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10-15-2001 11:00 AM
10-15-2001 11:00 AM
TOC a system (how to?)
Thanks,
..JOe
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10-15-2001 11:06 AM
10-15-2001 11:06 AM
Re: TOC a system (how to?)
then in gsp (control-b from console) (login if you have to),
then enter "RS" and then a "Y" when it prompts you.
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10-15-2001 11:08 AM
10-15-2001 11:08 AM
Re: TOC a system (how to?)
-Santosh
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10-15-2001 11:08 AM
10-15-2001 11:08 AM
Re: TOC a system (how to?)
Some systems will have a button on the rear of the system, that when pushed, will TOC the system.
Here's a good document for you from the TKB:
How do I force a dump on my system?
DocId: KBRC00003780
Updated:10/19/00 12:14:00 PM
PROBLEM
I need to know the procedure to force a dump on a D, K, and N-class system.
RESOLUTION
The procedure to force a dump on these boxes the procedure are
generally the same. You can use a Transfer of Control (TOC) to
test the saving of a crash dump. To protect the user file
systems, shutdown to single user mode, and be sure that all file
systems (except root) are un-mounted.
To do a TOC on a K-Class server:
1. Turn the keyswitch to 'service'.
2. CTRL B
3. CM> tc
Generally your choices are the following:
- Press the TOC button on the Core I/O Board or on rear of CPU
- Set SERVICE/NORMAL switch on AP card to SERVICE position.
At console: press Ctrl-b; at CM> type TC
The D-class has a TOC button on the back (bottom of core I/O board).
The K-Class has a Key that needs to be turned to "Service Mode",
however the the D-class does not.
If the system has a graphics console, it may have a button on the back.
ALT KEYWORDS
transfer of control force dump crash
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10-15-2001 11:17 AM
10-15-2001 11:17 AM
Re: TOC a system (how to?)
Please advise.
Thanks,
..Joe
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10-15-2001 01:10 PM
10-15-2001 01:10 PM
Re: TOC a system (how to?)
If you are asked to a TOC, you are not supposed to bring down any of the processes. You need dump the system image as it is. Just go the console,hit control-b and then do a "tc". This is going to dump the core and will produce crash. You need to either run Q4 or pass the crash dump onto HP for analysis.
"rs" will simply reset the system.
-Sri
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10-15-2001 01:15 PM
10-15-2001 01:15 PM
Re: TOC a system (how to?)
If this is the case as it is only for testing, you can bring down the application, unmount all the application file systems (even you can get into single user mode) and then do ctrl-b and tc.
I don't believe doing a TOC will update the stable storage (??).
-Sri
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10-15-2001 01:30 PM
10-15-2001 01:30 PM
Re: TOC a system (how to?)
Let's get something straight here..............
An RS will reboot the system and WILL INITIALIZE THE RAM, thus destroying everything (including the reason that the system hung). This is the *normal* way to boot the system.
A TC (or TOC also known as a Transfer of CONTROL) WILL LEAVE THE CONTENTS OF RAM INTACT. This method of booting the system is used when you need to DUMP the contents of RAM to tape or a disc drive for analysis by HP.
If the system has hung and HP wants you to do a TC so a dump of the RAM can be made and analyzed, do EXACTLY that. To do a shutdown, reboot or init will alter the contents of RAM and make HP's job of analysis impossible.
BTW, Patrick has it dead on. I'm just clarifying RS, TC and what each does and when to use it.
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10-15-2001 01:45 PM
10-15-2001 01:45 PM
Re: TOC a system (how to?)
Only part that didn't make sense is "updates the stable storage correctly" as told by HP in Joe's message.
I guess HP is trying to see if the crash dump configuration is working properly or not. We don't need to screw up the system/application just to test the crash dump.
-Sri
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10-24-2001 02:46 AM
10-24-2001 02:46 AM
Re: TOC a system (how to?)
Reconfig Reset!
very nice.
You can TOC either with the push buttons, or the tc command.
Usually during 'normal' use a tc is used to force a crash dump so you can figure out which process is hanging your system.
man boot / pdc / isl for more on boot seq..