List Archive: gentoo-releng
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I have completed the livecd support for the remaining components
(genkernel, baselayout, and some catalyst changes)
Quick notes on how to get started:
- sync your latest portage tree
- grab the latest catalyst cvs gentoo/src/catalyst
- tag baselayout-22.214.171.124-r4.ebuild stable for your arch, as it has
_necessary_ fixes for livecds, and make sure your livecd-stage1
spec file has it as a dependancy.
- create an arch runscript 'archscript' for your system arch if you're not
on x86. This entails primarily setting up the bootloader portion of
your livecd. Please refer to examples/livecd/runscript/x86-runscript.sh
if you have any questions. The
should be used as your standard 'runscript' setting in your spec files
as it should be totally arch-independant.
- You should base your spec files on the ones available in
- Assuming you have a fairly current standard stage3 build, you can build
an x86 livecd by doing this from the catalyst directory:
./catalyst -f examples/generic/snapshot.spec && ./catalyst -f
examples/livecd/x86/x86-livecd-stage1-20040114.spec && ./catalyst -f
examples/livecd/x86/x86-livecd-stage2-20040114.spec && ./catalyst -f
- Once a livecd stage3 is built, you can take that and simply run mkisofs
on it, or if you're on x86, you cat use x86-isogen.sh provided in
the root of catalyst. You must be within the 'cdroot' directory of
the stage 3 to run it. It will create ../gentoo.iso
- We currently support 3 loop types which the same type must be
passed to the livecd-stage2 and livecd-stage3 spec files in the
* zisofs - Compresses each file in the filesystem. Creates this
filesystem in the /zisofs directory in the root of the
livecd. You must pass 'looptype=zisofs loop=/zisofs'
to the kernel during boot so the initrd knows what to do.
You must also emerge app-misc/zisofs-tools in your system
not on the livecd in order to make use of the mkzftree
utility. A second requirement is to have transparent
decompression extension compiled into your kernel under
'ISO 9660 CDROM file system support', you will get
binfmt errors otherwise during boot, and it will not
work at all.
* normal - Creates a standard non-compressed loop filesystem. It
creates a /livecd.loop file in the root of the livecd.
You must pass 'looptype=normal loop=/livecd.loop' to the
kernel during boot so the initrd knows what to do.
* noloop - Copies the entire filesystem into the root of the cd,
totally uncompressed. You must pass 'looptype=noloop'
to the kernel during boot so the initrd knows what to
* In the future we'll have more options, this should be a good start.
currently zisofs creates the smallest livecds as it is the only one
that uses compression
- 2 new required fields in livecd-stage2 and livecd-stage3
they are discussed above
- create an ebuild for autoconfig (to automatically configure
nics, run dhcpcd, etc). Going to pull the existing script
out of the old livecd, as it seems to work well.
- Azarah to commit baselayout changes I've submitted, I have them
in the -r4 build, but they're not committed to the rc-scripts
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