The Virtualization Cookbook for SLES 10 SP2 - z/VM - IBM
The Virtualization Cookbook for SLES 10 SP2 - z/VM - IBM
The Virtualization Cookbook for SLES 10 SP2 - z/VM - IBM
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VSWITCH SYSTEM VSW1 Type: VSWITCH Connected: 0 Maxconn: INFINITE<br />
PERSISTENT RESTRICTED NONROUTER Accounting: OFF<br />
VLAN Unaware<br />
MAC address: 02-00-03-00-00-01<br />
State: Ready<br />
IPTimeout: 5 QueueStorage: 8<br />
Isolation Status: OFF<br />
RDEV: <strong>10</strong>04.P00 VDEV: <strong>10</strong>04 Controller: DTCVSW1<br />
RDEV: 1<strong>10</strong>0.P00 VDEV: 1<strong>10</strong>0 Controller: DTCVSW2 BACKUP<br />
This shows the controller is named DTCVSW1.<br />
► Use the NETSTAT command with the controller name to determine the maintenance of the<br />
TCPIP MODULE:<br />
==> netstat tcp dtcvsw1 level<br />
<strong>VM</strong> TCP/IP Netstat Level 540 TCP/IP Server Name: DTCVSW1<br />
<strong>IBM</strong> 2084; z/<strong>VM</strong> Version 5 Release 4.0, service level 0903 (64-bit), <strong>VM</strong> TCP/IP Lev<br />
el 540; RSU 0903 running TCPIP MODULE E2 dated 12/17/09 at <strong>10</strong>:53<br />
TCP/IP Module Load Address: 00C2<strong>10</strong>00<br />
► This shows in<strong>for</strong>mation about the TCPIP MODULE. Use the TCPSLVL command and the<br />
complete file specification (TCPIP MODULE E in this example) to get more in<strong>for</strong>mation. Of<br />
particular interest is the latest APAR applied to TCTOOSD:<br />
5.4 Applying a PTF<br />
==> tcpslvl tcpip module e<br />
DTCLVL3306I SLVL data obtained; file TCPIP SLVLDATA A created<br />
==> x TCPIP SLVLDATA<br />
SLVL TCPIP PK676<strong>10</strong><br />
...<br />
SLVL TCTOOSD PK98608<br />
...<br />
You may determine that you need to apply a specific fix or PTF to your system. For example,<br />
an Authorized Program Analysis Report (APAR), <strong>VM</strong>64670, was opened when Linux guests<br />
were hanging intermittently. <strong>The</strong> summary of the APAR is as follows:<br />
PROBLEM SUMMARY: LINUX USER HUNG BECAUSE SVPBK LOCK HELD<br />
USERS AFFECTED: All users of z/<strong>VM</strong> running Linux guests.<br />
PROBLEM DESCRIPTION: Linux guests may become hung due to a problem in managing a lock<br />
word. This problem is timing-related and may occur intermittently.<br />
PROBLEM CONCLUSION: Lock word processing in HCPWED is updated to properly handle all<br />
possible states of the lock.<br />
<strong>The</strong> APAR was assigned the following Programming Temporary Fix (PTF) numbers <strong>for</strong> each<br />
of the following z/<strong>VM</strong> releases:<br />
z/<strong>VM</strong> 5.3 UM32809<br />
z/<strong>VM</strong> 5.4 UM328<strong>10</strong><br />
z/<strong>VM</strong> 6.1 UM32811<br />
So <strong>for</strong> z/<strong>VM</strong> 6.1, you want to apply PTF UM32811. Following is an example of how to do so.<br />
Chapter 5. Servicing z/<strong>VM</strong> 85
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