Lost vmunix in /stand

[FLQ]

I found this morning that on e of my servers was missing /stand/vmunix.... :-((

What can I do to recover?
Reboot is not an option.

TIA

[Patrick Wallek]

No, a reboot is definitely NOT an option here. You'd really have problems then!

Do you have a recent make_tape_recovery tape? You could restore from that. Otherwise try restoring from whatever your latest backup tape is.

[Helen French]

Hi,

DO NOT reboot the system. If you have a recent good backup of the system, restore vmunix from that. If you have the recovery tape ( make_recovery ), restore it from that.

Normally, the system keeps a backup of the kernel file - /stand/vmunix.prev, before the last kernel change. If you know this is the latest, then you can copy it (you will loose the last kernel changes )


HTH,
Shiju

[Bill McNAMARA_1]

Well, you can hope that the power never goes off and the reboot/shutdown command never works and all will be fine!

On a serious note, just check for any potential kernels in /stand/, and or copy/rcp over a similar system kernel to /stand/

Later,
Bill

[Victor BERRIDGE]

Hi,
Have you still a /stand/system file?
I would try to compile a new kernel using it:
cp - system build/.
cd build
/usr/sbin/mk_kernel -s system
mv vmunix_test /stand/vmunix
etc...

Check you do have a /stand/vmunix.prev or a make_recovery tape before to reboot...

Just thoughts

Good luck
Victor

[Paula J Frazer-Campbell]

Hi

This file did not just get up and leave - someone or somthing did it.

Have a look in all your security logs and look for a:-

rm of this file.
cd into the stand dir.
Stange logins from strange addresses.
Check /.sh_history for the cd and rm in stand.


BTW

Do you have a vmunix.prev ?


Paula