Chapter 7. Advanced maintenance, troubleshooting, and diagnostics 469
In addition, IBM Dynamic System Analysis (DSA) collects and analyzes system information to
aid in diagnosing system problems. This is a tool that was developed initially for System x
servers. It is available for Linux and Windows, that can, after executed in your server, provide
all the information, in one package, that your IBM Support representative will need to
diagnose a problem. You can find the DSA tools at the following address:
http://www-03.ibm.com/systems/management/dsa.html
7.11.6 AIX
In this section, we discuss commands that are available to help with problem determination in
AIX on a DS5000 storage subsystem. However, Chapter 12, “DS5000 with AIX, PowerVM,
and PowerHA”, in the IBM Midrange System Storage Implementation and Best Practices
Guide, SG24-6363 describes the configuration of AIX in a DS5000 storage subsystem with
the different driver variations.
Check the HBA parameters
Since AIX 5L V5.3, there is a command that displays the Fibre Channel HBA information
(previously, you had to use both the lsattr and lscfg commands). It also displays FC
statistics. The command is fcstat fcs#, where # stands for the fcs number in AIX.
Example 7-16 shows an output for this command.
Example 7-16 fcstat command output
# fcstat fcs0
FIBRE CHANNEL STATISTICS REPORT: fcs0
Device Type: FC Adapter (df1000f9)
Serial Number: 1F6240C38A
Option ROM Version: 02C03974
Firmware Version: C1D3.91X4
World Wide Node Name: 0x20000000C955E566
World Wide Port Name: 0x10000000C955E566
FC-4 TYPES:
Supported: 0x0000010000000000000000000000000000000000000000000000000000000000
Active: 0x0000010000000000000000000000000000000000000000000000000000000000
Class of Service: 3
Port Speed (supported): 2 GBIT
Port Speed (running): 2 GBIT
Port FC ID: 0x070800
Port Type: Fabric
Seconds Since Last Reset: 29971
Transmit Statistics Receive Statistics
------------------- ------------------
Frames: 1403310 1426469
Words: 700178432 697598208
LIP Count: 0
NOS Count: 0
Error Frames: 0
Dumped Frames: 0
Link Failure Count: 2
Loss of Sync Count: 2
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