Commit cf2d1203 authored by Eric Blake's avatar Eric Blake
Browse files

iotests: Add test 291 to for qemu-img bitmap coverage 



Add a new test covering the 'qemu-img bitmap' subcommand, as well as
'qemu-img convert --bitmaps', both added in recent patches.

Signed-off-by: default avatarEric Blake <eblake@redhat.com>
Reviewed-by: default avatarMax Reitz <mreitz@redhat.com>
Reviewed-by: default avatarVladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Message-Id: <20200521192137.1120211-6-eblake@redhat.com>
parent 15e39ad9

tests/qemu-iotests/291

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#!/usr/bin/env bash

#

# Test qemu-img bitmap handling

#

# Copyright (C) 2018-2020 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/>.

#



seq="$(basename $0)"

echo "QA output created by $seq"



status=1 # failure is the default!



_cleanup()

{

    _cleanup_test_img

    nbd_server_stop

}

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



# get standard environment, filters and checks

. ./common.rc

. ./common.filter

. ./common.nbd



_supported_fmt qcow2

_supported_proto file

_supported_os Linux

_require_command QEMU_NBD



echo

echo "=== Initial image setup ==="

echo



# Create backing image with one bitmap

TEST_IMG="$TEST_IMG.base" _make_test_img 10M

$QEMU_IMG bitmap --add -f $IMGFMT "$TEST_IMG.base" b0

$QEMU_IO -c 'w 3M 1M' -f $IMGFMT "$TEST_IMG.base" | _filter_qemu_io



# Create initial image and populate two bitmaps: one active, one inactive.

ORIG_IMG=$TEST_IMG

TEST_IMG=$TEST_IMG.orig

_make_test_img -b "$ORIG_IMG.base" -F $IMGFMT 10M

$QEMU_IO -c 'w 0 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io

$QEMU_IMG bitmap --add -g 512k -f $IMGFMT "$TEST_IMG" b1

$QEMU_IMG bitmap --add --disable -f $IMGFMT "$TEST_IMG" b2

$QEMU_IO -c 'w 3M 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io

$QEMU_IMG bitmap --clear -f $IMGFMT "$TEST_IMG" b1

$QEMU_IO -c 'w 1M 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io

$QEMU_IMG bitmap --disable -f $IMGFMT "$TEST_IMG" b1

$QEMU_IMG bitmap --enable -f $IMGFMT "$TEST_IMG" b2

$QEMU_IO -c 'w 2M 1M' -f $IMGFMT "$TEST_IMG" | _filter_qemu_io



echo

echo "=== Bitmap preservation not possible to non-qcow2 ==="

echo



TEST_IMG=$ORIG_IMG

$QEMU_IMG convert --bitmaps -O raw "$TEST_IMG.orig" "$TEST_IMG" &&

    echo "unexpected success"



echo

echo "=== Convert with bitmap preservation ==="

echo



# Only bitmaps from the active layer are copied

$QEMU_IMG convert --bitmaps -O qcow2 "$TEST_IMG.orig" "$TEST_IMG"

$QEMU_IMG info "$TEST_IMG" | _filter_img_info --format-specific

# But we can also merge in bitmaps from other layers.  This test is a bit

# contrived to cover more code paths, in reality, you could merge directly

# into b0 without going through tmp

$QEMU_IMG bitmap --add --disable -f $IMGFMT "$TEST_IMG" b0

$QEMU_IMG bitmap --add --merge b0 -b "$TEST_IMG.base" -F $IMGFMT \

     -f $IMGFMT "$TEST_IMG" tmp

$QEMU_IMG bitmap --merge tmp -f $IMGFMT "$TEST_IMG" b0

$QEMU_IMG bitmap --remove --image-opts \

    driver=$IMGFMT,file.driver=file,file.filename="$TEST_IMG" tmp

$QEMU_IMG info "$TEST_IMG" | _filter_img_info --format-specific



echo

echo "=== Check bitmap contents ==="

echo



# x-dirty-bitmap is a hack for reading bitmaps; it abuses block status to

# report "data":false for portions of the bitmap which are set

IMG="driver=nbd,server.type=unix,server.path=$nbd_unix_socket"

nbd_server_start_unix_socket -r -f qcow2 -B b0 "$TEST_IMG"

$QEMU_IMG map --output=json --image-opts \

    "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b0" | _filter_qemu_img_map

nbd_server_start_unix_socket -r -f qcow2 -B b1 "$TEST_IMG"

$QEMU_IMG map --output=json --image-opts \

    "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b1" | _filter_qemu_img_map

nbd_server_start_unix_socket -r -f qcow2 -B b2 "$TEST_IMG"

$QEMU_IMG map --output=json --image-opts \

    "$IMG,x-dirty-bitmap=qemu:dirty-bitmap:b2" | _filter_qemu_img_map



# success, all done

echo '*** done'

rm -f $seq.full

status=0

tests/qemu-iotests/291.out

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QA output created by 291



=== Initial image setup ===



Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=10485760

wrote 1048576/1048576 bytes at offset 3145728

1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)

Formatting 'TEST_DIR/t.IMGFMT.orig', fmt=IMGFMT size=10485760 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT

wrote 1048576/1048576 bytes at offset 0

1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)

wrote 1048576/1048576 bytes at offset 3145728

1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)

wrote 1048576/1048576 bytes at offset 1048576

1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)

wrote 1048576/1048576 bytes at offset 2097152

1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)



=== Bitmap preservation not possible to non-qcow2 ===



qemu-img: Format driver 'raw' does not support bitmaps



=== Convert with bitmap preservation ===



image: TEST_DIR/t.IMGFMT

file format: IMGFMT

virtual size: 10 MiB (10485760 bytes)

disk size: 4.39 MiB

Format specific information:

    compat: 1.1

    compression type: zlib

    lazy refcounts: false

    bitmaps:

        [0]:

            flags:

            name: b1

            granularity: 524288

        [1]:

            flags:

                [0]: auto

            name: b2

            granularity: 65536

    refcount bits: 16

    corrupt: false

image: TEST_DIR/t.IMGFMT

file format: IMGFMT

virtual size: 10 MiB (10485760 bytes)

disk size: 4.48 MiB

Format specific information:

    compat: 1.1

    compression type: zlib

    lazy refcounts: false

    bitmaps:

        [0]:

            flags:

            name: b1

            granularity: 524288

        [1]:

            flags:

                [0]: auto

            name: b2

            granularity: 65536

        [2]:

            flags:

            name: b0

            granularity: 65536

    refcount bits: 16

    corrupt: false



=== Check bitmap contents ===



[{ "start": 0, "length": 3145728, "depth": 0, "zero": false, "data": true, "offset": OFFSET},

{ "start": 3145728, "length": 1048576, "depth": 0, "zero": false, "data": false},

{ "start": 4194304, "length": 6291456, "depth": 0, "zero": false, "data": true, "offset": OFFSET}]

[{ "start": 0, "length": 1048576, "depth": 0, "zero": false, "data": true, "offset": OFFSET},

{ "start": 1048576, "length": 1048576, "depth": 0, "zero": false, "data": false},

{ "start": 2097152, "length": 8388608, "depth": 0, "zero": false, "data": true, "offset": OFFSET}]

[{ "start": 0, "length": 2097152, "depth": 0, "zero": false, "data": true, "offset": OFFSET},

{ "start": 2097152, "length": 1048576, "depth": 0, "zero": false, "data": false},

{ "start": 3145728, "length": 7340032, "depth": 0, "zero": false, "data": true, "offset": OFFSET}]

*** done

tests/qemu-iotests/group

+1 −0
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@@ -299,5 +299,6 @@ 
288 quick

289 rw quick

290 rw auto quick

291 rw quick

292 rw auto quick

297 meta