is my server dead?

[Liadi]

I think I just had a terrible mistake.
I wanted to down grade scsi patch to fit emulex recommendation. I swremoved PHKL_24004 and intended to install PHKL_21989 but my server won't come up!!! it stuck in an infinite loop at startup. I can't even start it on single mode. is there any way to revive it?

[Bernhard Mueller]

Hi,

it is usually not a good idea to try to remove a kernel patch. If you wish to do so and typically even before you add patches that require a kernel rebuild you should create an ignite recovery tape.

See here:
http://www.software.hp.com/products/IUX/index.html

Now it seems you Kernel is bad, so you have to boot from the (hopefully good) old kernel

interrupt boot at BCH
bo pri
y -> got to ISL
ISL> hpux /stand/vmunix.prev
# cd /stand/build
# /usr/lbin/sysadm/system_prep -v -k /stand/vmunix.prev -s system
# /usr/sbin/mk_kernel -v -s system
# mv /stand/build/system /stand/system
# cd /
# kmupdate /stand/build/vmunix_test
# shutdown -r -y 0

If that does not help, then your old kernel is already bad and you will have to re-install (if you do not have a recovery tape).

Regards,
Bernhard

[John Payne_2]

Boot from the backup kernel. (If you have it.) Get to the BCH, interrupt the boot, type boot, 'y' for interacting, then at the isl prompt, type 'hpux /stand/vmunix.prev' or 'hpux -is /stand/vmunix.prev' if you want single user mode.

I am assuming here that you have a previous kernel saved.

Hope it helps

John

[Liadi]

Thanks for the quick response.
first of all the server is booting from vmunix.prev which is grate, but I did exactly as Bernahrd wrote and it still won't come up at /stand/vmunix.
Is there anything else I should do?

[Jean-Louis Phelix · Accepted solution]

Hi,

After booting on vmunix.prev, you should rather reinstall the patch or even a more recent one, then it will work. I'm surprised that Emulex recommends a 2 years old patch ...

Regards.

[Liadi]

thanks guys. I reinstalled the patch and everything's alright.