Event Management Best Practices › Upgrade Considerations › zSeries File System (zFS) Structure

zSeries File System (zFS) Structure

Prior to installation, decide how you want your zSeries File System (zFS) structured. Event Management r11, delivered with CA Common Services r12 and above, is designed to use a read-only zFS that can be shared across systems and a read-write zFS for each system running Event Management. For example, it is best to mount the RO zFS at /cai/nsmem and mount the RW zFS at /cai/nsmem/RW so that the RW directory is mounted under the RO directory.

Your system must support zFS aggregates. The SYS1.PARMLIB BPXPRMxx member should have an entry such as:

FILESYSTYPE TYPE(ZFS) ENTRYPOINT(IOEFSCM) ASNAME(MVSZFS)

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

MOUNT FILESYSTEM('CAI.DIR.ZFS')
 MOUNTPOINT('/cai')
 TYPE(ZFS) MODE(RDWR)
/* */
MOUNT FILESYSTEM('CAI.CCSR14.SP00.NSMEM.RO.CAIZFS')
MOUNTPOINT('/cai/nsmem')
TYPE(ZFS) MODE(READ)
/* */
MOUNT FILESYSTEM('CAI.CCSR14.SP00.NSMEM.RW.CAIZFS')
MOUNTPOINT('/cai/nsmem/RW')
TYPE(ZFS) MODE(RDWR)
/* */

If you want the zFS to grow automatically, add the following PARM to the MOUNT directive:

PARM('AGGRGROW') 

Note the following in this example:

• The /cai directory would be added to the root directory.
• During the install, CAI.DIR.ZFS would be mounted. This is a small zFS just for directory entries.
• mkdir commands would be issued for creating the ‘/cai/nsmem’.
• During the install and the post-install fwsetup script execution, all zFS data sets would have to be mounted RDWR.