Online fencing migration from custom to SCSI3 mode might fail (4189051, 4189048)

The online fencing migration (OCPR) operation fails when an attempt is made to switch the mode from customized to SCSI3 mode. This issue is observed when CPS-based fencing is configured in a VCS cluster.

The failure occurs when the OCPR operation is performed using CPI with the -fencing option and the 5th option is chosen, and the steps for Replace/Modify/Add are followed as mentioned. The process does not complete successfully and the coordination disks changes are rolled back automatically. The failure occurs during the vxfenswap operation, and the failure logs are stored in the log file that is located at /var/VRTSvcs/log/vxfen/vxfenswap.log.*.

Workaround: No workaround.