Kernel Not booting

[shashi kanth]

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.

[Ivan Krastev]

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

regards,
ivan

[shashi kanth]

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

[Ivan Krastev]

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

regards,
ivan

[shashi kanth]

RX2660.

The OS is on the local disk.

[Ivan Krastev]

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

regards,
ivan

[shashi kanth]

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

[Don Morris_1]

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?

[Torsten. · Accepted solution]

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)?

[Bill Hassell]

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.

[shashi kanth]

Torsten is correct.

[Torsten.]

Yeah, you are welcome.

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

Have fun!