KERNEL PANIC !!!!!!!!!!!

[PSS SYS ADMIN]

Ahhhhhhhhrgh!
after a kernel rebuild my system goes in "panic: failed to allocate memory for buffer cache"
The problem is that the system could not boot with the /stand/vmunix.prev also!

HELP ME, PLEASE!

[Paula J Frazer-Campbell]

Dig out your make recovery (ignite tape - You do have one I presume and boot from that.

Vmuunix.prev should work thoug - do you see any memory errors on boot up?

Paula

[Paula J Frazer-Campbell]

Dig out your make recovery (ignite tape) - You do have one I presume and boot from that.

Vmuunix.prev should work though !!!!

- do you see any memory errors on boot up?

Paula

[PSS SYS ADMIN]

both vmunix and vmunix.prev did not work and I don't know why!

I have no make revory!

[PSS SYS ADMIN]

both vmunix and vmunix.prev did not work and I don't know why!

I have no make recovery but I have a twin system with identical hw & sw.
Do you think I can copy the kernel from it?

[Shannon Petry]

Your last booted kernel before the bad one was renamed to vmunix.prev after the new kernel was built. Unless you booted and deleted it it should still be there.

What errors does the old kernel give when you try to boot it?
What command are you giving from ISL to boot the old kernel?
What command EXACTLY is used to boot the current kernel from ISL default?

As for the new kernel, sounds like a typo or a value past physical limits in the buffer cash causing it to try and overallocate memory. This is why I said in your other thread I'd give no advice without the specifics of your system!

Kernels are tightly intwined with the resources on the system, and should not be modified unless you have you have 1) knowledge of the Kernel 2) knowledge of the system.

Regards,
Shannon

[Sandip Ghosh]

If you are having the identical system then create a make_recovery tape on that system (not full vg00) and restore that on this system. During recovery just put the correct IP add and host name.

Sandip

[PSS SYS ADMIN]

If use the make_tape_recovery of the twin system can I restore only the kernel?
And the vmunix it will go under the crashed system?

[Shannon Petry]

Nope, if you read the man page for make_recovery it makes a system image. If you use the tape it will overwrite your file system and all configuraiton files with the make_recovery image. You can NOT restore vmunix.

Regards,
Shannon

[S.K. Chan · Accepted solution]

You may want to consider booting up from the Support Media and then rebuild your kernel. I have not done this before but the steps are here .. (DOCID=OZBEKBRC00000582)
http://www2.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000063236538
Hope this helps ..

[PSS SYS ADMIN]

I'm trying to boot from cd to recover the installation of the hpux.
During the recovery process at the point 4. I have this error:
ERROR : map_root_lv is not supported under this release of HP-UX
ERROR: not init and not in test mode

[S.K. Chan]

You sure you got the correct Install/Support CD ? Do you have another CD of either a later or earlier release. Try using that instead.

[PSS SYS ADMIN]

Thank you,
your document and your tip on the hpux install cd version help me to resume the host.

Regards...
PSS