mmdebstrap/run_qemu.sh

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#!/bin/sh
set -eu
cachedir="./shared/cache"
tmpdir="$(mktemp -d)"
# the path to debian-unstable.qcow must be absolute or otherwise qemu will
# look for the path relative to debian-unstable-overlay.qcow
qemu-img create -f qcow2 -b "$(realpath $cachedir)/debian-unstable.qcow" "$tmpdir/debian-unstable-overlay.qcow"
qemu-system-x86_64 -enable-kvm -m 512M -nographic \
-monitor unix:/tmp/monitor,server,nowait \
-serial unix:/tmp/ttyS0,server,nowait \
-serial unix:/tmp/ttyS1,server,nowait \
-virtfs local,id=mmdebstrap,path="$(pwd)/shared",security_model=none,mount_tag=mmdebstrap \
-drive file="$tmpdir/debian-unstable-overlay.qcow",cache=unsafe,index=0
head --lines=-1 shared/result.txt
if [ "$(tail --lines=1 shared/result.txt)" -ne 0 ]; then
echo "test.sh failed"
exit 1
fi
rm "$tmpdir/debian-unstable-overlay.qcow" shared/result.txt
rmdir "$tmpdir"