Sun SPARC(R) Enterprise M4000/M5000 (OPL) Servers: Server fails to start /Poweron canceled due to missing component

Asset ID:	1-72-2021757.1
Update Date:	2017-11-08
Keywords:

Solution Type Problem Resolution Sure

Solution 2021757.1 : Sun SPARC(R) Enterprise M4000/M5000 (OPL) Servers: Server fails to start /Poweron canceled due to missing component

Applies to:

Sun SPARC Enterprise M5000 Server - Version All Versions to All Versions [Release All Releases]
Sun SPARC Enterprise M4000 Server - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

After a power supply was replaced in an M4000, the system failed to come up.

XSCF> poweron -a
DomainIDs to power on:00
Continue? [y|n] :y
00 :Not powering on :Poweron canceled due to missing component.

XSCF> showboards -a
XSB DID(LSB) Assignment Pwr Conn Conf Test Fault
---- -------- ----------- ---- ---- ---- ------- --------
00-0 00(00) Assigned n n n Unknown Faulted

Changes

Although the replacefru command was not used to replace the power supply, this was corrected and the system still wouldn't come up after a power cycle.

No failures were noted in the showstatus, however, many components were in a deconfigured state, and no components were missing in showhardconf.

We compared the problemmatic showhardconf to that of a known good lab system to verify.

Cause

Note the "Dual" status for the Power_Supply_System variable.

SPARC Enterprise M4000;
+ Serial:BEFXXXXXX; Operator_Panel_Switch:Locked;
+ Power_Supply_System:Dual; SCF-ID:XSCF#0;

Dual power cannot be used on the M4000 using 100 Volts incoming power.

Per the setdualpowerfeed manpage:

Note - The ability to enable and disable dual power feed is
available on M3000/M4000/M5000 servers only. How-
ever, dual power feed mode cannot be used with 100V
power on M4000/M5000 servers.

This state should be "Single" for M4000/M5000 using 100 Volts incoming power.

SPARC Enterprise M4000;
+ Serial:BEFXXXXXXX; Operator_Panel_Switch:Locked;
+ Power_Supply_System:Single; SCF-ID:XSCF#0;

Solution

Use the setdualpowerfeed command to disable the "Dual" option.

XSCF> setdualpowerfeed -s disable

Dual power feed will be disabled the next time the platform is powered on.

You will need to perfrom a power cycle after running the command and verify the problem is resolved.

Once the system is powered back on:

1. Run a showstatus from the XSCF, it should show no errors:

XSCF> showstatus
No failures found in System Initialization.

2. Power on the domain(s):

XSCF> poweron -a
DomainIDs to power on:00
Continue? [y|n] :y

References

<NOTE:1503118.1> - Sun SPARC(R) Enterprise M3000/M4000/M5000 (OPL) Servers: Power Specifications
http://docs.oracle.com/cd/E19580-01/821-2797-10/21ch4p.html XSCF User’s Guide / section 4.4.11 Dual Power Feed Administration

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