OpenWrtExtRoot

OpenWrt: not enough disk

ImageBuilder

wget https://downloads.openwrt.org/chaos_calmer/15.05.1/ar71xx/generic/OpenWrt-ImageBuilder-15.05.1-ar71xx-generic.Linux-x86_64.tar.bz2

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apt-get install subversion build-essential libncurses5-dev zlib1g-dev gawk git ccache gettext libssl-dev xsltproc wget

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tar -xvjf OpenWrt-ImageBuilder-15.05.1-ar71xx-generic.Linux-x86_64.tar.bz2

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/home/jody/Openwrt/OpenWrt-ImageBuilder-15.05.1-ar71xx-generic.Linux-x86_64/target/linux/ar71xx/generic/profiles/tp-link.mk

define Profile/TLMR10U
NAME:=TP-LINK TL-MR10U
PACKAGES:= block-mount blkid kmod-usb-storage-extras kmod-usb-core kmod-usb2 kmod-fs-ext4 kmod-usb-storage fstools kmod-usb-serial-ftdi kmod-usb-serial-pl2303 kmod-usb-serial-ch341 kmod-usb-serial kmod-usb-serial-cp210x kmod-usb-acm usb-modeswitch kmod-mii kmod-usb-net kmod-usb-wdm kmod-usb-net-qmi-wwan uqmi
endef

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make image PROFILE=TLMR10U

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Configure package url for barrier breaker

src/gz barrier_breaker http://downloads.openwrt.org/barrier_breaker/14.07/ar71xx/generic/packages/packages
dest root /
dest ram /tmp
lists_dir ext /var/opkg-lists
option overlay_root /overlay

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This one for Chaos Calmer

root@OpenWrt:/# cat /mnt/sda1/etc/opkg.conf
dest root /
dest ram /tmp
lists_dir ext /var/opkg-lists
option overlay_root /overlay
src/gz chaos_calmer_base http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/base
src/gz chaos_calmer_luci http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/luci
src/gz chaos_calmer_management http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/management
src/gz chaos_calmer_packages http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/packages
src/gz chaos_calmer_routing http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/routing
src/gz chaos_calmer_telephony http://downloads.openwrt.org/chaos_calmer/15.05/ar71xx/generic/packages/telephony

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Use an external USB key

see: http://wiki.openwrt.org/doc/howto/extroot

you need a key with an ext4 partition, vfat will not work.

You can create your partition on your desktop, but It seems better to format it on your OpenWrt router

tools required:

opkg install e2fsprogs

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or:

#opkg install e2fsprogs kmod-usb-storage block-mount kmod-fs-ext4 kmod-scsi-generic

opkg install fstools kmod-usb-storage block-mount kmod-fs-ext4 kmod-scsi-core

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cat /proc/partitions

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mkfs.ext4 /dev/sda1

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mkdir /mnt/sda1 && touch /mnt/sda1/USB_DISK_NOT_PRESENT && chown root:root -R /mnt/sda1 && chmod 555 -R /mnt/sda1 && chmod 444 /mnt/sda1/USB_DISK_NOT_PRESENT

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mount sda1 to /mnt/sda1

mount /dev/sda1 /mnt/sda1

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then copy files:

mkdir -p /tmp/cproot
mount --bind / /tmp/cproot
tar -C /tmp/cproot -cvf - . | tar -C /mnt/sda1 -xf -
umount /tmp/cproot

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Note, other required packages:

opkg install kmod-usb-storage block-mount kmod-fs-ext4 block-hotplug

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