The Oracle Solaris Predictive Self-Healing (PSH) fault manager daemon (fmd) can become non-operational when the Logical Domains Manager (ldmd) is down for a period of time. On SPARC T5 series servers, I/O faults, including disk faults, are diagnosed by the Oracle Solaris fmd. Other faults are diagnosed by Oracle ILOM on the SP, and are not affected by this bug.
As soon as a patch with the fix becomes available, you should install the patch. See Obtain Patches.
Workaround: If you suspect that I/O faults are not being reported, execute these steps:
Determine whether or not the ldmd is online.
If ldmd is online, then this bug is not the issue. Refer to the fault management procedures in the service manual.
If ldmd is offline, go to Step 2.
Restart ldmd.
Restart fmd.
An I/O fault might have occurred, but the fault was not diagnosed by PSH. View the system logs, as described in the service manual, to isolate the problem.