How to mount a GFS2 filesystem when quorum is lost or from a host that is not a member of the cluster on RHEL?

Solution Verified - Updated -

Issue

  • I want to mount a GFS2 filesystem without starting the cluster services in Red Hat Enterprise Linux. How is this done?
  • How can I access GFS2 to perform backups from a san snapshot presented to a machine that is not part of the cluster?
  • How can I mount a clustered logical volume group on a machine that is not part of the cluster?
  • We are trying to mount clustered volume, GFS2 filesystem on one stand alone server for recovery purpose. But volume was not getting activated, so we had changed the locking_type = 0 in /etc/lvm/lvm.conf, then it's able to activate but getting following warning

    WARNING: Locking disabled. Be careful! This could corrupt your metadata.
    

    Does this warning indicate any issue? Is it supported to mount GFS2 lvm volume with locking_type = 0?

Environment

  • Red Hat Enterprise Linux (RHEL) 6 or 7 with the Resilient Storage Add On
  • GFS2 file-system

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