[PATCH 1/2] Wait for udev to settle before trying to find dmraid sets in udev DB

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I hit the race fixed by this during some local dmraid install testing
while investigating bug 527035.

This patch is intended for both F-12 and the devel branch.
---
 storage/devicetree.py |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/storage/devicetree.py b/storage/devicetree.py
index a9b74eb..cce8013 100644
--- a/storage/devicetree.py
+++ b/storage/devicetree.py
@@ -1664,6 +1664,10 @@ class DeviceTree(object):
 
                 self._addDevice(dm_array)
 
+                # Wait for udev to scan the just created nodes, to avoid a race
+                # with the udev_get_block_device() call below.
+                udev_settle()
+
                 # Get the DMRaidArrayDevice a DiskLabel format *now*, in case
                 # its partitions get scanned before it does.
                 dm_array.updateSysfsPath()
-- 
1.6.5.rc2

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