File udev-Check-for-DM_NR_VALID_PATHS.patch of Package lvm2.631

From b8354ac161b5ab8a4f5842201d7ee69f5089c6dc Mon Sep 17 00:00:00 2001
From: Hannes Reinecke <hare@suse.de>
Date: Thu, 12 Jun 2014 17:07:31 +0200
Subject: [PATCH] udev: Check for DM_NR_VALID_PATHS
References: bnc#875233

When the device becomes inaccessible we must not run any program
requiring disk access, as this will stall and cause udev to
eventually timeout this event.

So check for DM_NR_VALID_PATHS before calling these programs.

References: bnc#875233

Signed-off-by: Hannes Reinecke <hare@suse.de>
---

 udev/10-dm.rules.in           |    1 -
 udev/13-dm-disk.rules.in      |    2 ++
 udev/69-dm-lvm-metad.rules.in |    1 +
 3 files changed, 3 insertions(+), 1 deletion(-)

--- a/udev/10-dm.rules.in
+++ b/udev/10-dm.rules.in
@@ -115,7 +115,6 @@ ENV{DM_UDEV_DISABLE_DM_RULES_FLAG}!="1",
 
 # We have to ignore further rule application for inappropriate events
 # and devices. But still send the notification if cookie exists.
-ENV{DM_UUID}=="mpath-?*", ENV{DM_ACTION}=="PATH_FAILED", GOTO="dm_disable"
 ENV{DM_UUID}=="CRYPT-TEMP-?*", GOTO="dm_disable"
 ENV{DM_UUID}!="?*", ENV{DM_NAME}=="temporary-cryptsetup-?*", GOTO="dm_disable"
 
--- a/udev/13-dm-disk.rules.in
+++ b/udev/13-dm-disk.rules.in
@@ -19,8 +19,10 @@ ENV{DM_UUID}=="?*", SYMLINK+="disk/by-id
 
 ENV{DM_SUSPENDED}=="1", GOTO="dm_end"
 ENV{DM_TARGET_TYPES}=="|*error*", GOTO="dm_end"
+ENV{DM_NR_VALID_PATHS}=="0", GOTO="dm_blkid_end"
 
 (BLKID_RULE)
+LABEL="dm_blkid_end"
 ENV{DM_UDEV_LOW_PRIORITY_FLAG}=="1", OPTIONS+="link_priority=-100"
 OPTIONS+="watch"
 ENV{DM_TARGET_TYPES}=="*snapshot-origin*", OPTIONS+="link_priority=-90"
--- a/udev/69-dm-lvm-metad.rules.in
+++ b/udev/69-dm-lvm-metad.rules.in
@@ -19,6 +19,7 @@ SUBSYSTEM!="block", GOTO="lvm_end"
 
 # Device-mapper devices are processed only on change event or on supported synthesized event.
 KERNEL=="dm-[0-9]*", ENV{DM_UDEV_RULES_VSN}!="?*", GOTO="lvm_end"
+KERNEL=="dm-[0-9]*", ENV{DM_NR_VALID_PATHS}=="0", GOTO="lvm_end"
 
 # Only process devices already marked as a PV - this requires blkid to be called before.
 ENV{ID_FS_TYPE}=="LVM2_member|LVM1_member", RUN+="(LVM_EXEC)/lvm pvscan --cache --activate ay --major $major --minor $minor"