flatcar-scripts/lib/cros_vm_lib.sh
Chris Sosa c2db26c796 Add methods to run vm tests on x86-pre-flight-queue.
Right now we're leaving error_ok=True until the tests are shown to work on builder.

Change-Id: I6b8c690a0da30948389fd4312032c78d87115364

BUG=6906
TEST=Ran through it locally.

Review URL: http://codereview.chromium.org/3591002
2010-09-30 14:25:25 -07:00

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# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
#
# Common vm functions for use in crosutils.
DEFINE_string kvm_pid "" \
"Use this pid file. If it exists and is set, use the vm specified by pid."
DEFINE_boolean no_graphics ${FLAGS_FALSE} "Runs the KVM instance silently."
DEFINE_boolean persist "${FLAGS_FALSE}" "Persist vm."
DEFINE_boolean snapshot ${FLAGS_FALSE} "Don't commit changes to image."
DEFINE_integer ssh_port 9222 "Port to tunnel ssh traffic over."
KVM_PID_FILE=/tmp/kvm.$$.pid
function get_pid() {
sudo cat "${KVM_PID_FILE}"
}
# TODO(rtc): These flags assume that we'll be using KVM on Lucid and won't work
# on Hardy.
# $1: Path to the virtual image to start.
function start_kvm() {
# Override default pid file.
[ -n "${FLAGS_kvm_pid}" ] && KVM_PID_FILE=${FLAGS_kvm_pid}
if [ -e "${KVM_PID_FILE}" ]; then
local pid=$(get_pid)
# Check if the process exists.
if ps -p ${pid} > /dev/null ; then
echo "Using a pre-created KVM instance specified by ${FLAGS_kvm_pid}."
else
# Let's be safe in case they specified a file that isn't a pid file.
echo "File ${KVM_PID_FILE} exists but specified pid doesn't."
exit 1
fi
else
# No pid specified by PID file. Let's create a VM instance in this case.
echo "Starting a KVM instance"
local nographics=""
local usesnapshot=""
if [ ${FLAGS_no_graphics} -eq ${FLAGS_TRUE} ]; then
nographics="-nographic"
fi
if [ ${FLAGS_snapshot} -eq ${FLAGS_TRUE} ]; then
snapshot="-snapshot"
fi
sudo kvm -m 1024 \
-vga std \
-pidfile "${KVM_PID_FILE}" \
-daemonize \
-net nic \
${nographics} \
${snapshot} \
-net user,hostfwd=tcp::${FLAGS_ssh_port}-:22 \
-hda "${1}"
fi
}
function stop_kvm() {
if [ "${FLAGS_persist}" -eq "${FLAGS_TRUE}" ]; then
echo "Persist requested. Use --ssh_port ${FLAGS_ssh_port} " \
"--kvm_pid ${KVM_PID_FILE} to re-connect to it."
else
echo "Stopping the KVM instance"
local pid=$(get_pid)
echo "Killing ${pid}"
sudo kill ${pid}
sudo rm "${KVM_PID_FILE}"
fi
}