Why is UDP unicast (UDPU) not recommended for use in a cluster with GFS2 in a RHEL 6 or 7 Resilient Storage cluster?
Issue
- IP multicast is disabled in my environment, but I want to create a GFS2 cluster.
- I want to use udpu as it is an available alternative, but it is said that it is not recommended in a cluster that
uses GFS2.
Environment
- Red Hat Enterprise Linux (RHEL) 6 Update 2 or higher or RHEL 7 with the Resilient Storage Add-on
- GFS2
- UDPU transport in use
- RHEL 6:
<cman transport="udpu"/>in `/etc/cluster/cluster.conf - RHEL 7:
totem { transport: udpu }in/etc/corosync/corosync.conf
- RHEL 6:
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