How do you bind mount a GFS2 file-system?

Environment

• Red Hat Enterprise Linux Server 5 (with the High Availability and Resilient Storage Add Ons)
• Red Hat Enterprise Linux Server 6 (with the High Availability and Resilient Storage Add Ons)
• Red Hat Enterprise Linux Server 7 (with the High Availability and Resilient Storage Add Ons)
• Red Hat Enterprise Linux Server 8 (with the High Availability and Resilient Storage Add Ons)

Issue

• How can you bind a GFS2 filesystem to a mount point?

Resolution

For RHEL 5 ( rgmanager ):

• How to bind mount a GFS2 Filesystem on RHEL5?

For RHEL 6 ( rgmanager ):

• How to bind mount a GFS2 Filesystem on RHEL6?

For RHEL 7 and 8 ( pacemaker ):

• Pacemaker's Filesystem resource agent can be used to create the bind mount as discussed in below documentation:
  • Is there a resource agent for RHEL 5, 6, 7, 8 or 9 High Availability clusters that can create a bind mount of a subdirectory of a file system managed by the cluster resource manager?

• When using a gfs2 active/active filesystem the resource can be cloned for concurrent bind mounts on multiple servers:

    # After creating the original filesystem resource:
    # pcs resource create <resource id> Filesystem device=<original mount point> directory=<new mount point> fstype=none options=bind clone interleave=true --group <gfs2 group>
    
    $ pcs resource create bindmnt Filesystem device=/mnt/gfs1 directory=/bind fstype=none options=bind clone interleave=true --group gfs2grp-clone
  

• Additional Note: The bind resource must be started after the original filesystem either using resource groups or constraints.

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