Commit 15a2b18f authored by Max Reitz's avatar Max Reitz
Browse files

iotests: Add test for multiple BB on BDS tree 



This adds a test for having multiple BlockBackends in one BDS tree. In
this case, there is one BB for the protocol BDS and one BB for the
format BDS in a simple two-BDS tree (with the protocol BDS and BB added
first).

When bdrv_close_all() is executed, no cached data from any BDS should be
lost; the protocol BDS may not be closed until the format BDS is closed.
Otherwise, metadata updates may be lost.

Signed-off-by: default avatarMax Reitz <mreitz@redhat.com>
Reviewed-by: default avatarKevin Wolf <kwolf@redhat.com>
Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent ca9bd24c

tests/qemu-iotests/117

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#!/bin/bash

#

# Test case for shared BDS between backend trees

#

# 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=mreitz@redhat.com



seq="$(basename $0)"

echo "QA output created by $seq"



here="$PWD"

tmp=/tmp/$$

status=1	# failure is the default!



_cleanup()

{

	_cleanup_test_img

}

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



_make_test_img 64k



_launch_qemu



_send_qemu_cmd $QEMU_HANDLE \

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

    'return'



_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'blockdev-add',

       'arguments': { 'options': { 'id': 'protocol',

                                   'driver': 'file',

                                   'filename': '$TEST_IMG' } } }" \

    'return'



_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'blockdev-add',

       'arguments': { 'options': { 'id': 'format',

                                   'driver': '$IMGFMT',

                                   'file': 'protocol' } } }" \

    'return'



_send_qemu_cmd $QEMU_HANDLE \

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

       'arguments': { 'command-line': 'qemu-io format \"write -P 42 0 64k\"' } }" \

    'return'



_send_qemu_cmd $QEMU_HANDLE \

    "{ 'execute': 'quit' }" \

    'return'



wait=1 _cleanup_qemu



_check_test_img



$QEMU_IO -c 'read -P 42 0 64k' "$TEST_IMG" | _filter_qemu_io



# success, all done

echo '*** done'

rm -f $seq.full

status=0

tests/qemu-iotests/117.out

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QA output created by 117

Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=65536

{"return": {}}

{"return": {}}

{"return": {}}

wrote 65536/65536 bytes at offset 0

64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)

{"return": ""}

{"return": {}}

{"timestamp": {"seconds":  TIMESTAMP, "microseconds":  TIMESTAMP}, "event": "SHUTDOWN"}

No errors were found on the image.

read 65536/65536 bytes at offset 0

64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)

*** done

tests/qemu-iotests/group

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@@ -122,6 +122,7 @@ 
114 rw auto quick

115 rw auto

116 rw auto quick

117 rw auto

118 rw auto

119 rw auto quick

120 rw auto quick