run /bin/sh with the full path from the udev rules

modules.d/90mdraid/61-mdadm.rules

@@ -10,6 +10,6 @@ KERNEL=="md*", IMPORT{program}="vol_id --export $tempnode"
 ENV{ID_FS_TYPE}=="linux_raid_member", \
     TEST!="/tmp/.mdraid_start-%k", \
     RUN+="/sbin/mdadm -I $env{DEVNAME}", \
-    RUN+="sh -c '>/tmp/.mdraid_start-%k; /bin/ln -s /sbin/mdraid_start /initqueue/mdraid_start.sh'"
+    RUN+="/bin/sh -c '>/tmp/.mdraid_start-%k; /bin/ln -s /sbin/mdraid_start /initqueue/mdraid_start.sh'"
 
 LABEL="raid_end"

modules.d/90mdraid/65-md-incremental.rules

@@ -6,4 +6,4 @@ SUBSYSTEM=="block", ACTION=="add", ENV{ID_FS_TYPE}=="linux_raid_member", \
         TEST!="/tmp/.mdraid_start-%k", \
 	IMPORT{program}="/sbin/mdadm --examine --export $tempnode", \
 	RUN+="/sbin/mdadm -I $env{DEVNAME}", \
-	RUN+="sh -c '>/tmp/.mdraid_start-%k; /bin/ln -s /sbin/mdraid_start /initqueue/mdraid_start.sh'"
+	RUN+="/bin/sh -c '>/tmp/.mdraid_start-%k; /bin/ln -s /sbin/mdraid_start /initqueue/mdraid_start.sh'"