From 365764df825bad35afb0c255c6ad7e7adfc0caef Mon Sep 17 00:00:00 2001
From: "James E. Blair" <jeblair@hp.com>
Date: Wed, 20 Jun 2012 10:23:40 -0700
Subject: [PATCH] Sync before snapshots.

The filesystem state for an image is not guaranteed, so do the
best we can to make it consistent.

Change-Id: Ie59a83bc8d16bd88f0640bface3643b191053663
---
 devstack-vm-update-image.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/devstack-vm-update-image.py b/devstack-vm-update-image.py
index 01be085d..b96f6934 100755
--- a/devstack-vm-update-image.py
+++ b/devstack-vm-update-image.py
@@ -196,6 +196,8 @@ def configure_server(server, branches):
         client.ssh('run custom script %s' % bn,
             'chmod +x /tmp/%s && /tmp/%s' % (bn, bn))
 
+    client.ssh('sync', 'sync && sleep 5')
+
 def snapshot_server(client, server, name):
     print 'Saving image'
     if hasattr(client.images, 'create'): #v1.0