Re: Possibly a bit OT: Sun servers panic during boot, then reboot continously...

From: Daniel (kertby_at_yahoo.com)
Date: 01/07/05 

Date: 7 Jan 2005 00:20:12 -0800

Hi Jim,

Try the following,

1. First of all, REMOVE the graphic cards. I'ts much easier debugging
the servers through the serial port.

2. Connect a PC to the serial port and make sure you can scroll back in
your console window.

3. When the system enters the OK-prompt (OBP/Open Boot Prompt) send a
break, if system has auto-boot? set to 'true'. Now, do a 'boot (disk)
-v', where disk is your boot-device (see 'printenv boot-device)

4. When booting the system, you will be able to grab the error messages
followed by the panic. Try to post that information here for further
troubleshooting....

Have you altered the systems in any way, removed SAN-storage etc...?

Things to do after moving a system if it doesn't start properly:
reinsert PCI-cards, reinsert memory modules, make sure all disks are
seated properly, make sure ALL cables are plugged in.

Regards,
Daniel

ohaya wrote:
> [I had originally posted this in comp.sys.sun.hardware, but noticed
that
> there's much traffic there. I think that this post may be a little
> off-topic here, but I'm hoping someone can help. Sorry. Jim]
>
>
> Hi,
>
> Some of our guys moved/re-racked a number of Sun server (8 of them).
> These were a mix of "150" and 3 "280" servers (no video cards), I
> think. All 8 machines were working properly before the move and were
> "init 5" before powering down.
>
> After cabling everything together, two of the 280 servers did not
seem
> to be responding, so we connected a serial cable and did a "tip
> hardwire".
>
> What we saw was that these machines seemed to be booting, and then
would
> panic during the boot process, and then reboot.
>
> We pulled a video card out of another (not one of the 8) Sun server,
and
> put it into one of the 280 servers, thinking that we could try to get
it
> to an OK prompt and then "setenv" so that it would display to the
video,
> and then hopefully get to a login and do an fsck.
>
> After numerous attempts, after that, "tip" seemed to stop working (no
> output), so out of desparation, I went and got a monitor and plugged
it
> into the video card. I was kind of surprised that it looks like the
> reason we weren't getting any output from "tip" was that the server
> must've detected the video card and started outputing to it instead
of
> to the serial port.
>
> Anyway, we were then able to get to the OK prompt by pressing STOP-A,
> but when we try any kind of boot ("boot cdrom", "boot -s", etc.), it
> just keeps doing the same thing, going through the startup boot
> sequence, panic, then reboot. It never gives us a chance to login.
>
> I'm kind of new to Sun hardware, so I'm kind of lost here.
>
> Can anyone tell me what might be happening? Also, what can we do
about
> this?
>
> These two machines are test servers, so we can, albeit somewhat
> painfully, reconstruct them, but at this point, we can't get them to
a
> point where we can do anything with them.
>
> Thanks in advance,
> Jim

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