File 0016-udev-md-raid-assembly.rules-Skip-non-ready-devices.patch of Package mdadm.7989

From 3a77acd7170199adc690332ded37c41f067c720e Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <>
Date: Mon, 27 Mar 2017 11:15:44 +1100
Subject: [PATCH] udev-md-raid-assembly.rules: Skip non-ready devices
References: bsc#956236

If a device isn't fully initialized (e.g if it should be
handled by multipathing) it should not be considered for
md/RAID auto-assembly.  Doing so can cause incorrect results
such as causing multipath to fail during startup.

There is a convention that the udev environment variable
SYSTEMD_READY be set to zero for such devices.  So change
the mdadm rules to ignore devices with SYSTEMD_READY==0.

Signed-off-by: Hannes Reinecke <>
Signed-off-by: NeilBrown <>
Signed-off-by: Jes Sorensen <>
 udev-md-raid-assembly.rules | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/udev-md-raid-assembly.rules b/udev-md-raid-assembly.rules
index d0d440a..8ca232a 100644
--- a/udev-md-raid-assembly.rules
+++ b/udev-md-raid-assembly.rules
@@ -7,6 +7,9 @@ ENV{ANACONDA}=="?*", GOTO="md_inc_end"
 SUBSYSTEM!="block", GOTO="md_inc_end"
+# skip non-initialized devices
+ENV{SYSTEMD_READY}=="0", GOTO="md_inc_end"
 # handle potential components of arrays (the ones supported by md)
 ENV{ID_FS_TYPE}=="linux_raid_member", GOTO="md_inc"
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