Error Messages And Logs; Sun Storedge T3 Array Generated Messages; Host-Generated Message - Sun Microsystems StorEdge T3 Service Manual

The interruption of data can happen anywhere on the storage network. This manual
addresses data interruption problems from the output of the host to the Sun Sun
StorEdge T3 and T3+ array, and to the individual components in the array.
1.2

Error Messages and Logs

Both the Sun StorEdge T3 and T3+ array and the host server create log message files
of system conditions and events. These log files are the most useful immediate tools
for troubleshooting.
1.2.1

Sun StorEdge T3 Array Generated Messages

A syslog daemon in the Sun StorEdge T3 and T3+ array writes system error
message logs to a location determined by the site system administrator. Consult with
the site system administrator to obtain access to this log. See Section 2.6, "Setting Up
Remote Logging" on page 2-10 to set up this service.
1.2.2

Host-Generated Message

A syslog daemon in the host hardware writes system error message logs to
/var/adm/messages.
The data host sees a array as one or two logical volumes. A host-generated message
indicates that the host cannot communicate with the array through the Fibre
Channel-Arbitrated Loop (FC-AL) channel, or that an excessive number of channel
errors are occurring. If the host loses access to the array through the channel
connection, then any host messages regarding the array will refer only to the LUNs.
To see details of problems internal to the Sun StorEdge T3 and T3+ array, use the
telnet command to connect to the array and run the fru stat command.
In a partner group configuration where alternate pathing failover has been
established, the failure of a channel path or array controller causes the host to
redirect I/O from the failed channel to the second FC-AL connection.
1-2 Sun StorEdge T3 and T3+ Array Field Service Manual • September 2001