#!/bin/bash
#
# Live snapshot tests
#
# This tests live snapshots of images on a running QEMU instance, using
# QMP commands. Both single disk snapshots, and transactional group
# snapshots are performed.
#
# Copyright (C) 2014 Red Hat, Inc.
# Copyright (C) 2015 Igalia, S.L.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# creator
owner=jcody@redhat.com
seq=`basename $0`
echo "QA output created by $seq"
here=`pwd`
status=1 # failure is the default!
snapshot_virt0="snapshot-v0.qcow2"
snapshot_virt1="snapshot-v1.qcow2"
SNAPSHOTS=10
_cleanup()
{
_cleanup_qemu
for i in $(seq 1 ${SNAPSHOTS})
do
rm -f "${TEST_DIR}/${i}-${snapshot_virt0}"
rm -f "${TEST_DIR}/${i}-${snapshot_virt1}"
done
rm -f "${TEST_IMG}.1" "${TEST_IMG}.2"
}
trap "_cleanup; exit \$status" 0 1 2 3 15
# get standard environment, filters and checks
. ./common.rc
. ./common.filter
. ./common.qemu
_supported_fmt qcow2
_supported_proto file
_supported_os Linux
# ${1}: unique identifier for the snapshot filename
function create_single_snapshot()
{
cmd="{ 'execute': 'blockdev-snapshot-sync',
'arguments': { 'device': 'virtio0',
'snapshot-file':'${TEST_DIR}/${1}-${snapshot_virt0}',
'format': 'qcow2' } }"
_send_qemu_cmd $h "${cmd}" "return"
}
# ${1}: unique identifier for the snapshot filename
function create_group_snapshot()
{
cmd="{ 'execute': 'transaction', 'arguments':
{'actions': [
{ 'type': 'blockdev-snapshot-sync', 'data' :
{ 'device': 'virtio0',
'snapshot-file': '${TEST_DIR}/${1}-${snapshot_virt0}' } },
{ 'type': 'blockdev-snapshot-sync', 'data' :
{ 'device': 'virtio1',
'snapshot-file': '${TEST_DIR}/${1}-${snapshot_virt1}' } } ]
} }"
_send_qemu_cmd $h "${cmd}" "return"
}
# ${1}: unique identifier for the snapshot filename
# ${2}: true: open backing images; false: don't open them (default)
function add_snapshot_image()
{
if [ "${2}" = "true" ]; then
extra_params=""
else
extra_params="'backing': '', "
fi
base_image="${TEST_DIR}/$((${1}-1))-${snapshot_virt0}"
snapshot_file="${TEST_DIR}/${1}-${snapshot_virt0}"
_make_test_img -b "${base_image}" "$size"
mv "${TEST_IMG}" "${snapshot_file}"
cmd="{ 'execute': 'blockdev-add', 'arguments':
{ 'driver': 'qcow2', 'node-name': 'snap_${1}', ${extra_params}
'file':
{ 'driver': 'file', 'filename': '${snapshot_file}',
'node-name': 'file_${1}' } } }"
_send_qemu_cmd $h "${cmd}" "return"
}
# ${1}: unique identifier for the snapshot filename
# ${2}: expected response, defaults to 'return'
function blockdev_snapshot()
{
cmd="{ 'execute': 'blockdev-snapshot',
'arguments': { 'node': 'virtio0',
'overlay':'snap_${1}' } }"
_send_qemu_cmd $h "${cmd}" "${2:-return}"
}
size=128M
_make_test_img $size
mv "${TEST_IMG}" "${TEST_IMG}.1"
_make_test_img $size
mv "${TEST_IMG}" "${TEST_IMG}.2"
echo
echo === Running QEMU ===
echo
qemu_comm_method="qmp"
_launch_qemu -drive file="${TEST_IMG}.1",if=virtio -drive file="${TEST_IMG}.2",if=virtio
h=$QEMU_HANDLE
echo
echo === Sending capabilities ===
echo
_send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" "return"
# Tests for the blockdev-snapshot-sync command
echo
echo === Create a single snapshot on virtio0 ===
echo
create_single_snapshot 1
echo
echo === Invalid command - missing device and nodename ===
echo
_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',
'arguments': { 'snapshot-file':'${TEST_DIR}/1-${snapshot_virt0}',
'format': 'qcow2' } }" "error"
echo
echo === Invalid command - missing snapshot-file ===
echo
_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',
'arguments': { 'device': 'virtio0',
'format': 'qcow2' } }" "error"
echo
echo
echo === Create several transactional group snapshots ===
echo
for i in $(seq 2 ${SNAPSHOTS})
do
create_group_snapshot ${i}
done
# Tests for the blockdev-snapshot command
echo
echo === Create a couple of snapshots using blockdev-snapshot ===
echo
SNAPSHOTS=$((${SNAPSHOTS}+1))
add_snapshot_image ${SNAPSHOTS}
blockdev_snapshot ${SNAPSHOTS}
SNAPSHOTS=$((${SNAPSHOTS}+1))
add_snapshot_image ${SNAPSHOTS}
blockdev_snapshot ${SNAPSHOTS}
echo
echo === Invalid command - cannot create a snapshot using a file BDS ===
echo
_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
'arguments': { 'node':'virtio0',
'overlay':'file_${SNAPSHOTS}' }
}" "error"
echo
echo === Invalid command - snapshot node used as active layer ===
echo
blockdev_snapshot ${SNAPSHOTS} error
_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
'arguments': { 'node':'virtio0',
'overlay':'virtio0' }
}" "error"
_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
'arguments': { 'node':'virtio0',
'overlay':'virtio1' }
}" "error"
echo
echo === Invalid command - snapshot node used as backing hd ===
echo
blockdev_snapshot $((${SNAPSHOTS}-1)) error
echo
echo === Invalid command - snapshot node has a backing image ===
echo
SNAPSHOTS=$((${SNAPSHOTS}+1))
add_snapshot_image ${SNAPSHOTS} true
blockdev_snapshot ${SNAPSHOTS} error
echo
echo === Invalid command - The node does not exist ===
echo
blockdev_snapshot $((${SNAPSHOTS}+1)) error
_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot',
'arguments': { 'node':'nodevice',
'overlay':'snap_${SNAPSHOTS}' }
}" "error"
# success, all done
echo "*** done"
rm -f $seq.full
status=0
