From Fedora Project Wiki
What's treebuilder?
Treebuilder is the new branch of Lorax which builds Anaconda images that boot like regular Live images. The advantages of this approach are:
- The installer uses much less RAM and starts up much faster than it did in F15
- The initrd is a normal dracut image, so:
- There's a shell in
initrd.img - No more maintaining the ancient, crusty
loadercodebase. yay!
- There's a shell in
initrd.imgis under 20MB, so PPC systems can netboot it
How do I get started?
1. set up an F16 chroot
- this is optional for x86 systems but required for ppc
- see http://sharkcz.livejournal.com/8649.html for detailed directions
- NOTE: you don't need a separate partition for this - just creating a directory named
/f16will work OK
2. yum install pungi fedora-kickstarts (inside the chroot if you're doing that)
3. Install a copy of the treebuilder branch:
git clone git://git.fedorahosted.org/git/lorax cd lorax git checkout treebuilder make sudo make install
4. Grab a kickstart
You can use fedora-install-fedora.ks from the fedora-kickstarts package, or you can use this minimized version if you're not going to build full DVD images:
# Minimal Fedora kickstart - basically just for testing anaconda # ==== REPOS ==== repo --name=fedora --mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=fedora-16&arch=$basearch repo --name=fedora --mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=updates-released-f16&arch=$basearch repo --name=fedora --mirrorlist=http://mirrors.fedoraproject.org/mirrorlist?repo=updates-testing-f16&arch=$basearch # And an extra line in case you have some local changes #repo --name=localrepo --baseurl=file:///srv/pungi/localrepo --cost=1 %packages # core stuff that isn't in @base kernel* dracut* # basic groups @filesystems @base-x # size removals -*-devel -*-src -*javadoc* -xorg-x11-docs -kernel-doc -frysk -*gcj* -kde* %end
Save that as /srv/pungi/anacondatest.ks.
5. Run pungi Here's the script I use:
#!/bin/bash
if [ $(getenforce) == Enforcing ]; then
sudo setenforce 0
echo "turning off SELinux enforcing"
fi
echo "removing /srv/pungi/test, one moment..."
sudo rm -rf /srv/pungi/test
sudo pungi --nosource --nodebuginfo --destdir=/srv/pungi/test
-c /srv/pungi/anacondatest.ks -G -C -B "$@"
Troubleshooting
TODO.
Slow
Treebuilder is slower. The first culprit looks like dracut.
| number | execve |
|---|---|
| 7606 | /bin/egrep |
| 2578 | /bin/cp |
| 1633 | /lib64/ld-linux-x86-64.so.2 |
| 1434 | /usr/bin/ldd |
| 1413 | /bin/ln |
| 1303 | /usr/local/bin/ln |
| 1303 | /usr/bin/ln |
| 1087 | /sbin/modinfo |
The second culprit is not honoring $TMPDIR, and not putting yumroot-$PID and installroot-$PID inside it.
| count | filename |
|---|---|
| 1693845 | * |
| 253387 | $DESTDIR/yumroot/... |
| 79977 | $DESTDIR/installroot/... |
| 44486 | /etc/xattr.conf |
| 41713 | /proc/self/task/31818/attr/fscreate |
| 25919 | /proc/self/task/1070/attr/fscreate |
| 20220 | /usr |
| 19487 | /etc/localtime |
| 18485 | /lib64/libc.so.6 |
| 18294 | /usr/share |
| 18184 | /etc/ld.so.cache |
| 18074 | /etc/ld.so.preload |
| 17213 | /usr/bin/ldd |
| 14471 | /bin/egrep |
| 9861 | /usr/share/locale |
| 9090 | /var/log/dracut.log |
| 9013 | /dev/null |
| 7529 | /sbin/modprobe |
| 6110 | . |