Signed-off-by: Anton Nefedov <anton.nefe...@virtuozzo.com> --- tests/qemu-iotests/190 | 146 +++++++++++++++++++++++++++++++++++++++++++++ tests/qemu-iotests/190.out | 50 ++++++++++++++++ tests/qemu-iotests/group | 1 + 3 files changed, 197 insertions(+) create mode 100755 tests/qemu-iotests/190 create mode 100644 tests/qemu-iotests/190.out
diff --git a/tests/qemu-iotests/190 b/tests/qemu-iotests/190 new file mode 100755 index 0000000..ad7162a --- /dev/null +++ b/tests/qemu-iotests/190 @@ -0,0 +1,146 @@ +#!/bin/env bash +# +# Test qcow2 BDRV_REQ_ALLOCATE requests +# +# Copyright (c) 2017 Parallels International GmbH +# +# 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 +} +trap "_cleanup; exit \$status" 0 1 2 3 15 + +# get standard environment, filters and checks +. ./common.rc +. ./common.filter + +_supported_fmt qcow2 +_supported_proto file +_supported_os Linux + +function do_io() +{ + $QEMU_IO "$@" | _filter_qemu_io |\ + sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g' +} + +CLUSTER_SIZE=64k +size=128M + +_make_test_img 1G + +echo +echo "== Test discarded cluster reuse ==" + +# allocate first two clusters +do_io -c "writev -P 1 0x8000 0x10000" "$TEST_IMG" +len=$(stat -c "%s" $TEST_IMG) + +# discard the 1st cluster on qcow2 level only +do_io -c "open -o pass-discard-request=off $TEST_IMG" -c "discard 0 0x10000" + +# new write will reuse the dirty host cluster and has to overwrite that +# with zeroes +do_io -c "writev -P 2 0x24000 0x8000" "$TEST_IMG" +if [ $len -ne $(stat -c "%s" $TEST_IMG) ] ; then + >&2 echo "Failed to reuse cluster" + exit 1 +fi + +echo +echo "== Test preallocation ==" + +function io_commands() +{ + echo "open -o prealloc-size=$((1024*1024)) blkdebug::$TEST_IMG" + + # Verify that intersections of a running preallocation and new requests + # is handled properly. + # + # 1. send a write #1 which triggers preallocation, suspend it in action + # 2. send a write #2 which intersects with the area being preallocated + # 3. using break/wait_break/resume, wait until write #2 is at least + # at WRITE_AIO tracepoint. + # Then it is supposed to enter pwrite(bs->child) and start waiting + # for #1 to finish + # 4. resume #1 + +cat <<EOF +break pwritev_zero A +aio_write -P 3 0x30000 0x1000 +wait_break A + +break write_aio B +aio_write -P 4 0x40000 0x1000 +wait_break B +resume B + +resume A +aio_flush +EOF + + # Verify that new cluster in the preallocated area triggers + # neither new preallocation nor COW read + # + # TODO: this test will not fail but hang. Better ideas? + # wait and kill by timeout? + +cat <<EOF +break pwritev_zero A +break cow_read B +writev -P 5 0x51000 0x1000 +EOF +} + +io_commands | do_io + +echo +echo "== Verify image content ==" + +function verify_io() +{ +cat <<EOF +read -P 0 0 0x10000 +read -P 1 0x10000 0x8000 +read -P 0 0x18000 0xc000 +read -P 2 0x24000 0x8000 +read -P 0 0x2c000 0x4000 + +read -P 3 0x30000 0x1000 +read -P 0 0x31000 0xf000 +read -P 4 0x40000 0x1000 +read -P 0 0x41000 0xf000 + +read -P 0 0x50000 0x1000 +read -P 5 0x51000 0x1000 +read -P 0 0x52000 0xe000 +EOF +} + +verify_io | do_io $TEST_IMG + +_check_test_img + +# success, all done +echo "*** done" +rm -f $seq.full +status=0 diff --git a/tests/qemu-iotests/190.out b/tests/qemu-iotests/190.out new file mode 100644 index 0000000..46597ab --- /dev/null +++ b/tests/qemu-iotests/190.out @@ -0,0 +1,50 @@ +QA output created by 190 +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=1073741824 + +== Test discarded cluster reuse == +wrote 65536/65536 bytes at offset XXX +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +discard 65536/65536 bytes at offset XXX +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 32768/32768 bytes at offset XXX +32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== Test preallocation == +blkdebug: Suspended request 'A' +blkdebug: Suspended request 'B' +blkdebug: Resuming request 'B' +blkdebug: Resuming request 'A' +wrote 4096/4096 bytes at offset XXX +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 4096/4096 bytes at offset XXX +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +wrote 4096/4096 bytes at offset XXX +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) + +== Verify image content == +read 65536/65536 bytes at offset XXX +64 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 32768/32768 bytes at offset XXX +32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 49152/49152 bytes at offset XXX +48 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 32768/32768 bytes at offset XXX +32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 16384/16384 bytes at offset XXX +16 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 4096/4096 bytes at offset XXX +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 61440/61440 bytes at offset XXX +60 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 4096/4096 bytes at offset XXX +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 61440/61440 bytes at offset XXX +60 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 4096/4096 bytes at offset XXX +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 4096/4096 bytes at offset XXX +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +read 57344/57344 bytes at offset XXX +56 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec) +No errors were found on the image. +*** done diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group index 287f0ea..4af9fef 100644 --- a/tests/qemu-iotests/group +++ b/tests/qemu-iotests/group @@ -184,3 +184,4 @@ 186 rw auto 188 rw auto quick 189 rw auto +190 rw auto -- 2.7.4
