#!/bin/bash
# We depend on udev-rules being loaded
-[ "$1" = "-d" ] && exit 0
+[[ "$1" = "-d" ]] && exit 0
# if we don't have btrfs (btrfsctl) installed on the host system,
# no point in trying to support it in the initramfs.
which btrfsctl >/dev/null 2>&1 || exit 1
+. $dracutfunctions
+[[ $debug ]] && set -x
+
+is_btrfs() { get_fs_type /dev/block/$1 |grep -q btrfs; }
+
+if [[ "$1" = "-h" ]]; then
+ rootdev=$(find_root_block_device)
+ if [[ $rootdev ]]; then
+ is_btrfs "$rootdev" || exit 1
+ fi
+fi
+
exit 0