#!/bin/busybox sh

rescue_shell() {
    echo "-----"
    echo "!!!!!"
    echo "Something went wrong."
    echo "Dropping into busybox"
    echo "!!!!!"
    echo "-----"
    busybox --install -s
    exec /bin/sh
}

/bin/busybox --install -s

# Mount the /proc and /sys filesystems.
mount -t proc none /proc
mount -t sysfs none /sys
mount -t devtmpfs none /dev

# Do your stuff here.
echo "   "
echo "This init script assembles the RAID6 root as /dev/md3"
echo "mounts it as rootfs and, if there are no problems,"
echo "boots it up, else calls rescue_shell/busybox"
echo "   "

mdadm --assemble /dev/md3

# Mount the root filesystem.
mount -o ro /dev/md3 /realroot  || rescue_shell

# Clean up.
umount /dev
umount /proc
umount /sys

# Boot the real thing.
exec switch_root /realroot /sbin/init