Red Hat LINUX VIRTUAL SERVER 4.6 - ADMINISTRATION Installationshandbuch PDF herunterladen (Seite 87)

Chapter 4. Installing and configuring z/VM 67

To understand this possibility, refer to Figure 4-16. The z/VM system with the lower device

addresses starting at E340 should perform an IPL fine (though you may see a warning at

system startup time about duplicate volume labels). However, if the z/VM system starting at

device address F000 performs an IPL, the 540RES volume will be used, but the remaining

volumes in the system are searched for by volume label, not by device address. Because

z/VM system 1’s addresses are lower than z/VM system 2’s, system 2 will be using system

1’s volumes. This is not good for either system!

Figure 4-16 The problem with two z/VM systems with identical volume labels

In previous books a REXX EXEC and an XEDIT macro were provided to help in the process

of relabeling system volumes. However, if you followed the previous steps, you will have only

one standard label, 610RES. The EXEC and macro are no longer provided because they relied

on standard labels. However, high-level steps are still included. If you modified all labels

except for the first one at install time, it is usually not necessary to perform the steps in this

section.

If you do need to relabel the system volumes, perform the following steps:

򐂰 “Modifying labels in the SYSTEM CONFIG file” on page 67

򐂰 “Modifying labels in the USER DIRECT file” on page 69

򐂰 “Changing the labels on the five volumes” on page 69

򐂰 “Shutting down your system and restarting it” on page 70

4.11.1 Modifying labels in the SYSTEM CONFIG file

An HMC Integrated 3270 Console session will be needed in this section because z/VM will

have to be restarted with a FORCE option.

Perform the following steps:

1. Start a 3270 session. It can be a 3270 emulator session for now, or all of the steps can be

done from the HMC.

2. Note the first five CP-owned volumes using the QUERY CPOWNED command. In this

example they are D850-D854:

==> q cpowned

1 610RES D850 Own Online and attached

Important: This process must be done as documented. Making a mistake in one of the

steps can easily result in an unusable system. Check your steps carefully and your system

will come back with no problems. Try to do all steps in succession in a short amount of

time.

530RES 530W02

530W01

530PAG530SPL

530RES 530W02

530W01

530PAG530SPL

E340

E341 E342 E343 E344

F002F001

F003

F004

F000

z/VM system 1

z/VM system 2

LPAR1

1 2 ... 82 83 84 85 86 87 88 89 90 91 92 ... 295 296

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