bf22957309
Running
git grep '\$here' tests/qemu-iotests
has 0 hits, which means we are setting a variable that has
no use. It appears that commit e8f8624d removed the last
use. So execute the following cmd to remove all of
the 'here=...' lines as dead code.
sed -i '/^here=/d' $(git grep -l '^here=' tests/qemu-iotests)
Cc: kwolf@redhat.com
Cc: mreitz@redhat.com
Cc: eblake@redhat.com
Suggested-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Mao Zhongyi <maozhongyi@cmss.chinamobile.com>
Message-Id: <20181024094051.4470-3-maozhongyi@cmss.chinamobile.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
[eblake: touch up commit message, reorder series, rebase to master]
Signed-off-by: Eric Blake <eblake@redhat.com>
138 lines
3.7 KiB
Bash
Executable File
138 lines
3.7 KiB
Bash
Executable File
#!/bin/bash
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#
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# Test aligned and misaligned write zeroes operations.
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#
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# Copyright (C) 2012 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# creator
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owner=pbonzini@redhat.com
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seq=`basename $0`
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echo "QA output created by $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt generic
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_supported_proto generic
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_supported_os Linux
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size=128M
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_make_test_img $size
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do_test()
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{
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local align=$1
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local iocmd=$2
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local img=$3
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if [ "$IMGOPTSSYNTAX" = "true" ]
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then
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IO_OPEN_ARG="$img"
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IO_EXTRA_ARGS="--image-opts"
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else
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IO_OPEN_ARG="-o driver=$IMGFMT,file.align=$align blkdebug::$img"
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IO_EXTRA_ARGS=""
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fi
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{
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echo "open $IO_OPEN_ARG"
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echo $iocmd
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} | $QEMU_IO $IO_EXTRA_ARGS
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}
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echo
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echo "=== Test aligned and misaligned write zeroes operations ==="
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for write_zero_cmd in "write -z" "aio_write -z"; do
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for align in 512 4k; do
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echo
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echo "== preparing image =="
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do_test $align "write -P 0xa 0x200 0x400" "$TEST_IMG" | _filter_qemu_io
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do_test $align "write -P 0xa 0x20000 0x600" "$TEST_IMG" | _filter_qemu_io
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do_test $align "$write_zero_cmd 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
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echo
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echo "== verifying patterns (1) =="
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do_test $align "read -P 0xa 0x200 0x200" "$TEST_IMG" | _filter_qemu_io
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do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
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do_test $align "read -P 0xa 0x20400 0x200" "$TEST_IMG" | _filter_qemu_io
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echo
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echo "== rewriting zeroes =="
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do_test $align "write -P 0xb 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io
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do_test $align "$write_zero_cmd 0x10000 0x10000" "$TEST_IMG" | _filter_qemu_io
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echo
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echo "== verifying patterns (2) =="
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do_test $align "read -P 0x0 0x400 0x20000" "$TEST_IMG" | _filter_qemu_io
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echo
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echo "== rewriting unaligned zeroes =="
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do_test $align "write -P 0xb 0x0 0x1000" "$TEST_IMG" | _filter_qemu_io
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do_test $align "$write_zero_cmd 0x200 0x200" "$TEST_IMG" | _filter_qemu_io
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echo
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echo "== verifying patterns (3) =="
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do_test $align "read -P 0xb 0x0 0x200" "$TEST_IMG" | _filter_qemu_io
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do_test $align "read -P 0x0 0x200 0x200" "$TEST_IMG" | _filter_qemu_io
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do_test $align "read -P 0xb 0x400 0xc00" "$TEST_IMG" | _filter_qemu_io
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echo
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done
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done
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_cleanup_test_img
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# Trigger truncate that would shrink qcow2 L1 table, which is done by
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# clearing one entry (8 bytes) with bdrv_co_pwrite_zeroes()
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echo
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echo "=== Test misaligned write zeroes via truncate ==="
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echo
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# any size will do, but the smaller the size the smaller the required image
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CLUSTER_SIZE=$((4 * 1024))
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L2_COVERAGE=$(($CLUSTER_SIZE * $CLUSTER_SIZE / 8))
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_make_test_img $(($L2_COVERAGE * 2))
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do_test 512 "write -P 1 0 0x200" "$TEST_IMG" | _filter_qemu_io
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# next L2 table
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do_test 512 "write -P 1 $L2_COVERAGE 0x200" "$TEST_IMG" | _filter_qemu_io
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# only interested in qcow2 here; also other formats might respond with
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# "not supported" error message
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if [ $IMGFMT = "qcow2" ]; then
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do_test 512 "truncate $L2_COVERAGE" "$TEST_IMG" | _filter_qemu_io
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fi
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do_test 512 "read -P 1 0 0x200" "$TEST_IMG" | _filter_qemu_io
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# success, all done
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echo
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echo "*** done"
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rm -f $seq.full
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status=0
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