Primary root disk replacement on 11.11

[ani007]

Hi,
HP suggest us to replace the root disk.HPCE told us that he will do it online.This is our primary root disk mirror with alternet disk.

OS- B.11.11
$ model
9000/800/S16K-A
$
Could you please let me know what should be done from unix end.

Regards,

[Torsten.]

I'm pretty sure your HP CE knows what to do ...


However, see

When_Good_Disks_Go_Bad_WP
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c01911837/c01911837.pdf

[ani007]

i want to know from unix side ...like the following i did for alt root disk replacement

pvchange -a n /dev/dsk/c2t0d0
replace new the disk
ioscan -fnC disk
insf -C disk
vgcfgrestore -n vg00 /dev/rdsk/c2t0d0
mkboot -l /dev/rdsk/c2t0d0
mkboot -a "hpux -lq" /dev/rdsk/c2t0d0
pvchange -a y /dev/dsk/c2t0d0
vgsync vg00
lvlnboot -R
lvlnboot -v

so shall i follow the above procedure for primary root disk replacement also?

[Torsten. · Accepted solution]

There is no difference between primary and alternate.

[Hakki Aydin Ucar]

if you have a mirror root disk ,you r insured to not lost data. If you have a ignite backup you do not have to worry about OS data.

[P Arumugavel]

Yes, you can proceed with your steps.

If any ambiguity, please refer the attachmnet.

Rgds...

[ani007]

Hi all,
Thank you for your quick reply.
Arumugavel,

why you use
pvcreate â B /dev/rdsk/cxtxdx is it really require?????

â ¢ # vi /stand/bootconf
â ¢ l /dev/dsk/c2t15d0
â ¢ /dev/rdsk/c1t15d0

â ¢ Reboot the box with primary boot disk.

in my above steps i hv not mention these..is it really require? Torson told that my steps are ok..then ...

[P Arumugavel]

Normally document would say you that pvcreate -B is not required. But in practcally I wont say it works, and I never did it also. I prefer to do manual mirror only.

You may get message that that pv is already recorded in lvmtab.

pvcreate -B creates area on disk for a LIF volume, boot utilities, and a BDRA.

Here vgcfgrestore will do restoring of LVM information,and bootprogram by mkboot command.

But I am not sure that vgcfgrestore does it that restoring BDRA also.

Rgds...