README


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Hi! This is my super-fancy test script that I use for working on the dracut
module in anaconda. It was never intended for public release so I don't really
care that it's ugly and kind of stupid in places. It gets the job done and
that's good enough for me.

If you're reading this, I hope maybe some of this will be useful to you?

-w

Will Woods <wwoods@redhat.com>

HOW IT WORKS:

Before you start, you should edit testboot.conf and set $dracutdir and $cdrom.

The first time you run testboot.sh, , it will open up the configured CDROM
image and pull out some files:

  vmlinuz
  vmlinuz.kv
  initramfs.img.orig
  initramfs.orig/
  /lib/modules/$(kernel version)/

It then rebuilds the initramfs using the dracut in $dracutdir, and whatever
$dracut_opts you set in testboot.conf. This creates:

  initramfs/

Next, if there is an updates/ directory, its contents are copied into
initramfs/. And then we create:

  initrd.img

which is just a compressed cpio archive of initramfs/.

Finally, we run virt-install, booting the vmlinuz+initrd.img (PXE-style) with
any kernel arguments given on the commandline.

TIPS:

To force a rebuild of the initramfs, 'rm -rf initramfs'.

Remember that the files in 'updates/' are applied to the *initrd*. If you want
to apply updates to the anaconda runtime put them in 'updates/updates'. For
example, adding 'updates/updates/usr/bin/free' would add the 'free' binary to
the anaconda environment.

BUGS:

If you remove something from updates/, it doesn't get removed from initramfs/.