topic Re: Storage migration using mirror in Operating System - HP-UX

Storage migration using mirror

Vitorxx — Tue, 31 Jan 2012 20:12:12 GMT

Hi Guys,

I have VG01 on my HP-UX 11.11 v1 with 2 disks on 2 different storage) using mirror:

15995 /dev/dsk/c14t0d1 15995 current /dev/dsk/c12t0d1 15995 current

I have to replace one storage(c12t0d1), can I have third disk from new storage in mirror? After that remove the disk from old storage?

I am creating a procedure to complete this task, and I not sure if it is the best away or I am skipping steps , can someone give an idea?

1- Present new disk from new storage

2-   pvcreate /dev/dsk/ cxtxdx
3-   vgextend /dev/vg01 /dev/ cxtxdx
4- lvextend - m 1 /dev/vg01/lvxx /dev/dsk/cxtxdx
5-   lvreduce -m 0 /dev/vg01/lvolxx /dev/dsk/c12t0d1
5-   vgreduce /dev/vgxx /dev/dsk/c12t0d1

I appreciate your help on this.

Thanks.

Re: Storage migration using mirror

Uday_S_Ankolekar — Tue, 31 Jan 2012 21:41:59 GMT

Your approach seems to be correct if you have Mirror/UX installed.

You can also consider pvmove.

Good Luck

-USA

Re: Storage migration using mirror

Patrick Wallek — Tue, 31 Jan 2012 22:01:24 GMT

The 2 things that need to change are in your lvextend and lvreduce commands.

After you extend you will have 2 mirrors, so you need:

4- lvextend - m 2 /dev/vg01/lvxx /dev/dsk/cxtxdx

After you reduce you will still have 1 mirror, so you need:

5- lvreduce -m 1 /dev/vg01/lvolxx /dev/dsk/c12t0d1

Other than that, all looks good.

Re: Storage migration using mirror

Vitorxx — Wed, 01 Feb 2012 00:25:45 GMT

Yes, I have mirror ux installed.

Thank you everyone. I appreciate your attention.