[arch-releng] dual arch CDs [was: A TODO draft for next installation media]

Gerardo Exequiel Pozzi vmlinuz386 at yahoo.com.ar
Thu Feb 18 19:09:51 EST 2010

On 02/18/2010 08:34 PM, Thomas Bächler wrote:
> Am 18.02.2010 21:04, schrieb Dan McGee:
>> On Thu, Feb 18, 2010 at 1:14 PM, Thomas Bächler<thomas at archlinux.org>  wrote:
>>> That would leave us with:
>>> - kernel x86_64
>>> - initrd x86_64
>>> - kernel i686
>>> - initrd i686
>>> - packages core-any
>>> - packages core-i686
>>> - packages core-x86_64
>>> - squashfs base system i686
>>> - maybe overlay-any
>> All 3 of the "packages" things can go in one big directory anyway- the
>> filenames are all unique since we put the architecture in the package
>> filenames. That would make the mounting process a lot less complex as
>> nothing would need to change between what kernel, processor, etc. you
>> are booting up on or want to install. Only the installer would care.
> I would create all those as squashfs images. After that, we can put them
> together for different ISOs, like core-i686, core-x86_64, core-any,
> netinstall-i686, netinstall-x86_64 - all by just modifying the isomounts
> file and (not) putting the appropriate squashfs images to the disc, no
> other remastering necessary.
sounds good, but.... booting x86_64 kernel with i686 userspace, kernel 
modules are invalid, so maybe, should also add squashfs with only kernel 
modules, /lib/modules, whn booting x86_64

For overlay any, yes, but pacman.conf need to be parsed at startup, 
(current pacman does not support $arch in .conf). Since overlay is just 
8KB, is not a space issue, can have for both archs with each pacman.conf.

Another point, maybe can have a script that launch /sbin/init with 
linux32 wrapper, and using init=/the/script at kernel command line.

Gerardo Exequiel Pozzi ( djgera )
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