RHEL6.6 or RHEL7.0: Linux NFS4 server no longer gives out NFS4 delegations - no CB_NULL seen
Issue
- Linux NFS server no longer gives out a NFS4 delegation in RHEL6.6 kernel
- Linux NFS server unable to setup the NFS4 client callback path - CB_NULL never sent to the NFS client
Environment
- Red Hat Enterprise Linux 6.6 (NFS server)
- kernel 2.6.32-502.el6 and above
- kernel before 2.6.32-642.el6
- Red Hat Enterprise Linux 7.0 (NFS server)
- kernels earlier than 3.10.0-229.*el7
- NFSv4
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