1 files changed, 74 insertions, 0 deletions
diff --git a/scripts/local-top/lvm b/scripts/local-top/lvm
new file mode 100755
index 0000000..4cf48ad
--- /dev/null
+++ b/scripts/local-top/lvm
@@ -0,0 +1,74 @@
+#!/bin/sh
+
+PREREQ="mdadm mdrun lvm2"
+
+prereqs()
+{
+	echo "$PREREQ"
+}
+
+case $1 in
+# get pre-requisites
+prereqs)
+	prereqs
+	exit 0
+	;;
+esac
+
+activate_vg()
+{
+	local vg="$1"
+
+	# Make sure that we have a non-empty argument
+	if [ -z "${vg}" ]; then
+		return 1
+	fi
+
+	# Take care of lilo boot arg, risky activating of all vg
+	case $vg in
+	fe[0-9]*)
+		vgchange -ay
+		exit 0
+		;;
+	# FIXME: check major
+	/dev/root)
+		vgchange -ay
+		exit 0
+		;;
+	esac
+
+	# Make sure that we have a d-m path
+	vg=${vg#/dev/mapper/}
+	if [ "$vg" = "$1" ]; then
+		return 1
+	fi
+
+	# Make sure that the device includes at least one dash
+	if [ "$(echo -n "$vg" | tr -d -)" = "$vg" ]; then
+		return 1
+	fi
+
+	# Split volume group from logical volume.
+	vg=$(echo ${vg} | sed -e 's#\(.*\)\([^-]\)-[^-].*#\1\2#')
+	# Reduce padded --'s to -'s
+	vg=$(echo ${vg} | sed -e 's#--#-#g')
+
+	vgchange -ay ${vg}
+}
+
+if [ -e /scripts/local-top/lvm2 ]; then
+	exit 0
+fi
+
+if [ ! -e /sbin/vgchange ]; then
+	exit 0
+fi
+
+modprobe dm-mod
+modprobe dm-snapshot
+modprobe dm-mirror
+
+activate_vg "$ROOT"
+activate_vg "$resume"
+
+exit 0