Installing Your Product from Pax-Enhanced ESD › Allocate and Mount a File System

Allocate and Mount a File System

You can use the zSeries File System (zFS) or hierarchical file system (HFS) for ESD downloads.

This procedure describes how to perform the following tasks:

• Allocate a zFS or an HFS.
• Create a mount point in an existing maintenance USS directory of your choice.
• Mount the file system on the newly created mount point.

  Note: You must have SUPERUSER authority to do this.

• Optionally, permit write access to anyone in the same group as the person who created the directory.

  Important! USS commands are case-sensitive.

Follow these steps:

1. Allocate the file system by customizing one of the following samples to your site's requirements:
   • On a zFS, use the following sample:

     //DEFINE   EXEC PGM=IDCAMS
     //SYSPRINT DD   SYSOUT=*
     //SYSUDUMP DD   SYSOUT=*
     //AMSDUMP  DD   SYSOUT=*
     //SYSIN    DD *
       DEFINE CLUSTER ( +
       NAME(your_zFS_dataset_name) +
       STORAGECLASS(class) +
       LINEAR +
       CYL(primary secondary) +
       SHAREOPTIONS(3,3) +
       )
     /*
     //FORMAT   EXEC PGM=IOEAGFMT,REGION=0M,
     // PARM=('-aggregate your_zFS_dataset_name -compat')
     //SYSPRINT DD   SYSOUT=*
     //SYSUDUMP DD   SYSOUT=*
     //STDOUT   DD   SYSOUT=*
     //STDERR   DD   SYSOUT=*
     //CEEDUMP  DD   SYSOUT=*
     //*
     

   • On an HFS, use the following sample:

     //ALCHFS EXEC PGM=IEFBR14 
     //CAESD  DD   DSN=yourHFS_dataset_name, 
     //            DISP=(NEW,CATLG,DELETE),UNIT=3390, 
     //            DSNTYPE=HFS,SPACE=(CYL,(primary,secondary,1)) 
     

   The file system is allocated.

   Note: Ensure that the zFS or HFS data set name that you use conforms to your data set naming conventions for USS file systems. If the allocation of the file system data set fails, it is because of environmental settings not allowing for the allocation. On an HFS, try using the ISPF 3.2 Data Set Utility to allocate your HFS data set.

2. Create a mount point for the file system. This example shows how to create a /CA/CAESD directory in an existing directory, /u/maint. From the TSO OMVS shell, enter the following commands:

   cd /u/maint/
   mkdir CA
   cd CA
   mkdir CAESD
   

   Note: This document refers to this structure as yourUSSESDdirectory.

   The mount point is created.

3. Mount the file system by customizing one of the following samples to your site's requirements:
   • On a zFS, use the following sample:

     MOUNT FILESYSTEM('your_zFS_dataset_name')
           MOUNTPOINT('yourUSSESDdirectory')
           TYPE(ZFS)  MODE(RDWR)
           PARM(AGGRGROW)
     

   • On an HFS, use the following sample:

     MOUNT FILESYSTEM('your_HFS_dataset_name') 
           MOUNTPOINT('yourUSSESDdirectory') 
           TYPE(HFS)  MODE(RDWR)
     

   The file system is mounted.

4. (Optional) Set security permissions for the directory. You can use the chmod command to let other users access the ESD directory and its files. For example, to allow write access to the ESD directory for other users in your USS group, from the TSO OMVS shell, enter the following command:

   chmod -R 775 /yourUSSESDdirectory/ 
   

   Write access is granted.

   Note: For more information about the chmod command, see the IBM z/OS UNIX System Services User Guide (SA22-7802).