Paul wrote:
Hi Theo
On Saturday 07 April 2007 22:18, Theo Veenker wrote:
I've managed to create a Xenomai Live CD based on the Ubuntu Dapper
desktop install CD. Many webpages tell you how to do it (for instance
https://help.ubuntu.com/community/LiveCDCustomization/6.06) but the
important thing is to have squashfs and unionfs support in the kernel.
The following is what I did.
TODO:
- Remove Ubuntu Installer stuff from CD
- Remove unnecessary packages from the squashfs file system.
- Change isolinux/isolinux.cfg etc.
Having built a number of custom LiveCDs, it is much easier to start from
scratch rather than trying to remove stuff from an existing build. Stripping
down a build often leaves cruft behind...
So you are saying I went through all this ff-ing trouble for nothing?
You have all the knowledge and experience but did't bother putting it
to use for a Xenomai live CD? If it is not too much work maybe you could
put something together. I'm sure many people, including me, would be
interested.
Here it goes (I think/hope I haven't forgotten any steps):
Apply xenomai patches:
Apply squashfs patches:
Apply unionfs patches:
Compile and install kernel. On my particular system this yields (v20 being
my local version number):
/boot/vmlinuz-2.6.17.14-xenomai-v20
/lib/modules/2.6.17.14-xenomai-v20/
If my experiences with Debian/etch is anything to go by, the grub-update
scripts will see "xeno" and tag the vmlinuz as a Xen virtual machine image.
Probably not an issue for a LiveCD, but would be if it were to be used as an
installation target..
Not on my systems. Anyway I didn't say how to do it, I said what I did.
http://www.morphix.org has a set of tools that greatly simplifies the task of
building LiveCDs - mmaker requires a simple XML file listing the main
components to include on the ISO, and isomaker does the grunt behind the
bootable parts. Having deb packages for both the kernel and Xenomai is an
advantage if/when anyone wants to do an install or upgrade.
When unionfs is shown to be stable on a 2.6.20 kernel, it might be worth while
setting up an autobuild system in conjunction with the Morphix project..
[Side note: I already do nightly Sarge based Morphix modules, so slipping in a
Xenomai version once in a while is possible].
Would be nice. I'm very interested in having a (small) live cd which I can
customize and give to my clients.
Regards,
Theo
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