From f7289bcdab744f67b8c858bdf61cf08226e5b148 Mon Sep 17 00:00:00 2001
From: Peter Rajnoha <prajnoha@redhat.com>
Date: Fri, 4 Oct 2013 10:41:24 +0200
Subject: [PATCH] lvm/mdraid: Fix LVM on MD activation

The 69-dm-lvm-metad.rules set some udev env. variables that makes it
possible to detect the right time to activate LVM on MD. The MD is very
similar to DM during activation - it's usable only after proper device
activation - the CHANGE event. We need to make a difference between a
CHANGE event that comes from this activation and CHANGE event that is
the outcome of the WATCH udev rule (otherwise we'd end up with LVM
activation done on each CHANGE event - which is wrong).

So we need the udev databse to be persistent during pivot to root fs
even for MD devices.
---
 modules.d/90lvm/module-setup.sh                   | 2 +-
 modules.d/90mdraid/59-persistent-storage-md.rules | 1 +
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/modules.d/90lvm/module-setup.sh b/modules.d/90lvm/module-setup.sh
index 2ef9a51..f98ffff 100755
--- a/modules.d/90lvm/module-setup.sh
+++ b/modules.d/90lvm/module-setup.sh
@@ -82,7 +82,7 @@ install() {
         } > "${initdir}/etc/lvm/lvm.conf"
     fi
 
-    inst_rules 11-dm-lvm.rules
+    inst_rules 11-dm-lvm.rules 69-dm-lvm-metad.rules
     # Gentoo ebuild for LVM2 prior to 2.02.63-r1 doesn't install above rules
     # files, but provides the one below:
     inst_rules 64-device-mapper.rules
diff --git a/modules.d/90mdraid/59-persistent-storage-md.rules b/modules.d/90mdraid/59-persistent-storage-md.rules
index bea9325..6ef858a 100644
--- a/modules.d/90mdraid/59-persistent-storage-md.rules
+++ b/modules.d/90mdraid/59-persistent-storage-md.rules
@@ -20,4 +20,5 @@ IMPORT{program}="/sbin/mdadm --detail --export $tempnode"
 IMPORT BLKID
 OPTIONS+="link_priority=100"
 OPTIONS+="watch"
+OPTIONS+="db_persist"
 LABEL="md_end"