6027-2793 [E] Contents of local fileName file are invalid. Node may be unable to be elected group leader.
Explanation
In an environment where tie-breaker disks are used,
the contents of the ballot file have become invalid, possibly because
the file has been overwritten by another application. This node will
be unable to be elected group leader.
User response
Run mmcommon resetTiebreaker,
which will ensure the GPFS™ daemon
is down on all quorum nodes and then remove the given file on this
node. After that, restart the cluster on this and on the other nodes.