topic Re: Making disk bootable in Operating System - HP-UX

Making disk bootable

Mihails Nikitins — Wed, 09 Nov 2005 04:12:48 GMT

Hi.

Problem. One of mirrored root disks is not bootable.

Question. Is it possibe to make it bootable without breaking mirror and recreating physical volume with 'pvcreate -B'.

# lifls -l /dev/rdsk/c2t2d0
volume c2t2d0 data size 29 directory size 1 05/11/02 18:18:37
filename type start size implement created
===============================================================
LABEL BIN 8 8 0 05/11/02 18:18:37

# mkboot -l /dev/rdsk/c2t2d0
There appear to be non-boot logical volumes on this device.
Overwriting them could destroy all the data on this device

Thanks and points in advance for your comments!

Re: Making disk bootable

Arunvijai_4 — Wed, 09 Nov 2005 04:22:53 GMT

Check this thread,

http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=724247
http://forums1.itrc.hp.com/service/forums/questionanswer.do?threadId=775200

-Arun

Re: Making disk bootable

Adisuria Wangsadinata_1 — Wed, 09 Nov 2005 04:24:38 GMT

Hi,

If at the first time, you didnt use '-B' option when you did pvcreate; this mean you need to do re-mirror again from the first step. That means you need to make it bootable by breaking the mirror and recreating physical volume with 'pvcreate -B' again.

Breaking the mirror and recreating physical volume only destroy all the data in the mirror disk. This mean you didnt destroy the data on the primary disk, and this can be done online.

After mirroring process, dont forget to check the LIFS files on the mirror disk and try to test the boot disk by boot on the alternate disk (mirror disk).

Below is the url (docID : LVMKBRC00005103) about 'How to create a Mirrored Boot Disk on PA-RISC System - Cookbook' :

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000080811535

Hope this information can help you.

Cheers,
AW

Re: Making disk bootable

Luk Vandenbussche — Wed, 09 Nov 2005 04:24:57 GMT

Hi,

I don't know which procedure you used.
But perhaps is better to break the mirror

lvreduce -m 0 /dev/vg00/lvolx

and restart the mirroring,
use the script attached

Re: Making disk bootable

Devender Khatana — Wed, 09 Nov 2005 04:26:07 GMT

Hi,

Was it not bottable anytime or has become umbootable now?

If it was not bootable then did you gave

#lvlnboot -R

HTH,
Devender

Re: Making disk bootable

Fred.Wu — Wed, 09 Nov 2005 04:29:07 GMT

pvcreate -B will destroy your data, it's better to re-mirror.

Re: Making disk bootable

RAC_1 — Wed, 09 Nov 2005 04:31:33 GMT

Break the mirror and reduce that pv from vg00. Now repeat all the procedure and mirror again.

Re: Making disk bootable

Borislav Perkov — Wed, 09 Nov 2005 04:34:11 GMT

Hi Mihails,

You can't make it without breaking mirror and recreating physical volume.
mkboot command cames after including the disk in the volume group.

Regards,
Borislav

Re: Making disk bootable

Mihails Nikitins — Wed, 09 Nov 2005 10:10:40 GMT

Thanks for you replies. I don't know about commands used for initializing the problem disk. Probably, '-B' was forgotten. Do you know any method to make sure that '-B' was omitted?

I'll come back with points later.

Re: Making disk bootable

Mihails Nikitins — Thu, 10 Nov 2005 08:51:48 GMT

Thank you.