topic Setting up Mirroring on root disk : system hangs in Operating System - HP-UX

Setting up Mirroring on root disk : system hangs

Mahesh Ganga — Wed, 19 May 2004 12:39:47 GMT

Hi,

I am trying to setup mirroring on my server with 2 internal drives. The OS(11i) is installed on one.

pvcreate and vgextend went ok but "makeboot /dev/dsk/c2t1d0" hangs the entire system. Did anyone see this problem ?

Re: Setting up Mirroring on root disk : system hangs

Sanjay_6 — Wed, 19 May 2004 12:45:29 GMT

Hi,

I think mkboot works with /dev/rdsk. isn't it ?.

Hope this helps.

Regds

Re: Setting up Mirroring on root disk : system hangs

Mahesh Ganga — Wed, 19 May 2004 12:48:07 GMT

Sorry!
This is what I tried:
mkboot -l /dev/rdsk/c2t1d0
and it hangs.

Re: Setting up Mirroring on root disk : system hangs

Geoff Wild — Wed, 19 May 2004 12:52:28 GMT

Correct - rdsk:

mkboot -l /dev/rdsk/c3t6d0

I attached a procedure I ues.

Rgds...Geoff

Re: Setting up Mirroring on root disk : system hangs

Sanjay_6 — Wed, 19 May 2004 13:02:48 GMT

Hi,

Try these two patches,

1.) PHCO_28378
2.) PHCO_27101

And here is the cookbook to create a root mirror,

http://www1.itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000073345589

The itrc doc id is LVMKBRC00005103.

Make sure you are using the correct device file.

Hope this helps.

Regds

Re: Setting up Mirroring on root disk : system hangs

Kyri Pilavakis — Thu, 20 May 2004 01:28:57 GMT

This is what I use and works ok..It's written for my collegues, so it contains a lot of explanations as to why something is done..
See file attached..

Re: Setting up Mirroring on root disk : system hangs

Mahesh Ganga — Thu, 20 May 2004 14:32:19 GMT

Thank you all for the help.

It looks like the disk is bad. We found out that even though 'ioscan' and 'diskinfo' showed good data, the "dd" command did the same thing to the system(the system hung)

$ dd if=/dev/rdsk/c2t1d0 of=/dev/null bs=1024k

Re: Setting up Mirroring on root disk : system hangs

Kyri Pilavakis — Fri, 21 May 2004 00:59:19 GMT

Srikanth,

Thanks for the 5 points !!!! It's my first....

kyris