgdisk --move-second-header /dev/mmcblk0 | |
# Backup original partition table | |
# It can be used with command 'sudo sgdisk --load-backup=mmc_orig.ptt /dev/mmcblk0' | |
# to restore original partition in case of fail | |
sgdisk --backup=mmc_orig.ptt /dev/mmcblk0 | |
# Read partition information into array | |
for p in {1..11} | |
do | |
p_n[p]="$(sgdisk -i $p /dev/mmcblk0 | grep "Partition name" | cut -d\' -f2)" | |
sleep 0.01 | |
p_t[p]="$(sgdisk -i $p /dev/mmcblk0 | grep "Partition GUID code:" | cut -d' ' -f4)" | |
sleep 0.01 | |
p_u[p]="$(sgdisk -i $p /dev/mmcblk0 | grep "Partition unique GUID:" | cut -d' ' -f4)" | |
sleep 0.01 | |
p_s[p]="$(cat /sys/block/mmcblk0/mmcblk0p$p/size)" | |
sleep 0.01 | |
done | |
# Calculate new locations for partitions | |
for p in {11..2} | |
do | |
p_ed[p]=$end_sector | |
p_st[p]=$(($end_sector-${p_s[p]})) | |
end_sector=${p_st[p]} | |
done | |
# Save start sector for root partition | |
p_st[1]="$(cat /sys/block/mmcblk0/mmcblk0p1/start)" | |
echo "Partitions [1..11] read done" | |
echo "Saving data from parttions [2..11]..." | |
for p in {2..11} | |
do | |
dd if=/dev/mmcblk0p"$p" of=~/.jnp-"$p".img | |
echo "Backup partition $p: ${p_n[p]} ${p_t[p]} ${p_u[p]} ${p_s[p]} new start ${p_st[p]} end ${p_ed[p]}" | |
done | |
echo "Done" | |
for p in {11..2} | |
do | |
# Relocate partition | |
echo "Relocating ${p_n[p]} partition" | |
sgdisk -d $p -n $p:"${p_st[p]}":0 -c $p:"${p_n[p]}" -t $p:"${p_t[p]}" -u $p:"${p_u[p]}" /dev/mmcblk0 | |
sleep 0.5 | |
done | |
partprobe /dev/mmcblk0 | |
echo "Restore data to parttions [2..11]..." | |
for p in {2..11} | |
do | |
dd of=/dev/mmcblk0p"$p" if=~/.jnp-"$p".img | |
echo "Partition $p data restored" | |
rm -f ~/.jnp-"$p".img | |
done | |
echo "Resizing root file system..." | |
# Extending root (APP) partition | |
sgdisk -d 1 -n 1:"${p_st[1]}":0 -c 1:"${p_n[1]}" -t $p:"${p_t[1]}" -u $p:"${p_u[1]}" /dev/mmcblk0 | |
partprobe /dev/mmcblk0 | |
# Resizing file system | |
resize2fs /dev/mmcblk0p1 | |
sleep 0.5 | |
size="$(cat /sys/block/mmcblk0/mmcblk0p1/size)" | |
echo "New size of root file system is $(($size*512/1000/1000/1000))G" | |
# Removing partition table backup | |
rm -f mmc_orig.ptt |
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