From: Hannes Reinecke <hare@suse.de>

If rootfs is on multipath, but platform does not have an /etc/multipath.conf
file which is not urgently needed, they system will not boot, due to:

multipathd is not started and rootfs and swap are not found:
systemctl status multipathd.service
* multipathd.service - Device-Mapper Multipath Device Controller
   Loaded: loaded (/usr/lib/systemd/system/multipathd.service; disabled; vendor preset: enabled)
   Active: inactive (dead)
Condition: start condition failed at Thu 2015-05-07 11:49:11 CEST; 7min ago
           ConditionPathExists=/etc/multipath.conf was not met


and exit to dracut shell.


Index: dracut-041/modules.d/90multipath/multipathd.service
===================================================================
--- dracut-041.orig/modules.d/90multipath/multipathd.service	2015-01-31 12:54:52.000000000 +0100
+++ dracut-041/modules.d/90multipath/multipathd.service	2015-05-08 08:13:22.714063510 +0200
@@ -6,7 +6,6 @@
 ConditionKernelCommandLine=!nompath
 ConditionKernelCommandLine=!rd.multipath=0
 ConditionKernelCommandLine=!rd_NO_MULTIPATH
-ConditionPathExists=/etc/multipath.conf
 
 [Service]
 Type=simple