Upgrading disk drives and DU simultaneously

From: Larry Griffith <larry_at_garfield.wsc.mass.edu>
Date: Thu, 13 Aug 1998 14:55:08 -0400

Dear Managers,

     Next week I'm upgrading my 3000/600 with two 1GB drives running
v4.0B to a 4GB system disk (/,/usr, and swap) and a 9GB user disk
(/usr/local and /usr/users) running 4.0D. All filesystems are AdvFS.
A couple of questions:

i) The 4.0D kit came with a 4.0B (not D) Installation Guide.
Everything else is for 4.0D. Can I safely follow a 4.0B Installation
Guide or am I going to go down in flames halfway through this
procedure because of some difference between 4.0D and 4.0B ?

ii) My poor 64MB root partition won't support a update install, but I
really want to preserve my customizations (my full install of 4.0B
left me fixing broken customizations for months afterwards). So I'd
really like to do the disk and OS upgrades together (using a larger
root partition on the new disk), using an update install. Is this a
reasonable procedure:

     A) Full backup to tape of both current disks.
     B) Shutdown
     C) Remove existing user disk (SCSI 3) and replace with new
system disk (which temporarily will have to be SCSI 3 also).
     D) Do a minimal install on new system disk (just to make sure
it's bootable, has a reasonable disklabel, and has valid AdvFS
filesystems; is there an easier way to do this?).
     E) Copy the old system disk (SCSI 0) files/directories to the new
system disk. (I think the best command for doing this is in the
archives somewhere, but anyone can refresh my memory it would be
appreciated.)

     At this point I have to decide whether the new disk will become
SCSI 0 or remain SCSI 3. I think changing to SCSI 0 is easier: change
the links in /etc/fdmns now (hopefully also restoring the original
domain names) and change the switches on the disk at shutdown. I hope
this is the correct decision.

     F) Change the links in /etc/fdmns.
     G) Shutdown.
     H) Switch the new system disk to SCSI 0
     I) Remove the old system disk.
     J) Install the new user disk as SCSI 3.
     H) Boot from the 4.0D CD-ROM and do an update install.
     I) Restore the user disk from tape.

Any comments?

                                                Larry

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Larry Griffith Dept. of Computer & Info Science
larry_at_garfield.wsc.mass.edu Westfield State College
(413) 572-5294 Westfield, MA 01086 USA
PGP public key available at: http://garfield.wsc.mass.edu/dcis/griffith.html
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Received on Thu Aug 13 1998 - 18:56:07 NZST

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