block: qemu-iotests - add test for snapshot, commit, snapshot bug

#!/bin/bash

# Check live snapshot, followed by active commit, and another snapshot.

#

# This test is to catch the error case of BZ #1300209:

# https://bugzilla.redhat.com/show_bug.cgi?id=1300209

#

# Copyright (C) 2016 Red Hat, Inc.

#

# 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!

TMP_SNAP1=${TEST_DIR}/tmp.qcow2

TMP_SNAP2=${TEST_DIR}/tmp2.qcow2

_cleanup()

{

    _cleanup_qemu

    rm -f "${TEST_IMG}" "${TMP_SNAP1}" "${TMP_SNAP2}"

}

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

size=512M

_make_test_img $size

echo

echo === Launching QEMU ===

echo

qemu_comm_method="qmp"

_launch_qemu -drive file="${TEST_IMG}",if=virtio

h=$QEMU_HANDLE

echo

echo === Performing Live Snapshot 1 ===

echo

_send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" "return"

# First live snapshot, new overlay as active layer

_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',

                                'arguments': {

                                             'device': 'virtio0',

                                             'snapshot-file':'${TMP_SNAP1}',

                                             'format': 'qcow2'

                                             }

                    }" "return"

echo

echo === Performing block-commit on active layer ===

echo

# Block commit on active layer, push the new overlay into base

_send_qemu_cmd $h "{ 'execute': 'block-commit',

                                'arguments': {

                                                 'device': 'virtio0'

                                              }

                    }" "READY"

_send_qemu_cmd $h "{ 'execute': 'block-job-complete',

                                'arguments': {

                                                'device': 'virtio0'

                                              }

                   }" "COMPLETED"

echo

echo === Performing Live Snapshot 2 ===

echo

# New live snapshot, new overlays as active layer

_send_qemu_cmd $h "{ 'execute': 'blockdev-snapshot-sync',

                                'arguments': {

                                                'device': 'virtio0',

                                                'snapshot-file':'${TMP_SNAP2}',

                                                'format': 'qcow2'

                                              }

                   }" "return"

# success, all done

echo "*** done"

rm -f $seq.full

status=0

QA output created by 144

Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=536870912

=== Launching QEMU ===

=== Performing Live Snapshot 1 ===

{"return": {}}

Formatting 'TEST_DIR/tmp.qcow2', fmt=qcow2 size=536870912 backing_file=TEST_DIR/t.qcow2 backing_fmt=qcow2 encryption=off cluster_size=65536 lazy_refcounts=off refcount_bits=16

{"return": {}}

=== Performing block-commit on active layer ===

{"return": {}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_READY", "data": {"device": "virtio0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}

{"return": {}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "virtio0", "len": 0, "offset": 0, "speed": 0, "type": "commit"}}

=== Performing Live Snapshot 2 ===

Formatting 'TEST_DIR/tmp2.qcow2', fmt=qcow2 size=536870912 backing_file=TEST_DIR/t.qcow2 backing_fmt=qcow2 encryption=off cluster_size=65536 lazy_refcounts=off refcount_bits=16

{"return": {}}

*** done

141 rw auto quick

142 auto

143 auto quick

144 rw auto quick