6027-609 File system fileSystem unmounted 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.
Issue the mmlsdisk command to determine if a number of disks are down. Examine the other
error logs for an indication of network, disk, or virtual shared disk problems.
Repair the base problem and issue the mmchdisk command if required.