From 5bc556dd30a50abf42ac5e9a1d6832768363c362 Mon Sep 17 00:00:00 2001
From: Michael Hanselmann <hansmi@google.com>
Date: Thu, 26 Nov 2009 16:17:42 +0100
Subject: [PATCH] cmdlib: Work around race condition in DRBD before version
8.0.13
DRBD goes into sync mode for a short amount of time after
executing the "resize" command. DRBD 8.x below version
8.0.13 contains a bug whereby calling "resize" in sync
mode fails.
Signed-off-by: Michael Hanselmann <hansmi@google.com>
Reviewed-by: Iustin Pop <iustin@google.com>
---
lib/cmdlib.py | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/lib/cmdlib.py b/lib/cmdlib.py
index 3872d7c58..c149a229d 100644
--- a/lib/cmdlib.py
+++ b/lib/cmdlib.py
@@ -7182,6 +7182,14 @@ class LUGrowDisk(LogicalUnit):
self.cfg.SetDiskID(disk, node)
result = self.rpc.call_blockdev_grow(node, disk, self.op.amount)
result.Raise("Grow request failed to node %s" % node)
+
+ # TODO: Rewrite code to work properly
+ # DRBD goes into sync mode for a short amount of time after executing the
+ # "resize" command. DRBD 8.x below version 8.0.13 contains a bug whereby
+ # calling "resize" in sync mode fails. Sleeping for a short amount of
+ # time is a work-around.
+ time.sleep(5)
+
disk.RecordGrow(self.op.amount)
self.cfg.Update(instance, feedback_fn)
if self.op.wait_for_sync:
--
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