SUMMARY: Upgrade Sparc20/Solaris 2.6 to Ultra60/Solaris 8: Is root ufsdump/ufsrestore necessary?

Hi,

My plan B is working well in practice for this
purpose:
1) ufsdump every file system except root on Sparc20.
2) install Solaris 2.6 on Ultra60.
3) ufsrestore every file system except root of Sparc20
to Ultra60.
4) Selectively transfer /etc files from Sparc20 to
Ultra60. This is the key step.
4) Upgrade Solaris from 2.6 to 8 on Ultra60.

Casper made this point:
You also want to "nuke" /etc/path_to_inst (change the
content to a single line with):
#path_to_inst_bootstrap_1

Most comrades suggested to install a fresh Solaris 8,
then transfer applications and data on the old system
to the new one. I think ?buying a new car? is not the
best answer for the question ?how to rebuild the old
car?. Sorry :)

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Thank list:
"Casper Dik" <Casper.Dik@Sun.COM>
"Colin Bigam" <colin.bigam@west.gecems.com>
joe.fletcher@btconnect.com
"Hendrik Visage" <hvisage@is.co.za>
"Greene, Marco" <Marco.Greene@nexinnovations.com>
"David Foster" <foster@dim.ucsd.edu>
"ChinTu" <cp-sm@mil.sunysb.edu>
"Karl Vogel" <vogelke@pobox.com>
mike.salehi@kodak.com
"Mitchell, John" <John.Mitchell@uk.experian.com>

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Original Question:
> Hello everyone,
> 
> We are now planning to upgrade a production server
> from combination Sparc20/Solaris 2.6 to combination
> Ultra60/Solaris 8. Here are two plans:
> 
> Plan A:
> 1) ufsdump every file system on Sparc20.
> 2) install Solaris 2.6 on Ultra60.
> 3) ufsrestore every file system of Sparc20 to
> Ultra60.
> Some boot and device tree problems will occur and
> must
> be solved in this step during ufsrestore root file
> system.
> 4) Upgrade Solaris from 2.6 to 8 on Ultra60.
> 
> Plan B:
> 1) ufsdump every file system except root on Sparc20.
> 2) install Solaris 2.6 on Ultra60.
> 3) ufsrestore every file system except root of
> Sparc20
> to Ultra60. Copy /etc from Sparc20 to Ultra60.
> 4) Upgrade Solaris from 2.6 to 8 on Ultra60.
> 
> The only difference between Plan A and Plan B is if
> the root file system needs to be ufsdumped and
> ufsrestored from the Sparc20 to the Ultra60. I think
> it is not necessary to ufsdump/ufsrestore the root
> file system from the Spar20 to the Ultra60. Only
> /etc
> needs to be transferred from the old system to the
> new
> system. So, plan B is a better way. Am I right on
> this?
> 
> Any advice/suggestion/comment? Please help!
> 
> Thank you!
> 
> John Lee
> UNIX System Supporter


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