From 51df57bb0b9cf3513c7181143528a2df2202fef4 Mon Sep 17 00:00:00 2001
From: Michael Marineau <michael.marineau@coreos.com>
Date: Tue, 14 Oct 2014 12:10:29 -0700
Subject: [PATCH] ami: wait for new volume to become available before attaching

Today EC2's volume creation is a bit less instant than usual.
---
 oem/ami/build_ebs_on_ec2.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/oem/ami/build_ebs_on_ec2.sh b/oem/ami/build_ebs_on_ec2.sh
index a3b45a4569..52b844838d 100755
--- a/oem/ami/build_ebs_on_ec2.sh
+++ b/oem/ami/build_ebs_on_ec2.sh
@@ -122,6 +122,8 @@ echo "Building AMI in zone $zone, region id $akiid"
 # Create and mount temporary EBS volume with file system to hold new AMI image
 volumeid=$(ec2-create-volume --size $size --availability-zone $zone |
   cut -f2)
+while ! ec2-describe-volumes "$volumeid" | grep -q available
+  do sleep 1; done
 instanceid=$(curl --fail -s http://instance-data/latest/meta-data/instance-id)
 echo "Attaching new volume $volumeid locally (instance $instanceid)"
 ec2-attach-volume --device /dev/sdi --instance "$instanceid" "$volumeid"