Re: [Qemu-devel] [PATCH v2 2/2] qemu-iotests: add multiwrite test cases

["Benoît Canet" <benoit.canet@irqsave.net>]

The Wednesday 30 Jul 2014 à 09:53:31 (+0100), Stefan Hajnoczi wrote :
> This test case covers the basic bdrv_aio_multiwrite() scenarios:
> 1. Single request
> 2. Sequential requests (AABB)
> 3. Superset overlapping requests (AABBAA)
> 4. Subset overlapping requests (BBAABB)
> 5. Head overlapping requests (AABB)
> 6. Tail overlapping requests (BBAA)
> 7. Disjoint requests (AA BB)
> 
> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
> ---
>  tests/qemu-iotests/100     | 134 +++++++++++++++++++++++++++++++++++++++++++++
>  tests/qemu-iotests/100.out |  89 ++++++++++++++++++++++++++++++
>  tests/qemu-iotests/group   |   1 +
>  3 files changed, 224 insertions(+)
>  create mode 100755 tests/qemu-iotests/100
>  create mode 100644 tests/qemu-iotests/100.out
> 
> diff --git a/tests/qemu-iotests/100 b/tests/qemu-iotests/100
> new file mode 100755
> index 0000000..9124aba
> --- /dev/null
> +++ b/tests/qemu-iotests/100
> @@ -0,0 +1,134 @@
> +#!/bin/bash
> +#
> +# Test simple read/write using plain bdrv_read/bdrv_write
> +#
> +# Copyright (C) 2014 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=stefanha@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 generic
> +_supported_proto generic
> +_supported_os Linux
> +
> +
> +size=128M
> +
> +echo
> +echo "== Single request =="
> +_make_test_img $size
> +$QEMU_IO -c "multiwrite 0 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== verify pattern =="
> +$QEMU_IO -c "read -P 0xcd 0 4k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== Sequential requests =="
> +_make_test_img $size
> +$QEMU_IO -c "multiwrite 0 4k ; 4k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== verify pattern =="
> +$QEMU_IO -c "read -P 0xcd 0 4k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0xce 4k 4k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0 8k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== Superset overlapping requests =="
> +_make_test_img $size
> +$QEMU_IO -c "multiwrite 0 4k ; 1k 2k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== verify pattern =="
> +# Order of overlapping in-flight requests is not guaranteed so we cannot verify
> +# [1k, 3k) since it could have either pattern 0xcd or 0xce.
> +$QEMU_IO -c "read -P 0xcd 0 1k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0xcd 3k 1k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== Subset overlapping requests =="
> +_make_test_img $size
> +$QEMU_IO -c "multiwrite 1k 2k ; 0k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== verify pattern =="
> +# Order of overlapping in-flight requests is not guaranteed so we cannot verify
> +# [1k, 3k) since it could have either pattern 0xcd or 0xce.
> +$QEMU_IO -c "read -P 0xce 0 1k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0xce 3k 1k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== Head overlapping requests =="
> +_make_test_img $size
> +$QEMU_IO -c "multiwrite 0k 2k ; 0k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== verify pattern =="
> +# Order of overlapping in-flight requests is not guaranteed so we cannot verify
> +# [0k, 2k) since it could have either pattern 0xcd or 0xce.
> +$QEMU_IO -c "read -P 0xce 2k 2k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== Tail overlapping requests =="
> +_make_test_img $size
> +$QEMU_IO -c "multiwrite 2k 2k ; 0k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== verify pattern =="
> +# Order of overlapping in-flight requests is not guaranteed so we cannot verify
> +# [2k, 4k) since it could have either pattern 0xcd or 0xce.
> +$QEMU_IO -c "read -P 0xce 0k 2k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== Disjoint requests =="
> +_make_test_img $size
> +$QEMU_IO -c "multiwrite 0 4k ; 64k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +echo
> +echo "== verify pattern =="
> +$QEMU_IO -c "read -P 0xcd 0 4k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0 4k 60k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0xce 64k 4k" "$TEST_IMG" | _filter_qemu_io
> +$QEMU_IO -c "read -P 0 68k 4k" "$TEST_IMG" | _filter_qemu_io
> +
> +# success, all done
> +echo "*** done"
> +rm -f $seq.full
> +status=0
> diff --git a/tests/qemu-iotests/100.out b/tests/qemu-iotests/100.out
> new file mode 100644
> index 0000000..2d6e9f0
> --- /dev/null
> +++ b/tests/qemu-iotests/100.out
> @@ -0,0 +1,89 @@
> +QA output created by 100
> +
> +== Single request ==
> +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
> +wrote 4096/4096 bytes at offset 0
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== verify pattern ==
> +read 4096/4096 bytes at offset 0
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 4096/4096 bytes at offset 4096
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== Sequential requests ==
> +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
> +wrote 8192/8192 bytes at offset 0
> +8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== verify pattern ==
> +read 4096/4096 bytes at offset 0
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 4096/4096 bytes at offset 4096
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 4096/4096 bytes at offset 8192
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== Superset overlapping requests ==
> +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
> +wrote 6144/6144 bytes at offset 0
> +6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== verify pattern ==
> +read 1024/1024 bytes at offset 0
> +1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 1024/1024 bytes at offset 3072
> +1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 4096/4096 bytes at offset 4096
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== Subset overlapping requests ==
> +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
> +wrote 6144/6144 bytes at offset 1024
> +6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== verify pattern ==
> +read 1024/1024 bytes at offset 0
> +1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 1024/1024 bytes at offset 3072
> +1 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 4096/4096 bytes at offset 4096
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== Head overlapping requests ==
> +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
> +wrote 6144/6144 bytes at offset 0
> +6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== verify pattern ==
> +read 2048/2048 bytes at offset 2048
> +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 4096/4096 bytes at offset 4096
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== Tail overlapping requests ==
> +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
> +wrote 6144/6144 bytes at offset 2048
> +6 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== verify pattern ==
> +read 2048/2048 bytes at offset 0
> +2 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 4096/4096 bytes at offset 4096
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== Disjoint requests ==
> +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728 
> +wrote 8192/8192 bytes at offset 0
> +8 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +
> +== verify pattern ==
> +read 4096/4096 bytes at offset 0
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 61440/61440 bytes at offset 4096
> +60 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 4096/4096 bytes at offset 65536
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +read 4096/4096 bytes at offset 69632
> +4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +*** done
> diff --git a/tests/qemu-iotests/group b/tests/qemu-iotests/group
> index 6e67f61..8e2215e 100644
> --- a/tests/qemu-iotests/group
> +++ b/tests/qemu-iotests/group
> @@ -100,3 +100,4 @@
>  091 rw auto quick
>  092 rw auto quick
>  095 rw auto quick
> +100 rw auto quick
> -- 
> 1.9.3
> 
> 

Reviewed-by: Benoit Canet <benoit@irqsave.net>