134 lines
3.1 KiB
Bash
Executable File
134 lines
3.1 KiB
Bash
Executable File
#!/bin/bash
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#
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# Test COW from backing files with AIO
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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=kwolf@redhat.com
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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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 qcow2 qed
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_supported_proto generic
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_supported_os Linux
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CLUSTER_SIZE=2M
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size=128M
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echo
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echo "== creating backing file for COW tests =="
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_make_test_img $size
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function backing_io()
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{
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local offset=$1
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local sectors=$2
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local op=$3
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local pattern=0
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local cur_sec=0
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for i in $(seq 0 $((sectors - 1))); do
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cur_sec=$((offset / 65536 + i))
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pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))
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echo "$op -P $pattern $((cur_sec * 64))k 64k"
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done
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}
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backing_io 0 256 write | $QEMU_IO $TEST_IMG | _filter_qemu_io
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mv $TEST_IMG $TEST_IMG.base
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_make_test_img -b $TEST_IMG.base 6G
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echo
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echo "== Some concurrent requests touching the same cluster =="
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function overlay_io()
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{
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# Start with a request touching two clusters
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echo aio_write -P 0x80 2020k 80k
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# Then add some requests all over the place
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for i in $(seq 0 15; seq 17 31; seq 33 47); do
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echo aio_write -P $((0x81 + i)) $((i * 128))k 64k
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done
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# Then backwards overwriting part of them
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for i in $( (seq 0 15; seq 17 31; seq 33 47) | tac); do
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echo aio_write -P $((0x81 + i)) $((i * 128 + 32))k 64k
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done
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# And finally crossing the next cluster boundary
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echo aio_write -P 0x90 4080k 80k
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}
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overlay_io | $QEMU_IO $TEST_IMG | _filter_qemu_io |\
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sed -e 's/bytes at offset [0-9]*/bytes at offset XXX/g'
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echo
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echo "== Verify image content =="
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function verify_io()
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{
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echo read -P 31 2016k 4k
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echo read -P 0x80 2020k 80k
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echo read -P 32 2100k 12k
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echo read -P 33 2112k 64k
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echo read -P 63 4064k 16k
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echo read -P 0x90 4080k 80k
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echo read -P 65 4160k 64k
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for i in $(seq 0 15; seq 17 31; seq 33 47); do
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echo read -P $((0x81 + i)) $((i * 128))k 96k
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done
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for i in $(seq 0 14; seq 16 30; seq 32 47); do
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local cur_sec=$(( i * 2 + 1 ))
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local pattern=$(( ( (cur_sec % 128) + (cur_sec / 128)) % 128 ))
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echo read -P $pattern $((i * 128 + 96))k 32k
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done
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}
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verify_io | $QEMU_IO $TEST_IMG | _filter_qemu_io
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_check_test_img
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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