Hostid changed itself after reboot

2007-12-25 10:52:00

Lots of folks suggested that I use software or kernel changes to set the hostid

to be what I want it to be. It sounds good, but I'd rather not have to "fudge"

it that way and really get down to the bottom of the problem. Several people

pointed me to www.squirrel.com for help on how to change the hostid. I don't

think I'll use it but it's good to know anyway! Thanks!

What I'm starting to wonder is whether or not the Sun engineer really did

replace the nvram chip after all? Maybe he accidentally put the original one

back in (it was 4am when it happened). We both thought he did it correctly, but

I can't seem to find any other answer. Then again, we don't seem to be having

problems with the battery anymore either, which is why we replaced it to begin

with. ?

Thanks to:

Tim Carlson

Ravi Kuppanna

David Robillard

Bill Armand

Craig Raskin

Steve Turgeon

Rakesh S

Ron Giddings

Mike Salehi

Oliver Hemming

Rob Rheault

My original post...

>I was hoping maybe that someone could help explain to me how a hostid is

obtained when a system

>is booted. I know it is stored on a PROM chip on the clock board, but is that

information

>stored elsewhere? (ie, on the i/o boards as well perhaps?) I am talking about

a 4500 machine,

>Solaris 2.6.

>

>We had a situation here where a machine was rebooted last night and came back

with a different

>hostid! No kidding! I'm not crazy, it really did. I know because I now have

a bunch of

>software licenses that worked yesterday but are invalid today, plus we save

system configuration

>information for all our machines and I checked what it looked like yesterday.

>

>Here's a little history...

>

>The machine is a 4500, with 2 system boards, 3 i/o boards, Solaris 2.6. Two

months ago we had a

>problem when this system crashed and we lost all the nvram settings. Sun

recommended at the

>time that we replace the clock board since that's where the battery is that

holds those

>settings. When we did this, it also changed the hostid since the battery and

chip that holds

>the hostid apparently go hand in hand.

>

>We recovered our nvram settings by copying them from one of the i/o boards,

which from what I'm

>seeing in testing today should have brought the original hostid back onto the

clock board. But

>when we booted the problem system after replacing the clock board, we had a new

hostid and have

>been living with that ever since. After last night's shutdown however, I find

we are back to

>using the original hostid! What am I missing here? I don't really care what

the hostid is, as

>long as it doesn't keep switching on us because of license software.

>

>I spoke with Sun this morning and they are stumped. Any insight into how or

where hostid

>information is stored would be greatly appreciated.

>

>TIA

>Karen

>

S

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