Is anybody running nfs4 for their repository on Red Hat?

Is anybody running nfs4 for their repository on Red Hat?  We are having locking issues.  When we check something in, it locks the whole directory and nobody else can do any work.

 

These are our settings.  I already have a case open with HP support.

TZS_RD/DEV/HPOO_SHARE1 /development0/tzs/shared nfs4 auto,rw,nodev,sync,_netdev,proto=tcp,retry=10,rsize=32768,wsize=32768,actimeo=3,hard,intr 0 0

 

Thanks,

Don