Commit 91d4093d authored by Kevin Wolf's avatar Kevin Wolf
Browse files

qemu-iotests: Test concurrent cluster allocations 



This adds some first tests for qcow2's dependency handling when two
parallel write requests access the same cluster.

Signed-off-by: default avatarKevin Wolf <kwolf@redhat.com>
parent 67a7a0eb

tests/qemu-iotests/046

0 → 100755
+215 −0
Original line number Diff line number Diff line 
#!/bin/bash

#

# Test concurrent cluster allocations

#

# Copyright (C) 2012 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=kwolf@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



_supported_fmt qcow2

_supported_proto generic

_supported_os Linux



CLUSTER_SIZE=64k

size=128M



echo

echo "== creating backing file for COW tests =="



_make_test_img $size



function backing_io()

{

    local offset=$1

    local sectors=$2

    local op=$3

    local pattern=0

    local cur_sec=0



    for i in $(seq 0 $((sectors - 1))); do

        cur_sec=$((offset / 65536 + i))

        pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))



        echo "$op -P $pattern $((cur_sec * 64))k 64k"

    done

}



backing_io 0 16 write | $QEMU_IO $TEST_IMG | _filter_qemu_io



mv $TEST_IMG $TEST_IMG.base



_make_test_img -b $TEST_IMG.base 6G



echo

echo "== Some concurrent requests touching the same cluster =="



function overlay_io()

{

# Allocate middle of cluster 1, then write to somewhere before and after it

cat  <<EOF

break write_aio A

aio_write -P 10 0x18000 0x2000

wait_break A



aio_write -P 11 0x12000 0x2000

aio_write -P 12 0x1c000 0x2000



resume A

aio_flush

EOF



# Sequential write case: Alloc middle of cluster 2, then write overlapping

# to next cluster

cat  <<EOF

break write_aio A

aio_write -P 20 0x28000 0x2000

wait_break A

aio_write -P 21 0x2a000 0x10000

resume A

aio_flush

EOF



# The same with a gap between both requests

cat  <<EOF

break write_aio A

aio_write -P 40 0x48000 0x2000

wait_break A

aio_write -P 41 0x4c000 0x10000

resume A

aio_flush

EOF



# Sequential write, but the next cluster is already allocated

cat  <<EOF

write -P 70 0x76000 0x8000

aio_flush

break write_aio A

aio_write -P 60 0x66000 0x2000

wait_break A

aio_write -P 61 0x6a000 0xe000

resume A

aio_flush

EOF



# Sequential write, but the next cluster is already allocated

# and phyiscally in the right position

cat  <<EOF

write -P 89 0x80000 0x1000

write -P 90 0x96000 0x8000

aio_flush

discard 0x80000 0x10000

aio_flush

break write_aio A

aio_write -P 80 0x86000 0x2000

wait_break A

aio_write -P 81 0x8a000 0xe000

resume A

aio_flush

EOF



# Sequential write, and the next cluster is compressed

cat  <<EOF

write    -P 109 0xa0000 0x1000

write -c -P 110 0xb0000 0x10000

aio_flush

discard 0xa0000 0x10000

aio_flush

break write_aio A

aio_write -P 100 0xa6000 0x2000

wait_break A

aio_write -P 101 0xaa000 0xe000

resume A

aio_flush

EOF

}



overlay_io | $QEMU_IO blkdebug::$TEST_IMG | _filter_qemu_io |\

	sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g'



echo

echo "== Verify image content =="



function verify_io()

{

    echo read -P 0 0 0x10000



    echo read -P 1  0x10000 0x2000

    echo read -P 11 0x12000 0x2000

    echo read -P 1  0x14000 0x4000

    echo read -P 10 0x18000 0x2000

    echo read -P 1  0x1a000 0x2000

    echo read -P 12 0x1c000 0x2000

    echo read -P 1  0x1e000 0x2000



    echo read -P 2  0x20000 0x8000

    echo read -P 20 0x28000 0x2000

    echo read -P 21 0x2a000 0x10000

    echo read -P 3  0x3a000 0x6000



    echo read -P 4  0x40000 0x8000

    echo read -P 40 0x48000 0x2000

    echo read -P 4  0x4a000 0x2000

    echo read -P 41 0x4c000 0x10000

    echo read -P 5  0x5c000 0x4000



    echo read -P 6  0x60000 0x6000

    echo read -P 60 0x66000 0x2000

    echo read -P 6  0x68000 0x2000

    echo read -P 61 0x6a000 0xe000

    echo read -P 70 0x78000 0x6000

    echo read -P 7  0x7e000 0x2000



    echo read -P 8  0x80000 0x6000

    echo read -P 80 0x86000 0x2000

    echo read -P 8  0x88000 0x2000

    echo read -P 81 0x8a000 0xe000

    echo read -P 90 0x98000 0x6000

    echo read -P 9  0x9e000 0x2000



    echo read -P 10  0xa0000 0x6000

    echo read -P 100 0xa6000 0x2000

    echo read -P 10  0xa8000 0x2000

    echo read -P 101 0xaa000 0xe000

    echo read -P 110 0xb8000 0x8000

}



verify_io | $QEMU_IO $TEST_IMG | _filter_qemu_io



_check_test_img



# success, all done

echo "*** done"

rm -f $seq.full

status=0

tests/qemu-iotests/046.out

0 → 100644
+163 −0
Original line number Diff line number Diff line 
QA output created by 046



== creating backing file for COW tests ==

Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 

qemu-io> wrote 65536/65536 bytes at offset 0

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

qemu-io> wrote 65536/65536 bytes at offset 65536

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

qemu-io> wrote 65536/65536 bytes at offset 131072

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

qemu-io> wrote 65536/65536 bytes at offset 196608

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

qemu-io> wrote 65536/65536 bytes at offset 262144

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

qemu-io> wrote 65536/65536 bytes at offset 327680

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

qemu-io> wrote 65536/65536 bytes at offset 393216

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

qemu-io> wrote 65536/65536 bytes at offset 458752

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

qemu-io> wrote 65536/65536 bytes at offset 524288

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

qemu-io> wrote 65536/65536 bytes at offset 589824

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

qemu-io> wrote 65536/65536 bytes at offset 655360

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

qemu-io> wrote 65536/65536 bytes at offset 720896

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

qemu-io> wrote 65536/65536 bytes at offset 786432

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

qemu-io> wrote 65536/65536 bytes at offset 851968

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

qemu-io> wrote 65536/65536 bytes at offset 917504

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

qemu-io> wrote 65536/65536 bytes at offset 983040

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

qemu-io> Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=6442450944 backing_file='TEST_DIR/t.IMGFMT.base' 



== Some concurrent requests touching the same cluster ==

qemu-io> qemu-io> qemu-io> blkdebug: Suspended request 'A'

qemu-io> qemu-io> qemu-io> qemu-io> qemu-io> blkdebug: Resuming request 'A'

qemu-io> wrote 8192/8192 bytes at offset XXX

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

wrote 8192/8192 bytes at offset XXX

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

wrote 8192/8192 bytes at offset XXX

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

qemu-io> qemu-io> blkdebug: Suspended request 'A'

qemu-io> qemu-io> qemu-io> blkdebug: Resuming request 'A'

qemu-io> wrote 8192/8192 bytes at offset XXX

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

wrote 65536/65536 bytes at offset XXX

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

qemu-io> qemu-io> blkdebug: Suspended request 'A'

qemu-io> qemu-io> qemu-io> blkdebug: Resuming request 'A'

qemu-io> wrote 8192/8192 bytes at offset XXX

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

wrote 65536/65536 bytes at offset XXX

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

qemu-io> wrote 32768/32768 bytes at offset XXX

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

qemu-io> qemu-io> qemu-io> blkdebug: Suspended request 'A'

qemu-io> qemu-io> qemu-io> blkdebug: Resuming request 'A'

qemu-io> wrote 8192/8192 bytes at offset XXX

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

wrote 57344/57344 bytes at offset XXX

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

qemu-io> wrote 4096/4096 bytes at offset XXX

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

qemu-io> wrote 32768/32768 bytes at offset XXX

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

qemu-io> qemu-io> discard 65536/65536 bytes at offset XXX

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

qemu-io> qemu-io> qemu-io> blkdebug: Suspended request 'A'

qemu-io> qemu-io> qemu-io> blkdebug: Resuming request 'A'

qemu-io> wrote 8192/8192 bytes at offset XXX

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

wrote 57344/57344 bytes at offset XXX

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

qemu-io> wrote 4096/4096 bytes at offset XXX

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

qemu-io> wrote 65536/65536 bytes at offset XXX

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

qemu-io> qemu-io> discard 65536/65536 bytes at offset XXX

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

qemu-io> qemu-io> qemu-io> blkdebug: Suspended request 'A'

qemu-io> qemu-io> qemu-io> blkdebug: Resuming request 'A'

qemu-io> wrote 8192/8192 bytes at offset XXX

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

wrote 57344/57344 bytes at offset XXX

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

qemu-io> 

== Verify image content ==

qemu-io> read 65536/65536 bytes at offset 0

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

qemu-io> read 8192/8192 bytes at offset 65536

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

qemu-io> read 8192/8192 bytes at offset 73728

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

qemu-io> read 16384/16384 bytes at offset 81920

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

qemu-io> read 8192/8192 bytes at offset 98304

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

qemu-io> read 8192/8192 bytes at offset 106496

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

qemu-io> read 8192/8192 bytes at offset 114688

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

qemu-io> read 8192/8192 bytes at offset 122880

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

qemu-io> read 32768/32768 bytes at offset 131072

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

qemu-io> read 8192/8192 bytes at offset 163840

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

qemu-io> read 65536/65536 bytes at offset 172032

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

qemu-io> read 24576/24576 bytes at offset 237568

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

qemu-io> read 32768/32768 bytes at offset 262144

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

qemu-io> read 8192/8192 bytes at offset 294912

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

qemu-io> read 8192/8192 bytes at offset 303104

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

qemu-io> read 65536/65536 bytes at offset 311296

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

qemu-io> read 16384/16384 bytes at offset 376832

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

qemu-io> read 24576/24576 bytes at offset 393216

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

qemu-io> read 8192/8192 bytes at offset 417792

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

qemu-io> read 8192/8192 bytes at offset 425984

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

qemu-io> read 57344/57344 bytes at offset 434176

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

qemu-io> read 24576/24576 bytes at offset 491520

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

qemu-io> read 8192/8192 bytes at offset 516096

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

qemu-io> read 24576/24576 bytes at offset 524288

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

qemu-io> read 8192/8192 bytes at offset 548864

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

qemu-io> read 8192/8192 bytes at offset 557056

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

qemu-io> read 57344/57344 bytes at offset 565248

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

qemu-io> read 24576/24576 bytes at offset 622592

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

qemu-io> read 8192/8192 bytes at offset 647168

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

qemu-io> read 24576/24576 bytes at offset 655360

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

qemu-io> read 8192/8192 bytes at offset 679936

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

qemu-io> read 8192/8192 bytes at offset 688128

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

qemu-io> read 57344/57344 bytes at offset 696320

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

qemu-io> read 32768/32768 bytes at offset 753664

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

qemu-io> No errors were found on the image.

*** done

tests/qemu-iotests/group

+1 −0
Original line number Diff line number Diff line
@@ -52,3 +52,4 @@ 
043 rw auto backing

044 rw auto

045 rw auto

046 rw auto aio