Fujitsu SPARC Enterprise T5120 Product Notes page 137

After the control domain recovers, a diagnosis is performed. Messages to the console
indicate the cause of the unrecoverable error. For example:
SUNW-MSG-ID: SUN4V-8000-UQ, TYPE: Fault, VER: 1, SEVERITY: Critical
EVENT-TIME: Fri Aug 17 18:00:57 EDT 2007
PLATFORM: SUNW,SPARC-Enterprise-T5220, CSN: -, HOSTNAME: wgs48-100
SOURCE: cpumem-diagnosis, REV: 1.6
EVENT-ID: a8b0eb18-6449-c0a7-cc0f-e230a1d27243
DESC: The number of level 2 cache uncorrectable data errors has exceeded
acceptable levels. Refer to http://sun.com/msg/SUN4V-8000-UQ for more
information.
AUTO-RESPONSE: No automated response.
IMPACT: System performance is likely to be affected.
REC-ACTION: Schedule a repair procedure to replace the affected resource,
the identity of which can be determined using fmdump -v -u <EVENT_ID>.
At this point, the problem might have been encountered. This problem will prevent
future PSH events (for example, new hardware errors, correctable or uncorrectable)
from being transported into the domain and properly diagnosed.
Workaround: After the domain recovers and the diagnosis message is printed to the
Solaris console, reset the service processor as follows:
sc> resetsc -y [ALOM CMT compatibility CLI]
OR
-> reset /SP [ILOM CLI]
Once the SP is restarted and you are able to log in as the admin (which means all
daemons are ready), type the following in the Solaris control domain:
# fmadm unload etm
# fmadm load /usr/platform/sun4v/lib/fm/fmd/plugins/etm.so
Boot Drive May Report "drive type unknown" for
Solaris format Command (CR 6886514)
This issue is resolved with Solaris patch ID 124630-32 or later.
During a period extending from mid-September to early October 2009
(approximately 3 weeks) a patch was preinstalled on some SPARC Enterprise T5120
and T5220 servers, which introduced a latent bug into those systems. The bug is
described as "latent" because it is activated only when the Solaris format command
is used. Otherwise, the bug has no effect on system behavior or performance.
Appendix A Fixed Issues 125