6027-610 Cannot mount file system fileSystem because it does not have a manager.
Explanation
The file system had to be unmounted because a file system manager could
not be assigned. An accompanying message tells which node was the last manager.
User response
Examine error log on the last file system manager node.
Issue the mmlsdisk command to determine if a number of disks are down.
Examine the other error logs for an indication of disk or network shared disk problems.
Repair the base problem and issue the mmchdisk command if required.