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Re: Fwd: Debian installer: partman-prep

On Wed, Dec 22, 2004 at 06:27:11PM +0100, Cajus Pollmeier wrote:
> Am Mittwoch, 22. Dezember 2004 14:24 schrieb Colin Watson:
> > On Wed, Dec 22, 2004 at 01:40:20PM +0100, Cajus Pollmeier wrote:
> > > I've prepared a partman-prep package which should add support for PPC
> > > PReP boot partitions to the installer. The package has been forked from
> > > partman-palo. Now, short before testing, I'm wondering about the
> > > mechanism which takes care about loading this module.
> > >
> > > I've grep'ed through the complete installer source, but got stuck in
> > > the partman code. So - what do I have to do, that the partman-prep udeb
> > > gets loaded on installation time?
> >
> > Same as partman-newworld: Priority: standard is enough to have it
> > installed automatically. Make sure to use proper Architecture: and
> > XB-Subarchitecture: fields to make sure it's not installed where it's
> > inappropriate, and if necessary an isinstallable file in the control
> > area.
> Ah - thanks for your answer. I didn't set the XB-Subarchitecture field,
> because it wasn't set in the control file. In case of the newworld example,
> I can't find where powermac_newworld comes from. What to do if I only
> want to have this loaded when using the pseries flavor added by me in
> the linux-kernel-di-powerpc's kernel-versions file?

It is from archdetect which comes from the ddetect .udeb. We need to add
support for your hardware there. Can you give us the /proc/cpuinfo of those
machines, so we can identify it properly ? 

In any case partman-prep should be installed on all of the IBM machines : all
prep (even ppcbug i think), IBM chrps and the newer pseries and what not.

> --
> While looking for the way to set the correct subarch, I found that in
> base-installer's postinst, line 438 the CPU variable is filled by:
> CPU=`grep '^cpu[[:space:]]*:' /proc/cpuinfo | cut -d: -f2 | sed 's/^ *//; s/[, ].*//' | tr A-Z a-z`
> The following case doesn't seem to work with more than one CPU. In
> my case CPU contains "power4+ power4+".

Where did you find it ? 

> CPU=`grep '^cpu[[:space:]]*:' /proc/cpuinfo | cut -d: -f2 | sed 's/^ *//; s/[, ].*//; q' | tr A-Z a-z`
> fixes the problem.

archdetect is a C program, which fills a debconf variable, which others only
need to query, and i believe that it is well probable that the above code
should really not be used.


Sven Luther

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