mysterious reboot

From: Stanley, Jon (Jon.Stanley@savvis.net)
Date: Tue Apr 27 2004 - 11:40:42 EDT


I've got a 220R that mysteriously rebooted. In looking for clues from
resets without logs, I've often found the output of prtconf -pv to be
helpful - particularly the 'reset-reason'. On this system, the
reset-reason is listed as B-POR. I've never heard of that before -
S-POR, POR, and FATAL are known to me - just not B-POR.

Any assistance (or other places to look) would be appreciated. Here's
the top relevant output from prtconf and then prtdiag.

<hostname>:~$ prtconf -pv | head -20
System Configuration: Sun Microsystems sun4u
Memory size: 1024 Megabytes
System Peripherals (PROM Nodes):

Node 0xf0029828
    boot-retained-page:
    idprom:
01800800.20e5edfc.00000000.e5edfca9.00000000.00000000.00000000.00000000
    reset-reason: 'B-POR'
    interrupt-map:
0000003c.00000000.00000000.f005ff34.80000033.0000003a.00000000.00000000.
f005ff34.80000034
    interrupt-map-mask: 0000003e.00000000.00000000
    #interrupt-cells: 00000001
    #address-cells: 00000002
    breakpoint-trap: 0000007f
    #size-cells: 00000002
    model: 'SUNW,501-4450'
    name: 'SUNW,Ultra-60'
    clock-frequency: 06b4cb86
    banner-name: 'Sun Enterprise 220R (2 X UltraSPARC-II 450MHz)'
    device_type: 'upa'

Broken Pipe
<hostname>:~$ /usr/platform/sun4u/sbin/prtdiag
System Configuration: Sun Microsystems sun4u Sun Enterprise 220R (2 X
UltraSPARC-II 450MHz)
System clock frequency: 113 MHz
Memory size: 1024 Megabytes

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

                    Run Ecache CPU CPU
Brd CPU Module MHz MB Impl. Mask
--- --- ------- ----- ------ ------ ----
 0 0 0 450 4.0 US-II 10.0
 0 2 2 450 4.0 US-II 10.0

========================= IO Cards =========================

     Bus Freq
Brd Type MHz Slot Name Model
--- ---- ---- ---------- -----------------------------
-------------------
 0 PCI 33 On-Board network-SUNW,hme
 0 PCI 33 On-Board scsi-glm/disk (block)
Symbios,53C875
 0 PCI 33 On-Board scsi-glm/disk (block)
Symbios,53C875
 0 PCI 33 pcib slot 5 fibre-channel-pci10df,1ae5
 0 PCI 33 pcia slot 1 scsi-glm/disk (block)
Symbios,53C875
 0 PCI 33 pcia slot 1 scsi-glm/disk (block)
Symbios,53C875

No failures found in System
===========================

Jon Stanley
Hosting Systems Engineer
SAVVIS Communications
1 SAVVIS Parkway
Town & Country, MO 63017
SAVVIS, The Network That Powers Wall Street(SM)
314-628-7570 (direct)
jon.stanley@savvis.net
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