Event Management › File Structure Considerations on z/OS › zSeries File System Architecture

zSeries File System Architecture

The zSeries File System (zFS) address space must be running under z/OS UNIX.

Prior to installing, decide how you want your zFS to be structured. Event Management is designed to use a read-only (RO) zFS that can be shared across systems and a read-write (RW) zFS for each system running Event Management. Mount the RW directory under the RO directory. For example, you might mount RO zFS at /cai/nsmem and mount the RW zFS at /cai/nsmem/RW. (For Agent Technology, the reverse is true: the RO directory is under the RW directory. The Agent Technology zFS files are shown in the following example as well as the Event Management zFS files.)

A typical BPXPRMxx mount setup might use the following example statements:

MOUNT          FILESYSTEM('CAI.DIR.HFS')        
               MOUNTPOINT('/cai')                             
               TYPE(HFS)  MODE(RDWR)                          
/*                                                           */
MOUNT          FILESYSTEM('CAI.NSMEM.RO.CAIZFS')  
               MOUNTPOINT('/cai/nsmem')                        
               TYPE(ZFS)  MODE(READ)                           
/*                                                            */
MOUNT          FILESYSTEM('CAI.NSMEM.RW.CAIZFS')  
               MOUNTPOINT('/cai/nsmem/RW')
   	       PARM('AGGRFULL(90,5)')                     
               TYPE(ZFS)  MODE(RDWR)                    
/*                                                            */
MOUNT          FILESYSTEM('CAI.AGENT.RW.CAIZFS')  
               MOUNTPOINT('/cai/agent')
	       PARM('AGGRFULL(90,5)')                        
               TYPE(ZFS)  MODE(RDWR)                           
/*                                                            */
MOUNT          FILESYSTEM('CAI.AGENT.RO.CAIZFS')  
               MOUNTPOINT('/cai/agent/services/bin')           
               TYPE(ZFS)  MODE(READ)

Note the following in this example:

• The /cai directory is added to the root directory.
• During the installation, CAI.DIR.HFS is mounted. This is a small HFS just for directory entries.
• mkdir commands are issued for creating the '/cai/nsmem' and '/cai/agent' directories.
• During the installation and the post-installation fwsetup script execution, all zFS data sets are mounted RDWR.