forked from josch/mmdebstrap
199 lines
6.6 KiB
Bash
Executable file
199 lines
6.6 KiB
Bash
Executable file
#!/bin/sh
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set -eu
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mirrordir="./mirror"
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cachedir="./cache"
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# by default, use the mmdebstrap executable in the current directory but allow
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# overwriting the location
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: "${mmdebstrap:=./mmdebstrap}"
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# by default a cache of debootstrap results is maintained
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: "${docache:=true}"
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mirror="http://deb.debian.org/debian"
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rootdir=$(mktemp --directory)
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nativearch=$(dpkg --print-architecture)
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components=main
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abort=no
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for dist in stable testing unstable; do
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if [ -e debian-$dist-mm ]; then
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echo "debian-$dist-mm exists"
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abort=yes
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fi
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if [ -e debian-$dist-debootstrap ]; then
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echo "debian-$dist-debootstrap exists"
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abort=yes
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fi
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done
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if [ $abort = yes ]; then
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exit 1
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fi
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./make_mirror.sh
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cd mirror
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python3 -m http.server 8000 2>/dev/null & pid=$!
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cd -
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# wait for the server to start
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sleep 1
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if ! kill -0 $pid; then
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echo "failed to start http server"
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exit 1
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fi
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trap 'kill $pid' INT QUIT TERM EXIT
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echo "running http server with pid $pid"
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# choose the timestamp of the unstable Release file, so that we get
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# reproducible results for the same mirror timestamp
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export SOURCE_DATE_EPOCH=$(date --date="$(grep-dctrl -s Date -n '' mirror/dists/unstable/Release)" +%s)
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mkdir -p "$cachedir"
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for dist in stable testing unstable; do
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> timings
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> sizes
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for variant in minbase buildd -; do
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# skip because of different userids for apt/systemd
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if [ "$dist" = 'stable' -a "$variant" = '-' ]; then
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continue
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fi
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echo =========================================================
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echo $dist $variant
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echo =========================================================
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echo running $mmdebstrap --variant=$variant --mode=unshare $dist debian-$dist-mm.tar "http://localhost:8000"
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/usr/bin/time --output=timings --append --format=%e $mmdebstrap --variant=$variant --mode=unshare $dist debian-$dist-mm.tar "http://localhost:8000"
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stat --format=%s debian-$dist-mm.tar >> sizes
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mkdir ./debian-$dist-mm
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sudo tar -C ./debian-$dist-mm -xf ./debian-$dist-mm.tar
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if [ "$docache" != "true" ] || [ ! -e "$cachedir/debian-$dist-$variant.tar" ]; then
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echo running debootstrap --merged-usr --variant=$variant $dist ./debian-$dist-debootstrap "http://localhost:8000/"
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/usr/bin/time --output=timings --append --format=%e sudo debootstrap --merged-usr --variant=$variant $dist ./debian-$dist-debootstrap "http://localhost:8000/"
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sudo tar --sort=name --mtime=@$SOURCE_DATE_EPOCH --clamp-mtime --numeric-owner --one-file-system -C ./debian-$dist-debootstrap -c . > "$cachedir/debian-$dist-$variant.tar"
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sudo rm -r ./debian-$dist-debootstrap
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else
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echo cached >> timings
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fi
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stat --format=%s "$cachedir/debian-$dist-$variant.tar" >> sizes
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mkdir ./debian-$dist-debootstrap
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sudo tar -C ./debian-$dist-debootstrap -xf "$cachedir/debian-$dist-$variant.tar"
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# diff cannot compare device nodes, so we use tar to do that for us and then
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# delete the directory
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tar -C ./debian-$dist-debootstrap -cf dev1.tar ./dev
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tar -C ./debian-$dist-mm -cf dev2.tar ./dev
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cmp dev1.tar dev2.tar
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rm dev1.tar dev2.tar
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sudo rm -r ./debian-$dist-debootstrap/dev ./debian-$dist-mm/dev
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# remove downloaded deb packages
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sudo rm debian-$dist-debootstrap/var/cache/apt/archives/*.deb
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# remove aux-cache
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sudo rm debian-$dist-debootstrap/var/cache/ldconfig/aux-cache
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# remove logs
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sudo rm debian-$dist-debootstrap/var/log/dpkg.log \
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debian-$dist-debootstrap/var/log/bootstrap.log \
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debian-$dist-mm/var/log/apt/eipp.log.xz \
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debian-$dist-debootstrap/var/log/alternatives.log
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# remove *-old files
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sudo rm debian-$dist-debootstrap/var/cache/debconf/config.dat-old \
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debian-$dist-mm/var/cache/debconf/config.dat-old
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sudo rm debian-$dist-debootstrap/var/cache/debconf/templates.dat-old \
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debian-$dist-mm/var/cache/debconf/templates.dat-old
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sudo rm debian-$dist-debootstrap/var/lib/dpkg/status-old \
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debian-$dist-mm/var/lib/dpkg/status-old
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# remove dpkg files
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sudo rm debian-$dist-debootstrap/var/lib/dpkg/available \
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debian-$dist-debootstrap/var/lib/dpkg/cmethopt
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# since we installed packages directly from the .deb files, Priorities differ
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# this we first check for equality and then remove the files
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sudo chroot debian-$dist-debootstrap dpkg --list > dpkg1
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sudo chroot debian-$dist-mm dpkg --list > dpkg2
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diff -u dpkg1 dpkg2
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rm dpkg1 dpkg2
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grep -v '^Priority: ' debian-$dist-debootstrap/var/lib/dpkg/status > status1
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grep -v '^Priority: ' debian-$dist-mm/var/lib/dpkg/status > status2
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diff -u status1 status2
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rm status1 status2
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sudo rm debian-$dist-debootstrap/var/lib/dpkg/status debian-$dist-mm/var/lib/dpkg/status
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sudo rmdir debian-$dist-mm/var/lib/apt/lists/auxfiles
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# debootstrap exposes the hosts's kernel version
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sudo rm debian-$dist-debootstrap/etc/apt/apt.conf.d/01autoremove-kernels \
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debian-$dist-mm/etc/apt/apt.conf.d/01autoremove-kernels
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# who creates /run/mount?
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sudo rm -f debian-$dist-debootstrap/run/mount/utab
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sudo rmdir debian-$dist-debootstrap/run/mount
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# debootstrap doesn't clean apt
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sudo rm debian-$dist-debootstrap/var/lib/apt/lists/localhost:8000_dists_${dist}_main_binary-amd64_Packages \
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debian-$dist-debootstrap/var/lib/apt/lists/localhost:8000_dists_${dist}_Release \
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debian-$dist-debootstrap/var/lib/apt/lists/localhost:8000_dists_${dist}_Release.gpg
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if [ "$variant" = "-" ]; then
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sudo rm debian-$dist-debootstrap/etc/machine-id
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sudo rm debian-$dist-mm/etc/machine-id
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sudo rm debian-$dist-debootstrap/var/lib/systemd/catalog/database
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sudo rm debian-$dist-mm/var/lib/systemd/catalog/database
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fi
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sudo rm debian-$dist-debootstrap/var/lib/dpkg/lock
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# introduced in dpkg 1.19.1
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if [ "$dist" = "unstable" ]; then
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sudo rm debian-$dist-debootstrap/var/lib/dpkg/lock-frontend
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fi
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# check if the file content differs
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sudo diff --no-dereference --brief --recursive debian-$dist-debootstrap debian-$dist-mm
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sudo rm -rf ./debian-$dist-debootstrap ./debian-$dist-mm \
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./debian-$dist-mm.tar
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if [ "$docache" != "true" ]; then
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rm "$cachedir/debian-$dist-$variant.tar"
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fi
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done
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eval $(awk '{print "var"NR"="$1}' timings)
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echo
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echo "timings"
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echo "======="
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echo
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echo "variant | mmdebstrap | debootstrap"
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echo "--------+------------+------------"
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echo "minbase | $var1 | $var2"
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echo "buildd | $var3 | $var4"
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if [ "$dist" != 'stable' ]; then
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echo "- | $var5 | $var6"
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fi
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eval $(awk '{print "var"NR"="$1}' sizes)
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echo
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echo "sizes"
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echo "======="
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echo
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echo "variant | mmdebstrap | debootstrap"
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echo "--------+------------+------------"
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echo "minbase | $var1 | $var2"
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echo "buildd | $var3 | $var4"
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if [ "$dist" != 'stable' ]; then
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echo "- | $var5 | $var6"
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fi
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rm timings sizes
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done
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kill $pid
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wait $pid || true
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trap - INT QUIT TERM EXIT
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