Re: How to upgrade ESS SDD driver after AIX 4.3-to-5.2 migration
From: F. Michael Orr (morr_at_utility.vccs.edu)
Date: 08/11/04
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Date: Wed, 11 Aug 2004 15:41:30 -0400
On Wed, 11 Aug 2004 11:43:52 -0700, Terry Phelps wrote:
> I've been reading IBM web sites and PDF manuals and still can't decide
> on exactly how to upgrade my AIX 4.3.3 machine to AIX 5.2 and have my
> ESS SDD vpath disks visible and working when I'm done.
>
> Has someone done this? Can you comment on my proposed method here?
Yes, I've done this.
> What I think I need to do is this:
>
> 1. Do the migration installation from 4.3.3 to 5. Question: Do I need to
> do anything to my ESS disks BEFORE migrating? Unmount? Vary off volume
> groups? Export volume groups?
Yes to all of the above, prior to upgrade. Uninstall SDD software.
> 2. After the migration, and reboot, I understand that the ESS disks will
> not "be there", since the migration does not upgrade the SDD (subsystem
> device driver) does NOT get upgraded. Question: Is this true?
Yes, the datapath devices will be gone because you deleted the SDD
software; IIRC, that is part of the un-install process. After your
upgrade, install SDD just like the first time. This will get you your
hdisks and vpaths back, though not necessarily with the same numbers; have
a 'lsvpcfg' from before your upgrade to cross-reference your new setup to.
'importvg' the VG(s) one at a time, using one of the hdisk's which
constitute the vpath, then run 'hd2vp' on the VG. That will convert the
VG back to using the vpath's.
>
> 3. Vary off all ESS volume groups, if I shouldn't have done this back in
> step 1.
>
> 4. Remove all the "datapath devices", via: rmdev -dl dpo -R
>
> 5. Uninstall the 4.3 version of the SDD.
>
> 6. Install the 5.2 version of the SDD.
>
> 7. Install the latest PTF of the 5.2 SDD, that they call version
> 1.5.1.3.
>
> 8. Reboot.
>
>
> If you can tell me how to make this procedure more nearly correct, I'd
> greatly appreciate it.
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