Does Red Hat recommend exporting GFS or GFS2 with NFS or Samba in a RHEL Resilient Storage cluster, and how should I configure it if I do?

Issue

• Does Red Hat recommend and support using GFS or GFS2 for NFS exporting?
• Do I require any special mount options when using GFS2 filesystem to serve NFS or Samba services?
• Can I serve NFS in an active/active configuration on RHEL HA?
• System panics when using clustered plocks on GFS2 to grant posix locks via NFS.
• It is not possible to serve one GFS2 volume via NFS from multiple nodes at the same time if posix locks are being used for nfs locking.
• The system panics on posix_lock_file
• How do I share my GFS or GFS2 file systems over NFS?
• The dlm_plock_callback must not appear in filesystem exported via NFS, follow resolution:

kernel: lockd: grant for unknown block
kernel: dlm: dlm_plock_callback: lock granted after lock</code>