Sun Microsystems StorEdge, Troubleshooting Manual

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Appendix B Brocade Communications Systems Switch Troubleshooting 101
General Troubleshooting Procedures
This section lists the broad steps on how to approach a Brocade Silkworm switch
problem in a SAN environment. It lays out a methodical approach and lists various
tools and resources available at each step. It is expected that using Storage
Automated Diagnostic Environment version 2.1 for monitoring will greatly reduce
the time consuming process of narrowing down the problem.
1. Discover the Error.
■
Storage Automated Diagnostic Environment version 2.1 messages and alerts
■
/var/adm/messages
■
Application-specific errors
2. Determine the extent of problem.
■
cfgadm -al
output
■
luxadm -e port
output
■
Storage Automated Diagnostic Environment version 2.1 Topology error display
■
Multipathing information (Sun StorEdge Traffic Manager and VxDMP)
Note – The information gathered here will determine which subsection to focus
your attention: Host to Switch, Switch to Switch (cascaded), or Switch to Storage.
3. Check Array Status.
■
Open a telnet session to the Sun StorEdge T3 array
■
Refer to the
luxadm
display output for Sun StorEdge A5200 arrays
■
Raid Manager Healthcheck for the Sun StorEdge A3500FC arrays
■
Storage Automated Diagnostic Environment version 2.1 instrumentation reports
■
LED status
■
Explorer/T3Extractor output
4. Check Switch Status.
■
Explorer output (
supportShow
output)
■
WebTools GUI
■
LED Status
■
Storage Automated Diagnostic Environment version 2.1 instrumentation reports
■
Port Modes (F/L/E, online, offline)
■
Nameserver Information (
nsshow
,
nsallshow
)