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?

Solution Verified - Updated -

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>

Environment

  • RHEL 6 or 7 with the Resilient Storage Add On
  • Global File System 2 (gfs2)

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