>> The extrbase hook? Or is there a better place?
> Very good idea.
In a different country and a different FAI installation I used this
"hooks/extrbase.DEFAULT" in place of the 'normal' one. The hook assumes
an environment variable ${BASEFILE} or
${DEBOOTSTRAP}/${DEBOOTSTRAP_OPTS} exists and downloads/extracts the
specified basefile.Nonetheless it should suffice as a guideline. I used
this hook to install Debian/Ubuntu/SuSE in 32 or 64bit without relying
on a specific classname.
The mentioned quirks may or may not apply anymore. I wrote this hook
about 3 to 4 years ago.
#! /bin/bash
# Focus:
# - find correct base archive and extract it
# or
# - call debootstrap (debian-style dists only)
# Goal:
# - chroot possible
# - shell available
# I found it necessary to modify the default behaviour, because
# fai has some quirks I don't like.
# - if base.tgz exists then always use it instead of bootstrapping
# - find a valid base image via a class
# this class is used nowhere else and doesn't have
# other uses.
# (- always state a Debian base archive is being extracted)
# - fai barfs on debootstraps exit code 141
# (this still needs a proper analysis)
# defined in $IDENTITYFILE (variables provided through class IDfile)
# $BASEFILE
# $DEBOOTSTRAP
# $DEBOOTSTRAP_OPTS
# final fallback
DefaultBASEFILE="${NFSROOT}/live/filesystem.dir/var/tmp/base.tgz"
## Sanity check
if [[ -z ${BASEFILE} ]] ; then
if [[ -z ${DEBOOTSTRAP} || -z ${DEBOOTSTRAP_OPTS} ]] ; then
echo "WARNING: Neither a base file nor debootstrap options
defined!" >&2
task_error 201
fi
elif ! $(wget --spider -q $BASEFILE) ; then
echo "WARNING: Custom basefile location is set, but basefile can't
be found!" >&2
echo " missing file: $BASEFILE" >&2
task_error 202
fi
# this code is copied from task_extrbase() found in
# <NFSROOT>/usr/lib/fai/subroutines-linux
# changes:
# - don't lie about installing debian
# - if IGNOREBASETGZ is set, the base.tgz is ignored
# - regard debootstraps exit code 141 as valid
echo "Installing basic operating system."
echo "=================================="
# keeps track whether an appropriate base image was found or not
BASEFOUND=0
# use a software repository if it's available
if [[ -n ${BASEFILE} ]] ; then
echo -e " downloading & extracting\n ${BASEFILE}"
if $(wget --progress=dot:mega -O - ${BASEFILE} | tar xz -C
${target}) ; then
BASEFOUND=1
else
task_error 811
fi
elif [ -r ${DefaultBASEFILE} ] ; then
echo " using ${DefaultBASEFILE}"
if $(tar xzf ${DefaultBASEFILE} -C ${target}) ; then
BASEFOUND=1
else
task_error 812
fi
fi
if [[ $BASEFOUND == 0 ]] ; then
if [[ -n ${DEBOOTSTRAP} && -n ${DEBOOTSTRAP_OPTS} ]] ; then
echo "Calling debootstrap."
call_debootstrap $DEBOOTSTRAP $DEBOOTSTRAP_OPTS
RETVAL=$?
[[ $verbose = 1 ]] && echo "debootstrap return value: $RETVAL"
# debootstrap may complete with the following message:
# "I: Base system installed successfully." but the return code
is 141
if [ $RETVAL = 141 ] ; then
RETVAL=0
fi
task_error 801 $RETVAL
else
task_error 802
fi
fi
### remove old fstab file and copy the one from $LOGDIR
fs=$FAI_ROOT/etc/fstab
# now we can copy fstab
[ -f $fs ] && mv $fs $fs.old
[ -f $LOGDIR/fstab ] && cp -p $LOGDIR/fstab $fs
# no need for task_extrbase() anymore, everything's set up
skiptask extrbase
