Performing Advanced Troubleshooting; Display Fault Diagnostics (Message Buffer) - Oracle SPARC M8 Service Manual

Performing Advanced Troubleshooting

No. LED
6 AC OK LEDs
CMIOU chassis (top; SPARC
M7-16): AC 15 through AC 10
Switch chassis (SPARC M7-16):
AC 9 through AC 6
CMIOU chassis (bottom): AC 5
through AC 0
Related Information
"Front Indicator Panel Controls and LEDs" on page 46
■
"Locate the Server" on page 61
■
Performing Advanced Troubleshooting
If you are unable to diagnose faults using the methods provided in
Faults" on page
Description
Generate and examine diagnostic information.
Examine log files for additional information about the
server.
Generate and examine low-level diagnostic
information generated by POST.

Display Fault Diagnostics (Message Buffer)

Run the dmesg command on the host to check the system buffer for recent diagnostic messages
and then display them.
1. Log in as superuser.
2. Type:
50 SPARC M8 and SPARC M7 Servers Service Manual • September 2017
Icon or Label
35, use any of the following methods to diagnose faults on the server.
Description
These LEDs light only after the SP LED turns green
and indicate these conditions:
■ Off – No AC power is applied to the indicated
power supplies.
■ Green – AC power is applied to the indicated
power supplies.
"Checking for
Links
"Display Fault Diagnostics (Message
Buffer)" on page 50
"View Log Files (Oracle Solaris)" on page 51
"View Log Files (Oracle ILOM)" on page 51
"Checking Server and Component Health With
POST" on page 52