On Wed, Mar 18, 2009 at 10:59 AM, A Darren Dunham <ddun...@taos.com> wrote:

> On Tue, Mar 17, 2009 at 03:51:25PM -0700, Neal Pollack wrote:
> > >Step 3, you'll be presented with the disks to be selected as in
> > >previous releases. So, for example, to select the boot disks on the
> > >Thumper,
> > >select both of them:
> > >
> > >[x] c5t0d0
> > >[x] c4t0d0
> >
> > Why have the controller numbers/mappings changed between Solaris 10
> > and Solaris Nevada?  I just installed Solaris Nevada 110 to see what
> > it would do.  Thank you, and I now understand that to find the disk
> > name, like above c5t0d0 for physical slot 0 on X4500, I can use
> > "cfgadm | grep sata3/0"
>
> > I also now understand that in the installer screens, I can select 2
> > disks and they
> > will become a mirrored root zpool.
> >
>
> > What I do not understand, is that on Solaris Nevada 110,  the x4500
> > Thumper physical
> > disk slots 0 and 1 are labeled as controller 3 and not controller 5.
> > For example;
> >
> > # cfgadm | grep sata3/0
> > sata3/0::dsk/c3t0d0            disk         connected    configured   ok
> > # cfgadm | grep sata3/4
> > sata3/4::dsk/c3t4d0            disk         connected    configured   ok
> > # uname -a
> > SunOS zcube-1 5.11 snv_110 i86pc i386 i86pc
>
> The numberings are not pre-set, and probably have nothing to do with
> Solaris 10 vs Nevada (or ZFS).
>
> Controller numberings are sequential as they are discovered by the OS.
> So different probe order, post-boot hardware installations, or when
> drivers get installed can case the number assigned to be different on
> different machines.
>
> > Of course, that means I shold stay away from all the X4500 and ZFS docs
> if
> > I run Solaris Nevada on an X4500?
>
> Why would that be?  It doesn't claim that there will be a particular
> mapping for a particular X4500.
>
> > Any ideas why the mapping is not matching s10 or the docs?
>
> As far as I read, the docs are giving you an example.  They're not
> declaring that yours will be the same.
>

Just an observation, but it sort of defeats the purpose of buying sun
hardware with sun software if you can't even get a "this is how your drives
will map" out of the deal...

--Tim
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