topic Re: Kernel Not booting in Operating System - HP-UX

Kernel Not booting

shashi kanth — Tue, 16 Sep 2008 09:54:31 GMT

I have on RX box, 11iv3 installed.

When the OS tries to boots, it simply hangs.

Launching /stand/vmunix
SIZE: Text:43838K + Data:6363K + BSS:22494K = Total:72697K

Even i tried to load the kernel which is in the /stand/backup directory, but no luck.

Launching /stand/backup/vmunix
SIZE: Text:39663K + Data:6394K + BSS:19398K = Total:65456K

How can i troubleshoot ? How to solve this situation ?

Thanks.

Re: Kernel Not booting

Ivan Krastev — Tue, 16 Sep 2008 09:57:19 GMT

What errors you have? Can you give us more ingormation ?

regards,
ivan

Re: Kernel Not booting

shashi kanth — Tue, 16 Sep 2008 09:58:08 GMT

The box doesn't throw any error, it simply hangs at that stage.

Re: Kernel Not booting

Ivan Krastev — Tue, 16 Sep 2008 10:07:17 GMT

What is your model - PA-RISC or Integrity server? What is your boot path - from local disk or SAN?

regards,
ivan

Re: Kernel Not booting

shashi kanth — Tue, 16 Sep 2008 10:07:38 GMT

RX2660.

The OS is on the local disk.

Re: Kernel Not booting

Ivan Krastev — Tue, 16 Sep 2008 10:19:17 GMT

Try to boot in fail-safe mode - http://docs.hp.com/en/5992-4607/ch10s17.html

regards,
ivan

Re: Kernel Not booting

shashi kanth — Tue, 16 Sep 2008 10:26:19 GMT

same problem.

HPUX> boot -tm
> System Memory = 2027 MB
loading section 0
...................................................................................... (complete)
loading section 1
............. (complete)
loading symbol table
loading System Directory (boot.sys) to MFS
.....
loading MFSFILES directory (bootfs) to MFS
.x..xx..............x.xx..........x.x.x
Launching /stand/vmunix
SIZE: Text:43838K + Data:6363K + BSS:22494K = Total:72697K

Re: Kernel Not booting

Don Morris_1 — Tue, 16 Sep 2008 13:17:44 GMT

Try:
boot vmunix -v

which will give a listing of each function visited.

Things I can think of that might be going on (based on no data, keep in mind...):

+ Have there been changes to the memory configuration/layout of the box since your last reboot? You may be hitting extremely early boot memory exhaustion.. which usually ends up in a panic, but can take a while to figure itself out in my experience.

+ Much more likely -- it could be taking a very long time to build the early boot I/O tree [figuring out what drivers are needed, though they actually fully load later in boot after you see some other stuff come up]. Check for unterminated drive connections, etc. Does the EFI bringup also take a long time when it scans for boot devices?

Re: Kernel Not booting

Torsten. — Tue, 16 Sep 2008 14:13:39 GMT

Sure it hangs???

I guess you are on the wrong console.

From EFI please run

EFI> conconfig

What do you get?
What console you are using (serial vs. VGA)?

Re: Kernel Not booting

Bill Hassell — Wed, 17 Sep 2008 00:41:49 GMT

Is this box connected to a SAN switch? A mistake in the switch settings or a disk array mistake can cause very long (hours) delays as the fibre cards try sort out the errors, especially with a large number of LUNs. If the boot disk is internal, try booting without the fibre cables connected.

Re: Kernel Not booting

shashi kanth — Wed, 17 Sep 2008 04:44:16 GMT

Torsten is correct.

Re: Kernel Not booting

Torsten. — Wed, 17 Sep 2008 04:47:16 GMT

Yeah, you are welcome.

For this scenario the console setting is the problem in much more than 90%.

Have fun!