On rare occasions, the Solaris OS might fail to reboot successfully following a panic caused by a SPARC processor queue array parity error (QRAP).
This issue is present if mreg-uc ereports with the error-condition field is set to QRAP.
From the fault management shell, type:
fmdump -eV
2015-10-14/09:11:42
ereport.cpu.generic-sparc.mreg-uc@/SYS/CMIOU15/CM/CMP/SCC7/CORE3
__tod-0 = 0x561e7ead
__tod-1 = 0x1cee5cc0
tstate = 0x4400000402
htstate = 0x4
ehdl = 0x1fdc100000000007
tpc = 0x60000f022fac
tl = 0x1
tt = 0x29
diagnose = 0x1
error-condition = QRAP
reported-by = Hypervisor
ps-pesr = 0x600
ps-res-err-qhead = 0x0
ps-res-err-qtail = 0x0
ps-nres-err-qhead = 0x0
ps-nres-err-qtail = 0x0
ps-cpu-mondo-qhead = 0x0
ps-cpu-mondo-qtail = 0x800000000011b340
ps-dev-mondo-qhead = 0x0
ps-dev-mondo-qtail = 0x0
In addition, output from the fmadm faulty command indicates that a core has been disabled by the fault management software:
-> fmadm faulty
------------------- ------------------------------------ ----------------------
Time UUID msgid Severity
------------------- ------------------------------------ ----------------------
2015-11-13/05:59:06 ad7bc3bf-c0d7-657b-89e2-cc68f888c312 SPSUN4V-8000-AC Critical
Problem Status : open
Diag Engine : fdd 1.0
System
Manufacturer : Oracle Corporation
Name : SPARC M7-16
Part_Number : 32863269+3+1
Serial_Number : AK00247538
----------------------------------------
Suspect 1 of 1
Fault class : fault.cpu.generic-sparc.core-uc
Certainty : 100%
Affects : /SYS/CMIOU15/CM/CMP/SCC7/CORE3
Status : faulted
FRU
Status : faulty
Location : /SYS/CMIOU15
Manufacturer : Oracle Corporation
Name : CMIOU Module
Part_Number : 7090830
Revision : 04
Serial_Number : 465769T+14426C01MU
Chassis
Manufacturer : Oracle Corporation
Name : SPARC M7-16
Part_Number : 32863269+3+1
Serial_Number : AK00247538
Description : This core has encountered an uncorrectable error.
Response : The fault manager will attempt to remove all strands
associated with this resource from service.
Impact : System performance may be affected.
Action : Use 'fmadm faulty' to provide a more detailed view of this
event. Please refer to the associated reference document at
http://support.oracle.com/msg/SPSUN4V-8000-AC for the latest
service procedures and policies regarding this diagnosis.
Recovery
From ILOM, stop and then start the affected host. For example:
-> stop /HOST2 -> start /HOST2