Remember, AIX supports mksysb.  So, for it to rebuild everything having the
volume group and logical volume group structure is necessary.  Solaris and
HP-UX are heading away from the traditional raw volumes as well.  With
virtual storage coming raw will be come a thing of the past.

The mainframe had a raw concept as well, but it went to volume grouping
about 10 years ago because of the manageability issues.  It is called System
Managed Storage, aka SMS.  The same will happen with UNIX.  It is just a
matter of time before the IO system of UNIX grows up and raw will be so
undesirable because of the benefits of non-raw you will be glad it is dead.

I agree the simplicity of raw makes it really desirable for things like
workstations, but it will be a thing of the past there as well.  Just time.

Paul D. Seay, Jr.
Technical Specialist
Naptheon Inc.
757-688-8180


-----Original Message-----
From: Suad Musovich [mailto:s.musovich AT AUCKLAND.AC DOT NZ]
Sent: Sunday, October 06, 2002 4:40 PM
To: ADSM-L AT VM.MARIST DOT EDU
Subject: Re: AIX/Shark raw volume problem


On Mon, 2002-10-07 at 03:34, David Longo wrote:
> If I understood your note correctly, you still have to put the disk in
> a volume group, then create Raw LV's on that disk as opposed to
> Fielsystems.

Thats what I was afraid of. Adding another layer of complexity and overhead.

Why can't AIX allow the use of the raw devices?
<sigh>

Suad
--

> David Longo
>
> >>> s.musovich AT AUCKLAND.AC DOT NZ 10/05/02 07:25AM >>>
> I decided to try using raw disk for database volumes, so I allocated
> some 10GB LUNs off our Shark.
>
> The problem is when I define them in TSM, they come up as 128MB
> volumes (used both the rvpath and rhdisk devices).
>
> Is there something I need to do in AIX to get them working?
>
> (I also tested them by putting them in a volume group and they came up
> as 10GB OK)
>
> Suad
> --
>
>
> "MMS <health-first.org>" made the following
>  annotations on 10/06/2002 10:36:06 AM
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