What I didn't realize is that the hostid is apparently written right on the chip
itself! I just received a couple of emails from folks telling me that. Thanks!
That's exactly what I need to make sure the system is using the correct one.
>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,
>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
>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
>>stored elsewhere? (ie, on the i/o boards as well perhaps?) I am talking
>a 4500 machine,
>>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
>>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
>>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
>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
>>information is stored would be greatly appreciated.
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