From 2ade15a8d17b7efa8cdf3908d28561e6573c7050 Mon Sep 17 00:00:00 2001
From: =?utf8?q?Elan=20Ruusam=C3=A4e?= <glen@pld-linux.org>
Date: Tue, 17 Nov 2009 09:30:56 +0000
Subject: [PATCH] - LVM: rewrite /dev/mapper/sys-rootfs -> /dev/sys/rootfs

svn-id: @10977
---
 mod-lvm.sh | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/mod-lvm.sh b/mod-lvm.sh
index 55fca8d..33cfb36 100644
--- a/mod-lvm.sh
+++ b/mod-lvm.sh
@@ -184,8 +184,20 @@ initrd_gen_lvm() {
 			# parse rootdev from kernel commandline if it begins with /
 			case "$ROOT" in
 				/*)
+
+				# rewrite /dev/mapper/sys-rootfs -> /dev/sys/rootfs
+				case "$ROOT" in
+					/dev/mapper/*-*)
+						ROOT=${ROOT#/dev/mapper/}
+						local VG=${ROOT%%-*}
+						local LV=${ROOT#*-}
+						ROOT=/dev/$VG/$LV
+					;;
+				esac
+
 				if [ "$ROOT" != "$ROOTDEV" ]; then
 					ROOTDEV=$ROOT
+
 					echo "LVM: Using 'root=$ROOTDEV' from kernel commandline"
 					local tmp=${ROOTDEV#/dev/}
 					if [ "$tmp" != "$ROOTDEV" ]; then
-- 
2.44.0