Setting up the z/OS UNIX file system

If you are a system programmer, you will set up and manage the z/OS® UNIX file system, including the following tasks:

Allocating the root file system.
Mounting the root file system by placing a ROOT statement in the BPXPRMxx member of SYS1.PARMLIB. During initialization, the system mounts the file systems in the ROOT statement and in all MOUNT statements in BPXPRMxx.
You can also change the active MOUNT attributes of the root without having to reIPL by using the TSO/E MOUNT and UNMOUNT commands. However, if you have any users logged on or applications running, this method can be disruptive.
Adding directories to the root file system. You can use an empty directory as a mount point for a file system that you are mounting.
Adding MOUNT statements in BPXPRMxx for all file systems that you mount so that they are mounted whenever the system is IPLed.
If a file system is not mounted, the user does not have access to it. The BPXPRMxx member can contain MOUNT statements for each of the file systems that you created. You can also create a REXX exec that contains multiple MOUNT statements, one for each of the file systems.
Various methods for mounting are:
- Using the automount facility
- Using a TSO/E CLIST or REXX exec
- Issuing the TSO/E MOUNT command from /etc/rc using the tso or tsocmd shell command. For example:
```
/bin/tso "mount filesystem(OMVS.ZFS.F96) mountpoint('/u/d96') type(zfs) mode(read)"
```
- Running the REXX exec /usr/sbin/mount from /etc/rc. For example:
```
/usr/sbin/mount  -f  OMVS.ZFS.D96 /u/d96
```
- Using the /sample/samples/mountx utility
- Using the mount shell command
- Using an automation product such as Tivoli® NetView® for z/OS for mounting a file system