Expanding root partition and filesystem on OpenWRT - Revision history

Gyurci08 at 22:18, 19 April 2025

2025-04-19T22:18:07Z

← Older revision		Revision as of 22:18, 19 April 2025
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	[[Category:~~OpenWrt~~]]		[[Category:OpenWRT]]

	= Expanding root partition and filesystem =		= Expanding root partition and filesystem =

Gyurci08 at 20:25, 19 April 2025

2025-04-19T20:25:22Z

← Older revision		Revision as of 20:25, 19 April 2025
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	== Introduction ==		== Introduction ==

			src: https://openwrt.org/docs/guide-user/advanced/expand_root

	This instruction expands OpenWrt root partition and filesystem on x86 target.		This instruction expands OpenWrt root partition and filesystem on x86 target.

Gyurci08 at 20:24, 19 April 2025

2025-04-19T20:24:55Z

← Older revision		Revision as of 20:24, 19 April 2025
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	=== Configure startup scripts ===		=== Configure startup scripts ===

			<syntaxhighlight lang="bash">
	cat /etc/uci-defaults/70-rootpt-resize		cat << "EOF" > /etc/uci-defaults/70-rootpt-resize
	if [ ! -e /etc/rootpt-resize ] \		if [ ! -e /etc/rootpt-resize ] \
	&& type parted > /dev/null \		&& type parted > /dev/null \
Line 45:		Line 45:
	EOF		EOF

	cat /etc/uci-defaults/80-rootfs-resize		cat << "EOF" > /etc/uci-defaults/80-rootfs-resize
	if [ ! -e /etc/rootfs-resize ] \		if [ ! -e /etc/rootfs-resize ] \
	&& [ -e /etc/rootpt-resize ] \		&& [ -e /etc/rootpt-resize ] \
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	EOF		EOF

	cat > /etc/sysupgrade.conf		cat << "EOF" >> /etc/sysupgrade.conf
	/etc/uci-defaults/70-rootpt-resize		/etc/uci-defaults/70-rootpt-resize
	/etc/uci-defaults/80-rootfs-resize		/etc/uci-defaults/80-rootfs-resize
	EOF		EOF
			</syntaxhighlight>

	== Examples ==		== Examples ==
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	=== Install packages ===		=== Install packages ===

			<syntaxhighlight lang="bash">
	opkg update		opkg update
	opkg install parted losetup resize2fs		opkg install parted losetup resize2fs
			</syntaxhighlight>

	=== Expand root partition/filesystem ===		=== Expand root partition/filesystem ===

			<syntaxhighlight lang="bash">
	sh /etc/uci-defaults/70-rootpt-resize		sh /etc/uci-defaults/70-rootpt-resize
			</syntaxhighlight>

	== Automated ==		== Automated ==

			<syntaxhighlight lang="bash">
	opkg update		opkg update
	opkg install parted losetup resize2fs		opkg install parted losetup resize2fs
	wget -U "" -O expand-root.sh "https://openwrt.org/_export/code/docs/guide-user/advanced/expand_root?codeblock=0"		wget -U "" -O expand-root.sh "https://openwrt.org/_export/code/docs/guide-user/advanced/expand_root?codeblock=0"
	. ./expand-root.sh		. ./expand-root.sh
			</syntaxhighlight>

	~~Soruce: https:~~/~~/openwrt.org/docs/guide-user/advanced/expand_root~~

Gyurci08: Created page with "Category:OpenWrt = Expanding root partition and filesystem = == Introduction == This instruction expands OpenWrt root partition and filesystem on x86 target. Follow the automated section for quick setup. == Features == * Support `ext4` and `squashfs` image types. * Automatically identify the root partition and filesystem. * Expand the root partition and filesystem using free space. * Preserve the scripts through firmware upgrade. * Automatically run after firmw..."

2025-04-19T20:22:38Z

Created page with "Category:OpenWrt = Expanding root partition and filesystem = == Introduction == This instruction expands OpenWrt root partition and filesystem on x86 target. Follow the automated section for quick setup. == Features == * Support `ext4` and `squashfs` image types. * Automatically identify the root partition and filesystem. * Expand the root partition and filesystem using free space. * Preserve the scripts through firmware upgrade. * Automatically run after firmw..."

New page

[[Category:OpenWrt]]

= Expanding root partition and filesystem =

== Introduction ==

This instruction expands OpenWrt root partition and filesystem on x86 target.

Follow the automated section for quick setup.

== Features ==

* Support `ext4` and `squashfs` image types.
* Automatically identify the root partition and filesystem.
* Expand the root partition and filesystem using free space.
* Preserve the scripts through firmware upgrade.
* Automatically run after firmware upgrade.

== Instructions ==

=== Configure startup scripts ===

cat /etc/uci-defaults/70-rootpt-resize
if [ ! -e /etc/rootpt-resize ] \
&& type parted > /dev/null \
&& lock -n /var/lock/root-resize
then
ROOT_BLK="$(readlink -f /sys/dev/block/"$(awk -e '$9=="/dev/root"{print $3}' /proc/self/mountinfo)")"
ROOT_DISK="/dev/$(basename "${ROOT_BLK%/*}")"
ROOT_PART="${ROOT_BLK##*[^0-9]}"
parted -f -s "${ROOT_DISK}" \
resizepart "${ROOT_PART}" 100%
mount_root
done
touch /etc/rootpt-resize
if [ -e /boot/cmdline.txt ]
then
NEW_UUID=`blkid ${ROOT_DISK}p${ROOT_PART} | sed -n 's/.*PARTUUID="$[^"]*$".*/\1/p'`
sed -i "s/PARTUUID=[^ ]*/PARTUUID=${NEW_UUID}/" /boot/cmdline.txt
fi
reboot
fi
exit 1
EOF

cat /etc/uci-defaults/80-rootfs-resize
if [ ! -e /etc/rootfs-resize ] \
&& [ -e /etc/rootpt-resize ] \
&& type losetup > /dev/null \
&& type resize2fs > /dev/null \
&& lock -n /var/lock/root-resize
then
ROOT_BLK="$(readlink -f /sys/dev/block/"$(awk -e '$9=="/dev/root"{print $3}' /proc/self/mountinfo)")"
ROOT_DEV="/dev/${ROOT_BLK##*/}"
LOOP_DEV="$(awk -e '$5=="/overlay"{print $9}' /proc/self/mountinfo)"
if [ -z "${LOOP_DEV}" ]
then
LOOP_DEV="$(losetup -f)"
losetup "${LOOP_DEV}" "${ROOT_DEV}"
fi
resize2fs -f "${LOOP_DEV}"
mount_root
done
touch /etc/rootfs-resize
reboot
fi
exit 1
EOF

cat > /etc/sysupgrade.conf
/etc/uci-defaults/70-rootpt-resize
/etc/uci-defaults/80-rootfs-resize
EOF

== Examples ==

=== Install packages ===

opkg update
opkg install parted losetup resize2fs

=== Expand root partition/filesystem ===

sh /etc/uci-defaults/70-rootpt-resize

== Automated ==

opkg update
opkg install parted losetup resize2fs
wget -U "" -O expand-root.sh "https://openwrt.org/_export/code/docs/guide-user/advanced/expand_root?codeblock=0"
. ./expand-root.sh

Soruce: https://openwrt.org/docs/guide-user/advanced/expand_root