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README
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------
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This package contains kernel packages for FAI (Fully Automatic
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Installation). The kernels use a NFS mounted filesystem for the root
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file system (called nfsroot, see also
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/usr/src/linux/Documentation/nfsroot.txt ). The kernel supports both
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boot protocols (BOOTP and DHCP) for getting its network information
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(IP address, netmask, gateway, broadcast address).
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Important note: The driver for the network card must be compiled into
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the kernel. Do not use a kernel module for it. If you
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got several NICs plugged into your box, the first one
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the kernel finds will be used.
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How to build a custom 2.6.X fai kernel
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--------------------------------------
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The fai-kernels package contains a 2.6.X kernel that supports both the
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BOOTP and the DHCP protocol. You must enable one of the protocols by
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adding the kernel parameter ip=bootp or ip=dhcp (see also nfsroot.txt of
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the kernel sources).
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If you need to compile a custom kernel, start with the config file from
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the fai-kernels package.
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# cd linux-source-2.6.16
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# zcat /usr/share/doc/fai-kernels/config-2.6.16.gz >.config
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# make menuconfig
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When you've saved your kernel configuration, build the kernel package
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using:
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make-kpkg --rootcmd fakeroot --append-to-version -fai --revision 2 kernel-image
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This will create the file kernel-image-2.6.16-fai_2_i386.deb,
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which can be used by FAI. Copy this file to /usr/lib/fai/kernel
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and specify it in /etc/fai/make-fai-nfsroot.conf
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KERNELPACKAGE=/usr/lib/fai/kernel/kernel-image-2.6.16-fai_2_i386.deb
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Then you can set up FAI calling fai-setup or rebuild the nfsroot with
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the command make-fai-nfsroot.
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Then you can build a new FAI boot floppy with
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# make-fai-bootfloppy -f /tmp/fai-bootfloppy -d b
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Note:
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Prior to make-kpkg kernel-image, it may be useful to do a
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make-kpkg clean
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if a kernel as already been built in this directory, and its configuration
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has been changed with make menuconfig.
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How to save space on the boot floppy
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------------------------------------
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If you need a smaller kernel image to fit on a floppy disk, you can
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remove some network drivers, that you don't need for booting and
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mounting the nfsroot. If you have a math coprocessor, disable the math
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emulation (nearly 80k). Here's a list for kernel 2.4.24 with the size
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of some drivers.
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20144 8139too.o
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21564 pcnet32.o
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21868 3c505.o
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21932 dl2k.o
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25292 natsemi.o
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34040 3c59x.o
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50187 tulip.o
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55796 tg3.o
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62936 serial.o
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66484 e100.o
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74244 typhoon.o
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84056 e1000.o
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165343 sk98lin.o
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The homepage for FAI is:
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http://www.informatik.uni-koeln.de/fai/
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----------------------------------------------------------------------
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Thomas Lange
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Institut fuer Informatik mailto:lange@informatik.Uni-Koeln.DE
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Universitaet zu Koeln
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Pohligstr. 1 Telefon: +49 221 470 5303
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50969 Koeln Fax : +49 221 470 5317
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1024D/AB9B66FD AEA6 A8C1 BD8E 67C4 8EF6 8BCA DC13 E54E AB9B 66FD
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----------------------------------------------------------------------
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Copyright (c) 2000-2005 Thomas Lange. All rights reserved.
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