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64 Sun StorEdge 3900 and 6900 Series 2.0 Troubleshooting Guide • March 2003
Sun Proprietary/Confidential: Internal Use Only
CODE EXAMPLE 5-8 Failed Path Marked Unusable
FRU Tests Available for the A4 or B4 FC Link
Segment
■ The switchtest can only be run from the Storage Service Processor.
■ The linktest can isolate the switch and the GBIC on the switch. It cannot
isolate the cable or the Sun StorEdge T3+ array controller.
▼ To Isolate the A4 or B4 FC Link
To isolate the A4 or B4 link, which is the FC link from the switch to the Sun StorEdge
T3+ array, follow these steps.
1. Quiesce the I/O on the A4 or B4 FC link path.
2. Run linktest(1M) from the Storage Automated Diagnostic Environment GUI to
isolate suspected failing components.
Alternatively, follow these steps:
1. Quiesce the I/O on the A4 or B4 FC link path.
2. Run switchtest(1M) to test the entire link (re-create the problem).
3. Break the connection by uncabling the link.
4. Insert the loopback connector in to the switch port.
# cfgadm -al
Ap_Id Type Receptacle Occupant Condition
ac0:bank0 memory connected configured ok
ac0:bank1 memory empty unconfigured unknown
c1 scsi-bus connected configured unknown
c16 scsi-bus connected unconfigured unknown
c18 scsi-bus connected unconfigured unknown
c19 scsi-bus connected unconfigured unknown
c1::dsk/c1t6d0 CD-ROM connected configured unknown
c20 fc-private connected unconfigured unknown
c21 fc-fabric connected configured unknown
c21::50020f2300006355 disk connected configured unusable