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iotests/detect-zeroes-registered-buf: add new test
This regression test demonstrates that detect-zeroes works with registered buffers. Bug details: https://gitlab.com/qemu-project/qemu/-/issues/1404 Reviewed-by: Eric Blake <eblake@redhat.com> Reviewed-by: Hanna Czenczek <hreitz@redhat.com> Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20230207203719.242926-5-stefanha@redhat.com>
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tests/qemu-iotests/tests/detect-zeroes-registered-buf
Executable file
58
tests/qemu-iotests/tests/detect-zeroes-registered-buf
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#!/usr/bin/env bash
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# group: rw auto quick
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#
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# Check that detect-zeroes=unmap works on writes with registered I/O buffers.
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# This is a regression test for
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# https://gitlab.com/qemu-project/qemu/-/issues/1404 where I/O requests failed
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# unexpectedly.
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#
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# Copyright Red Hat
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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=stefanha@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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cd ..
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. ./common.rc
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. ./common.filter
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_supported_fmt qcow2
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_supported_proto generic
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size=128M
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_make_test_img $size
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IMGSPEC="driver=$IMGFMT,file.filename=$TEST_IMG,discard=unmap,detect-zeroes=unmap"
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echo
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echo "== writing zero buffer to image =="
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QEMU_IO_OPTIONS="$QEMU_IO_OPTIONS_NO_FMT" $QEMU_IO -c "write -r -P 0 0 4k" --image-opts "$IMGSPEC" | _filter_qemu_io
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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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QA output created by detect-zeroes-registered-buf
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=134217728
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== writing zero buffer to image ==
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wrote 4096/4096 bytes at offset 0
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4 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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*** done
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