iotests: Check that images are in read-only mode after block-commit

#!/usr/bin/env bash

#

# Test that a backing image is put back in read-only mode after

# block-commit (both when it fails and when it succeeds).

#

# Copyright (C) 2019 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=berto@igalia.com

seq="$(basename $0)"

echo "QA output created by $seq"

status=1	# failure is the default!

_cleanup()

{

    _cleanup_test_img

    rm -f "$TEST_IMG.base"

    rm -f "$TEST_IMG.int"

}

trap "_cleanup; exit \$status" 0 1 2 3 15

# get standard environment, filters and checks

. ./common.rc

. ./common.filter

. ./common.qemu

# Any format implementing BlockDriver.bdrv_change_backing_file

_supported_fmt qcow2 qed

_supported_proto file

_supported_os Linux

IMG_SIZE=1M

# Create the images: base <- int <- active

TEST_IMG="$TEST_IMG.base" _make_test_img $IMG_SIZE | _filter_imgfmt

TEST_IMG="$TEST_IMG.int" _make_test_img -b "$TEST_IMG.base" | _filter_imgfmt

_make_test_img -b "$TEST_IMG.int" | _filter_imgfmt

# Launch QEMU with these two drives:

# none0: base (read-only)

# none1: base <- int <- active

_launch_qemu -drive if=none,file="${TEST_IMG}.base",node-name=base,read-only=on \

             -drive if=none,file="${TEST_IMG}",backing.node-name=int,backing.backing=base

_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'qmp_capabilities' }" \

    'return'

echo

echo '=== Send a write command to a drive opened in read-only mode (1)'

echo

_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'human-monitor-command',

       'arguments': {'command-line': 'qemu-io none0 \"aio_write 0 2k\"'}}" \

    'return'

echo

echo '=== Run block-commit on base using an invalid filter node name'

echo

_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'block-commit',

       'arguments': {'job-id': 'job0', 'device': 'none1', 'top-node': 'int',

                     'filter-node-name': '1234'}}" \

    'error'

echo

echo '=== Send a write command to a drive opened in read-only mode (2)'

echo

_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'human-monitor-command',

       'arguments': {'command-line': 'qemu-io none0 \"aio_write 0 2k\"'}}" \

    'return'

echo

echo '=== Run block-commit on base using the default filter node name'

echo

_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'block-commit',

       'arguments': {'job-id': 'job0', 'device': 'none1', 'top-node': 'int'}}" \

    'return'

# Wait for block-commit to finish

_send_qemu_cmd $QEMU_HANDLE '' \

    '"status": "null"'

echo

echo '=== Send a write command to a drive opened in read-only mode (3)'

echo

_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'human-monitor-command',

       'arguments': {'command-line': 'qemu-io none0 \"aio_write 0 2k\"'}}" \

    'return'

_cleanup_qemu

# success, all done

echo "*** done"

rm -f $seq.full

status=0

QA output created by 249

Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=1048576

Formatting 'TEST_DIR/t.IMGFMT.int', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.base

Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1048576 backing_file=TEST_DIR/t.IMGFMT.int

{"return": {}}

=== Send a write command to a drive opened in read-only mode (1)

{"return": "Block node is read-onlyrn"}

=== Run block-commit on base using an invalid filter node name

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "created", "id": "job0"}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "null", "id": "job0"}}

{"error": {"class": "GenericError", "desc": "Invalid node name"}}

=== Send a write command to a drive opened in read-only mode (2)

{"return": "Block node is read-onlyrn"}

=== Run block-commit on base using the default filter node name

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "created", "id": "job0"}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "running", "id": "job0"}}

{"return": {}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "waiting", "id": "job0"}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "pending", "id": "job0"}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "BLOCK_JOB_COMPLETED", "data": {"device": "job0", "len": 1048576, "offset": 1048576, "speed": 0, "type": "commit"}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "concluded", "id": "job0"}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "JOB_STATUS_CHANGE", "data": {"status": "null", "id": "job0"}}

=== Send a write command to a drive opened in read-only mode (3)

{"return": "Block node is read-onlyrn"}

*** done

246 rw auto quick

247 rw auto quick

248 rw auto quick

249 rw auto quick