From fe817674abac9a7a2a8ac53d9f2debae9c9d36be Mon Sep 17 00:00:00 2001
From: Matthew Wong <mawong@redhat.com>
Date: Tue, 16 Aug 2016 12:24:18 -0400
Subject: [PATCH] Don't bind pre-bound pvc & pv if size request not satisfied

---
 pkg/controller/volume/persistentvolume/index.go | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/pkg/controller/volume/persistentvolume/index.go b/pkg/controller/volume/persistentvolume/index.go
index 60699e6e653..55610721d9c 100644
--- a/pkg/controller/volume/persistentvolume/index.go
+++ b/pkg/controller/volume/persistentvolume/index.go
@@ -117,9 +117,14 @@ func (pvIndex *persistentVolumeOrderedIndex) findByClaim(claim *api.PersistentVo
 		//   the claim.
 		for _, volume := range volumes {
 			if isVolumeBoundToClaim(volume, claim) {
-				// this claim and volume are bound; return it,
-				// whether the claim is prebound or for volumes
-				// intended for dynamic provisioning v1
+				// this claim and volume are pre-bound; return
+				// the volume if the size request is satisfied,
+				// otherwise leave the claim pending
+				volumeQty := volume.Spec.Capacity[api.ResourceStorage]
+				volumeSize := volumeQty.Value()
+				if volumeSize < requestedSize {
+					return nil, nil
+				}
 				return volume, nil
 			}