V490 rebooted automatically without any error messages

Asset ID:	1-72-1964615.1
Update Date:	2018-02-16
Keywords:

Solution Type Problem Resolution Sure

Solution 1964615.1 : V490 rebooted automatically without any error messages

Applies to:

Sun Fire V490 Server - Version All Versions and later
Information in this document applies to any platform.

Symptoms

Server rebooted automatically without showing any error messages in the explorer or RSC console.

Cause

Initial symptom only one CPU/Memory board was present in prtdiag.

========================= CPUs ===============================================

Run E$ CPU CPU
Brd CPU MHz MB Impl. Mask
--- ----- ---- ---- ------- ----
B 1, 17 1350 16.0 US-IV 3.1
B 3, 19 1350 16.0 US-IV 3.1

==========================================================================

The /var/adm/messages prior to the failure show the full CPUs configuration

Jan 24 08:15:19 app039b unix: [ID 270833 kern.info] cpu3: UltraSPARC-IV (portid 3 impl 0x18 ver 0x31 clock 1350 MHz)

Jan 24 08:15:19 app039b unix: [ID 270833 kern.info] cpu0: UltraSPARC-IV (portid 0 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 08:15:19 app039b unix: [ID 721127 kern.info] cpu 0 initialization complete - online
Jan 24 08:15:19 app039b unix: [ID 270833 kern.info] cpu1: UltraSPARC-IV (portid 1 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 08:15:19 app039b unix: [ID 721127 kern.info] cpu 1 initialization complete - online
Jan 24 08:15:19 app039b unix: [ID 270833 kern.info] cpu2: UltraSPARC-IV (portid 2 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 08:15:19 app039b unix: [ID 721127 kern.info] cpu 2 initialization complete - online
Jan 24 08:15:19 app039b unix: [ID 270833 kern.info] cpu16: UltraSPARC-IV (portid 0 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 08:15:19 app039b unix: [ID 721127 kern.info] cpu 16 initialization complete - online
Jan 24 08:15:19 app039b unix: [ID 270833 kern.info] cpu17: UltraSPARC-IV (portid 1 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 08:15:19 app039b unix: [ID 721127 kern.info] cpu 17 initialization complete - online
Jan 24 08:15:19 app039b unix: [ID 270833 kern.info] cpu18: UltraSPARC-IV (portid 2 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 08:15:19 app039b unix: [ID 721127 kern.info] cpu 18 initialization complete - online
Jan 24 08:15:19 app039b unix: [ID 270833 kern.info] cpu19: UltraSPARC-IV (portid 3 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 08:15:19 app039b unix: [ID 721127 kern.info] cpu 19 initialization complete - online

After the failure some of the CPUs are no longer present

Jan 24 16:21:41 app039b unix: [ID 270833 kern.info] cpu3: UltraSPARC-IV (portid 3 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 16:21:41 app039b unix: [ID 270833 kern.info] cpu1: UltraSPARC-IV (portid 1 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 16:21:41 app039b unix: [ID 721127 kern.info] cpu 1 initialization complete - online
Jan 24 16:21:41 app039b unix: [ID 270833 kern.info] cpu17: UltraSPARC-IV (portid 1 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 16:21:41 app039b unix: [ID 721127 kern.info] cpu 17 initialization complete - online
Jan 24 16:21:41 app039b unix: [ID 270833 kern.info] cpu19: UltraSPARC-IV (portid 3 impl 0x18 ver 0x31 clock 1350 MHz)
Jan 24 16:21:41 app039b unix: [ID 721127 kern.info] cpu 19 initialization complete - online

In addition the RSC environment command shows a temperature value 0 for some of the processors

System Temperatures (Celsius):
------------------------------
P0 0 >>>>>>>>>>>>>>>>>>>>>>>>> Slot A
P1 64
P2 0 >>>>>>>>>>>>>>>>>>>>>>>>> Slot A
P3 64
DBP0 28

Solution

Replace the missing CPU/Memory board to resolve the issue.

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