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IBM eServer™
How to set up the z/OS® zSeries® File System
and create and access a zFS file system
business on demand software
^
© 2007 IBM Corporation
This presentation will describe the z/OS zSeries File System and how to set it up so that
you can create and access zFS file systems.
It is assumed that you are familiar with z/OS UNIX and HFS file systems and that you are
familiar with z/OS installation and service concepts.
zOS_zFS_setup.ppt
Page 1 of 18
Agenda
What is the z/OS zSeries File System?
What do you need to do to make zFS data
available?
What do you need to do to access zFS data?
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Create and access a zFS file system
© 2007 IBM Corporation
This presentation will explain what the z/OS zSeries File System is, how to configure zFS
and how to access z/OS zFS data.
zOS_zFS_setup.ppt
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What is the zSeries File System?
The z/OS zSeries File System is Physical File System software that
runs on z/OS and is part of the z/OS Distributed File Service base
element
zFS allows users to create zFS file systems and administrators to
mount the zFS file systems into the z/OS UNIX file system hierarchy
Users can then access files and directories in the zFS file systems
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Create and access a zFS file system
© 2007 IBM Corporation
The zSeries File System (zFS) is a Physical File System that runs as a colony address
space under control of z/OS UNIX. zFS is part of the z/OS Distributed File Service
base element. Users can create zFS file systems which can be mounted by an
administrator into the z/OS UNIX file system hierarchy. A zFS file system is really a
VSAM* Linear Data Set that has been formatted as a zFS file system. After the zFS
file system is mounted, users can access and create files and directories in the file
system.
* Virtual Storage Access Method
zOS_zFS_setup.ppt
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z/OS UNIX applications accessing zFS file
systems
z/OS
UNIX
appl
z/OS UNIX
zFS
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Create and access a zFS file system
© 2007 IBM Corporation
z/OS UNIX applications access zFS files and directories by invoking z/OS UNIX which, in
turn, invokes the zFS Physical File System (PFS). The zFS PFS accesses the zFS file
system on DASD.
zOS_zFS_setup.ppt
Page 4 of 18
Agenda
What is the z/OS zSeries File System?
What do you need to do to make zFS data
available?
What do you need to do to access zFS data?
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Create and access a zFS file system
© 2007 IBM Corporation
This section will describe what you need to do to make zFS data available.
zOS_zFS_setup.ppt
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What do you need to do to make zFS data
available?
Determine if you need to specify any zFS
configuration options
Define a VSAM Linear Data Set (VSAM LDS) and
Format it as a zFS file system
Mount the zFS file system
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Create and access a zFS file system
© 2007 IBM Corporation
First, you need to determine if zFS is installed properly and if any zFS configuration
options should be specified.
Second, you need to define a VSAM Linear Data Set and format it as a zFS file system.
Finally, you need to mount the zFS file system into the z/OS UNIX file system hierarchy.
zOS_zFS_setup.ppt
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Determine if you need to specify any zFS
configuration options
Ensure that zFS is installed properly
Specify zFS configuration options
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Create and access a zFS file system
© 2007 IBM Corporation
This section will discuss what you need for zFS installation.
zOS_zFS_setup.ppt
Page 7 of 18
Ensure that zFS is installed properly
The hlq.SIOELMOD library (which contains the zFS executable modules)
should be in the LNKLST concatenation. It is recommended that zFS
be at the latest service level.
In order to start the zFS physical file system, there must be a
FILESYSTYPE statement for zFS in your BPXPRMxx. Here is an
example:
FILESYSTYPE TYPE(ZFS) ENTRYPOINT(IOEFSCM)
ASNAME(ZFS,’SUB=MSTR’)
If you are running z/OS V1R6 or later*, you can specify the zFS
configuration options in a list of parmlib members with member names
of the form IOEPRMxx. The member suffixes are specified in the
PARM of the FILESYSTYPE statement. For example:
FILESYSTYPE TYPE(ZFS) ENTRYPOINT(IOEFSCM)
ASNAME(ZFS,’SUB=MSTR’) PARM(‘PRM=(01,02)’)
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Create and access a zFS file system
© 2007 IBM Corporation
To ensure that zFS is properly installed, make sure the zFS load module library is in the
LNKLST concatenation.
Also, verify that you have a FILESYSTYPE statement for zFS in your BPXPRMxx. The
slide has some examples of zFS FILESYSTYPE statements.
zOS_zFS_setup.ppt
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Ensure that zFS is installed properly …
You can also use the &SYSCLONE system symbol to identify system
specific parmlib member names in a FILESYSTYPE statement that is
shared among sysplex systems. For example:
FILESYSTYPE TYPE(ZFS) ENTRYPOINT(IOEFSCM)
ASNAME(ZFS,’SUB=MSTR’) PARM(‘PRM=(01,&SYSCLONE.)’)
There must also be a ZFS PROC that looks similar to this:
//ZFS
PROC REGSIZE=0M
//GO
EXEC PGM=BPXVCLNY,REGION=&REGSIZE,TIME=1440
//*IOEZPRM
DD DSN=SUIMGVM.&SYSNAME..ZFSPARM(IOEFSPRM),DISP=SHR
//*
PEND
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Create and access a zFS file system
© 2007 IBM Corporation
This slide mentions the &SYSCLONE system symbol and its usage in the zFS
FILESYSTYPE statement to allow system specific parmlib members for zFS.
Finally, you need to have a JCL PROC called ZFS that z/OS UNIX uses to start zFS.
zOS_zFS_setup.ppt
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Determine if you need to specify any zFS
configuration options
Ensure that zFS is installed properly
Specify zFS configuration options
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Create and access a zFS file system
© 2007 IBM Corporation
This section will discuss some zFS configuration options.
zOS_zFS_setup.ppt
Page 10 of 18
Specify zFS configuration options
There are several zFS configuration options you may want to consider.
aggrgrow=on
trace_dsn=suimgvm.private.zfstrace
The aggrgrow option is used to specify whether a zFS file system should
be automatically extended when full. (The default is off.)
The trace_dsn option is used for problem determination.
* If you are running a release lower than z/OS V1R6, the zFS
configuration options are specified in the data set member named in the
IOEZPRM DD in the ZFS PROC.
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Create and access a zFS file system
© 2007 IBM Corporation
The aggrgrow option specifies that a zFS file system will be extended automatically if it
becomes full (assuming that the zFS file system data set has a secondary allocation size
and direct access storage device space is available).
The trace_dsn option specifies the data set name of a PDSE that is RECFM=VB,
LRECL=133 with a primary allocation of at least 50 cylinders and a secondary allocation of
30 cylinders. This data set can be used during problem determination.
zOS_zFS_setup.ppt
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Define a VSAM Linear Data Set (VSAM LDS)
and format it as a zFS file system
The following is an example of a job to define a VSAM LDS and then format it as a zFS file system:
//USERIDA JOB ,’Compatibility Mode’,
// CLASS=A,MSGCLASS=X,MSGLEVEL=(1,1)
//DEFINE EXEC PGM=IDCAMS
//SYSPRINT DD SYSOUT=H
//SYSUDUMP DD SYSOUT=H
//AMSDUMP DD SYSOUT=H
//DASD0 DD DISP=OLD,UNIT=3390,VOL=SER=PRV000
//SYSIN DD *
DEFINE CLUSTER (NAME(OMVS.PRV.COMPAT.AGGR001) VOLUMES(PRV000) LINEAR CYL(100 25) SHAREOPTIONS(3))
In order to run the DEFINE step of the
example, you must have ALTER authority on
the data set profile that covers the data set.
/*
//FORMAT EXEC PGM=IOEAGFMT,REGION=0M,
// PARM=(’-aggregate OMVS.PRV.COMPAT.AGGR001 -compat’)
//SYSPRINT DD SYSOUT=H
//STDOUT DD SYSOUT=H
//STDERR DD SYSOUT=H
//SYSUDUMP DD SYSOUT=H
//CEEDUMP DD SYSOUT=H
//*
To run the FORMAT step of the example, you
must be uid 0 or have READ authority to the
SUPERUSER.FILESYS.PFSCTL profile in the
UNIXPRIV class. However, if you are running
z/OS V1R9 or if you are running z/OS V1R8 or
z/OS V1R7 with APAR OA18981 applied, you
only need ALTER authority on the data set
profile.
Note: You must specify the -compat option in the PARM of the FORMAT step as shown.
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Create and access a zFS file system
© 2007 IBM Corporation
Use the VSAM IDCAMS utility to define a VSAM Linear Data Set and use the zFS
IOEAGFMT utility to format the VSAM LDS as a zFS file system. The slide shows an
example of a two step job that defines and formats a zFS file system.
zOS_zFS_setup.ppt
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Mount the zFS file system
In order to make the zFS file system available for user access, it must be
mounted into the z/OS UNIX file system hierarchy. Here is an example
of a TSO/E MOUNT command for a zFS file system:
MOUNT FILESYSTEM(’OMVS.PRV.COMPAT.AGGR001’)
MOUNTPOINT(’/etc/zfscompat1’) TYPE(ZFS) MODE(RDWR)
PARM(’AGGRFULL(90,5)’)
Here is the same mount command issued from the z/OS UNIX shell:
/usr/sbin/mount -f OMVS.PRV.COMPAT.AGGR001 -t ZFS -o
’AGGRFULL(90,5)’ /etc/zfscompat1
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Create and access a zFS file system
© 2007 IBM Corporation
An administrator must mount the zFS file system to make it available for user access.
The mountpoint directory must exist. The PARM specified is optional. AGGRFULL(90,5)
indicates that when the file system is 90 percent full, an operator message will be issued.
Thereafter, every 5 percent that the file system becomes more full will cause another
message. So, another message will be issued when it is 95 percent full and when it is 100
percent full.
zOS_zFS_setup.ppt
Page 13 of 18
Agenda
What is the z/OS zSeries File System?
What do you need to do to make zFS data
available?
What do you need to do to access zFS data?
14
Create and access a zFS file system
© 2007 IBM Corporation
This section will discuss what you need to do to access the zFS file system.
zOS_zFS_setup.ppt
Page 14 of 18
What do you need to do to access zFS data
zFS data can be accessed in same way as any
z/OS UNIX data is accessed
z/OS UNIX applications
z/OS UNIX shell commands
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Create and access a zFS file system
© 2007 IBM Corporation
zFS data in a mounted file system can be accessed in the same way that any z/OS UNIX
data is accessed. z/OS UNIX applications and z/OS UNIX shell commands can access
zFS data in a mounted file system. z/OS UNIX permissions and ACLs* apply to zFS just
as they do to HFS. zFS has the same sysplex shared file system support as HFS.
* Access Control Lists
zOS_zFS_setup.ppt
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Final points
Documentation for zFS is in:
z/OS Distributed File Service zSeries File System
Administration (SC24-5989)
zFS Concepts and zfsadm command for zFS
z/OS Distributed File Service Messages and Codes
(SC24-5917)
IOEZxxxt messages and X’EFxxrrrr’ reason codes for zFS
z/OS Distributed File Service zSeries File System
Implementation (Redbook SG24-6580)
Redbook (updated February 2006 to include z/OS V1R7)
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Create and access a zFS file system
© 2007 IBM Corporation
Finally, refer to documentation for zFS in the referenced documents. There are many
topics that were not covered in this presentation that you can read about in these books.
zOS_zFS_setup.ppt
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Create and access a zFS file system
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zOS_zFS_setup.ppt
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Trademarks, copyrights, and disclaimers
The following terms are trademarks or registered trademarks of International Business Machines Corporation in the United States, other countries, or both:
IBM
z/OS
zSeries
UNIX is a registered trademark of The Open Group in the United States and other countries.
Product data has been reviewed for accuracy as of the date of initial publication. Product data is subject to change without notice. This document could include
technical inaccuracies or typographical errors. IBM may make improvements or changes in the products or programs described herein at any time without notice. Any
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document to IBM products, programs, or services does not imply that IBM intends to make such products, programs or services available in all countries in which IBM
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Any functionally equivalent program, that does not infringe IBM's intellectual property rights, may be used instead.
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Performance is based on measurements and projections using standard IBM benchmarks in a controlled environment. All customer examples described are presented
as illustrations of how those customers have used IBM products and the results they may have achieved. The actual throughput or performance that any user will
experience will vary depending upon considerations such as the amount of multiprogramming in the user's job stream, the I/O configuration, the storage configuration,
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ratios stated here.
© Copyright International Business Machines Corporation 2007. All rights reserved.
Note to U.S. Government Users - Documentation related to restricted rights-Use, duplication or disclosure is subject to restrictions set forth in GSA ADP Schedule
Contract and IBM Corp.
Create and access a zFS file system
zOS_zFS_setup.ppt
© 2007 IBM Corporation
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