Samba fails to copy to shares with NFS filesystems

If the filesystem is mounted over NFS and then shared through Samba then drag and drop copying from a Windows 7 clients fails. File creation and deletion works properly. This is a regression as it works in Ubuntu Precise.

The error message is "there is not enough space on $share. You need an additional 1KB to copy these files.

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: samba 2:4.1.6+dfsg-1ubuntu2.14.04.3
ProcVersionSignature: Ubuntu 3.13.0-34.60-generic 3.13.11.4
Uname: Linux 3.13.0-34-generic x86_64
ApportVersion: 2.14.1-0ubuntu3.3
Architecture: amd64
Date: Mon Sep 1 02:16:29 2014
NmbdLog:

ProcEnviron:
 TERM=screen
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SambaServerRegression: Yes
SmbConfIncluded: Yes
SmbLog:
 failed to retrieve printer list: NT_STATUS_UNSUCCESSFUL
   failed to retrieve printer list: NT_STATUS_UNSUCCESSFUL
SourcePackage: samba
UbuntuFailedConnect: Yes
UpgradeStatus: No upgrade log present (probably fresh install)