Sun Microsystems SPARC Enterprise T1000, Руководство администратора

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32 Sun SPARC Enterprise T1000 Server Administration Guide • April 2007
Error Handling Summary
Error handling during the power-on sequence falls into one of the following three
cases:
■
If no errors are detected by POST or OpenBoot Diagnostics, the system attempts
to boot if
auto-boot?
is
true
.
■
If only nonfatal errors are detected by POST or OpenBoot Diagnostics, the system
attempts to boot if
auto-boot?
is
true
and
auto-boot-on-error?
is
true
.
Nonfatal errors include the following:
■
Ethernet interface failure.
■
Serial interface failure.
■
PCI-Express card failure.
■
Memory failure. When a DIMM fails, the firmware unconfigures the entire
logical bank associated with the failed module. Another nonfailing logical
bank must be present in the system for the system to attempt a degraded boot.
Note that certain DIMM failures might not be diagnosable to a single DIMM.
These failures are fatal, and result in both logical banks being unconfigured.
Note – If POST or OpenBoot Diagnostics detect a nonfatal error associated with the
normal boot device, the OpenBoot firmware automatically unconfigures the failed
device and tries the next-in-line boot device, as specified by the
boot-device
configuration variable.
■
If a fatal error is detected by POST or OpenBoot Diagnostics, the system does not
boot regardless of the settings of
auto-boot?
or
auto-boot-on-error?
. Fatal
nonrecoverable errors include the following:
■
Any CPU failed
■
All logical memory banks failed
■
Flash RAM cyclical redundancy check (CRC) failure
■
Critical field-replaceable unit (FRU) PROM configuration data failure
■
Critical system configuration SEEPROM read failure
■
Critical application-specific integrated circuit (ASIC) failure
For more information about troubleshooting fatal errors, refer to the service manual
for your server.
Reset Scenarios
Three ALOM CMT configuration variables,
diag_mode
,
diag_level
, and
diag_trigger
, control whether the system runs firmware diagnostics in response
to system reset events.