initramfs hook to add modules/files for LVM thin/cache LV into initrd.

thin-provisioning-tools.sh

#!/bin/sh
# see: https://bugzilla.redhat.com/show_bug.cgi?id=921235
# http://forums.debian.net/viewtopic.php?f=5&t=119644

PREREQ="lvm2"

prereqs()
{
    echo "$PREREQ"
}

case $1 in
prereqs)
    prereqs
    exit 0
    ;;
esac

if [ ! -x /usr/sbin/cache_check ]; then
    exit 0
fi

. /usr/share/initramfs-tools/hook-functions

copy_exec /usr/sbin/cache_check
copy_exec /usr/sbin/cache_dump
copy_exec /usr/sbin/cache_repair
copy_exec /usr/sbin/cache_restore
copy_exec /usr/sbin/thin_check
copy_exec /usr/sbin/thin_dump
copy_exec /usr/sbin/thin_repair
copy_exec /usr/sbin/thin_restore

for x in dm_cache dm_cache_smq dm_thin_pool; do
	manual_add_modules ${x}
done