Document revision date: 19 July 1999

Chapter 10
10	Maintaining an OpenVMS Cluster System
10.1	Backing Up Data and Files
10.2	Updating the OpenVMS Operating System
10.2.1	Rolling Upgrades
10.3	LAN Network Failure Analysis
10.4	Recording Configuration Data
10.4.1	Record Information
10.4.2	Satellite Network Data
10.5	Cross-Architecture Satellite Booting
10.5.1	Sample Configurations
10.5.2	Usage Notes
10.5.3	Configuring DECnet
10.6	Controlling OPCOM Messages
10.6.1	Overriding OPCOM Defaults
10.6.2	Example
10.7	Shutting Down a Cluster
10.7.1	Removing a Computer
10.7.2	Cluster Shutdown
10.7.3	Rebooting
10.7.4	Saving AUTOGEN Feedback
10.8	Dump Files
10.8.1	Controlling Size and Creation
10.8.2	Sharing Dump Files
10.9	Maintaining the Integrity of OpenVMS Cluster Membership
10.9.1	Cluster Group Data
10.9.2	Example
10.10	Adjusting Maximum Packet Size for Ethernet and FDDI Configurations
10.10.1	System Parameter Settings for Ethernet and FDDI
10.10.2	Increasing Packet Size
10.10.3	Reducing Packet Size
10.10.4	Editing Parameter Files
10.11	Determining Process Quotas
10.11.1	Quota Values
10.11.2	PQL Parameters
10.11.3	Examples
10.12	Restoring Cluster Quorum
10.12.1	Restoring Votes
10.12.2	Reducing Cluster Quorum Value
10.13	Cluster Performance
10.13.1	Using the SHOW Commands
10.13.2	Using the Monitor Utility
10.13.3	Using DECamds
10.13.4	Monitoring LAN Activity
Appendix A
Appendix A	Cluster System Parameters
A.1	Values for Alpha and VAX Computers
Appendix B
Appendix B	Building Common Files
B.1	Building a Common SYSUAF.DAT File
B.2	Merging RIGHTSLIST.DAT Files
Appendix C
Appendix C	Cluster Troubleshooting
C.1	Diagnosing Computer Failures
C.1.1	Preliminary Checklist
C.1.2	Sequence of Booting Events
C.2	Computer on the CI Fails to Boot
C.3	Satellite Fails to Boot
C.3.1	Displaying Connection Messages
C.3.2	General OpenVMS Cluster Satellite-Boot Troubleshooting
C.3.3	MOP Server Troubleshooting
C.3.4	Disk Server Troubleshooting
C.3.5	Satellite Booting Troubleshooting
C.3.6	Alpha Booting Messages (Alpha Only)
C.4	Computer Fails to Join the Cluster
C.4.1	Verifying OpenVMS Cluster Software Load
C.4.2	Verifying Boot Disk and Root
C.4.3	Verifying SCSNODE and SCSSYSTEMID Parameters
C.4.4	Verifying Cluster Security Information
C.5	Startup Procedures Fail to Complete
C.6	Diagnosing LAN Component Failures
C.7	Diagnosing Cluster Hangs
C.7.1	Cluster Quorum is Lost
C.7.2	Inaccessible Cluster Resource
C.8	Diagnosing CLUEXIT Bugchecks
C.8.1	Conditions Causing Bugchecks
C.9	Diagnosing Port Communication Problems
C.9.1	Port Polling
C.9.2	LAN Communications
C.9.3	System Communications Services (SCS) Connections
C.10	Port Failures
C.10.1	Hierarchy of Communication Paths
C.10.2	Where Failures Occur
C.10.3	Verifying CI Port Functions
C.10.4	Verifying Virtual Circuits
C.10.5	Verifying CI Cable Connections
C.10.6	Diagnosing CI Cabling Problems
C.10.7	Repairing CI Cables
C.10.8	Verifying LAN Connections
C.11	Analyzing Error-Log Entries for Port Devices
C.11.1	Examine the Error Log
C.11.2	Formats
C.11.3	CI Device-Attention Entries
C.11.4	Error Recovery
C.11.5	LAN Device-Attention Entries
C.11.6	Logged Message Entries
C.11.7	Error-Log Entry Descriptions
C.12	OPA0 Error-Message Logging and Broadcasting
C.12.1	OPA0 Error Messages
C.12.2	CI Port Recovery

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