I'm sure LU is always changing, but last I worked with it LU understood 
encapsulation enough to undo it, but not redo it (no great surprise there) so 
your new BE would be just on the disk slices and you'd have to run a 
reencapsulation step once you were happy with the results.  I doubt that will 
ever change since it would require LU to "do" Veritas stuff.

We've used it for OS upgrades (where the unencapsulation is pretty handy since 
we're upgrading the Veritas software as well), but for patching there's too 
much post-patch work that's "hard" (eg. not easily automated).  We just do 
flash archives of the system before patching and offer a restore from that to 
the system owner if there's problems.  Mostly it's less painful to figure out 
the issue and fix it on the application side than to go back (knowing that 
you'll have to move forward on patching eventually anyways).

Cheers,
 - Mike.Myers <at> nwdc.net

> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf
> Of Hudes, Dana
> Sent: Thursday, November 01, 2007 2:40 PM
> To: A Darren Dunham; Veritas-vx@mailman.eng.auburn.edu
> Subject: Re: [Veritas-vx] Remove rootmirror disk to patch solaris os ?
>
> LU and VxVM root encapsulation is something I haven't tried. What you
> definitely lose is the mirror if that's what you're trying to use as
> your alternate BE since Live Upgrade does the duplication of
> your source
> BE itself. I'll have to experiment and see what I find.
>
> =================
> Dana Hudes
> UNIX and Imaging group
> NYC-HRA MIS
> +1 718 510 8586
> Nextel:  172*26*16684
> =================
>
> -----Original Message-----
> From: [EMAIL PROTECTED]
> [mailto:[EMAIL PROTECTED] On Behalf
> Of A Darren
> Dunham
> Sent: Thursday, November 01, 2007 5:24 PM
> To: Veritas-vx@mailman.eng.auburn.edu
> Subject: Re: [Veritas-vx] Remove rootmirror disk to patch solaris os ?
>
> On Thu, Nov 01, 2007 at 03:47:25PM -0400, Hudes, Dana wrote:
> > While you could do a root mirror break-off, I'd rather use Live
> Upgrade
> > with Solaris. That way you build up the new boot
> environment and then
> > boot onto it. If you want to patch, you use LU and the same OS level
> on
> > both sides. Then you patch the inactive boot environment from the
> active
> > BE, then activate the other BE and reboot onto it.
>
> While LU is cool, I didn't think it understood VxVM root encapsulated
> disks in any useful way.
>
> And if the OP doesn't have VxVM root, then this technique isn't
> applicable anyway.
>
> --
> Darren Dunham
> [EMAIL PROTECTED]
> Senior Technical Consultant         TAOS
> http://www.taos.com/
> Got some Dr Pepper?                           San Francisco,
> CA bay area
>          < This line left intentionally blank to confuse you. >
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