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5cddb2e95f
This simply calls bdrv_co_pwrite_zeroes() in all children. bs->supported_zero_flags is also set to the flags that are supported by all children. Signed-off-by: Alberto Garcia <berto@igalia.com> Message-Id: <2f09c842781fe336b4c2e40036bba577b7430190.1605286097.git.berto@igalia.com> Reviewed-by: Max Reitz <mreitz@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com>
160 lines
6.0 KiB
Bash
Executable File
160 lines
6.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Test drive-mirror with quorum
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#
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# The goal of this test is to check how the quorum driver reports
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# regions that are known to read as zeroes (BDRV_BLOCK_ZERO). The idea
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# is that drive-mirror will try the efficient representation of zeroes
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# in the destination image instead of writing actual zeroes.
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#
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# Copyright (C) 2020 Igalia, S.L.
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# Author: Alberto Garcia <berto@igalia.com>
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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=berto@igalia.com
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seq=`basename $0`
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echo "QA output created by $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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_rm_test_img "$TEST_IMG.0"
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_rm_test_img "$TEST_IMG.1"
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_rm_test_img "$TEST_IMG.2"
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_rm_test_img "$TEST_IMG.3"
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_cleanup_qemu
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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. ./common.qemu
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_supported_fmt qcow2
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_supported_proto file
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_supported_os Linux
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_unsupported_imgopts cluster_size data_file
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echo
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echo '### Create all images' # three source (quorum), one destination
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echo
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TEST_IMG="$TEST_IMG.0" _make_test_img -o cluster_size=64k 10M
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TEST_IMG="$TEST_IMG.1" _make_test_img -o cluster_size=64k 10M
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TEST_IMG="$TEST_IMG.2" _make_test_img -o cluster_size=64k 10M
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TEST_IMG="$TEST_IMG.3" _make_test_img -o cluster_size=64k 10M
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quorum="driver=raw,file.driver=quorum,file.vote-threshold=2"
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quorum="$quorum,file.children.0.file.filename=$TEST_IMG.0"
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quorum="$quorum,file.children.1.file.filename=$TEST_IMG.1"
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quorum="$quorum,file.children.2.file.filename=$TEST_IMG.2"
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quorum="$quorum,file.children.0.driver=$IMGFMT"
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quorum="$quorum,file.children.1.driver=$IMGFMT"
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quorum="$quorum,file.children.2.driver=$IMGFMT"
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echo
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echo '### Output of qemu-img map (empty quorum)'
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echo
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$QEMU_IMG map --image-opts $quorum | _filter_qemu_img_map
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# Now we write data to the quorum. All three images will read as
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# zeroes in all cases, but with different ways to represent them
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# (unallocated clusters, zero clusters, data clusters with zeroes)
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# that will have an effect on how the data will be mirrored and the
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# output of qemu-img map on the resulting image.
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echo
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echo '### Write data to the quorum'
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echo
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# Test 1: data regions surrounded by unallocated clusters.
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# Three data regions, the largest one (0x30000) will be picked, end result:
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# offset 0x10000, length 0x30000 -> data
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$QEMU_IO -c "write -P 0 $((0x10000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io
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$QEMU_IO -c "write -P 0 $((0x10000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io
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$QEMU_IO -c "write -P 0 $((0x10000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io
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# Test 2: zero regions surrounded by data clusters.
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# First we allocate the data clusters.
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$QEMU_IO -c "open -o $quorum" -c "write -P 0 $((0x100000)) $((0x40000))" | _filter_qemu_io
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# Three zero regions, the smallest one (0x10000) will be picked, end result:
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# offset 0x100000, length 0x10000 -> data
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# offset 0x110000, length 0x10000 -> zeroes
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# offset 0x120000, length 0x20000 -> data
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$QEMU_IO -c "write -z $((0x110000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io
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$QEMU_IO -c "write -z $((0x110000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io
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$QEMU_IO -c "write -z $((0x110000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io
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# Test 3: zero clusters surrounded by unallocated clusters.
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# Everything reads as zeroes, no effect on the end result.
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$QEMU_IO -c "write -z $((0x150000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io
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$QEMU_IO -c "write -z $((0x150000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io
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$QEMU_IO -c "write -z $((0x150000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io
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# Test 4: mix of data and zero clusters.
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# The zero region will be ignored in favor of the largest data region
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# (0x20000), end result:
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# offset 0x200000, length 0x20000 -> data
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$QEMU_IO -c "write -P 0 $((0x200000)) $((0x10000))" "$TEST_IMG.0" | _filter_qemu_io
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$QEMU_IO -c "write -z $((0x200000)) $((0x30000))" "$TEST_IMG.1" | _filter_qemu_io
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$QEMU_IO -c "write -P 0 $((0x200000)) $((0x20000))" "$TEST_IMG.2" | _filter_qemu_io
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# Test 5: write data to a region and then zeroize it, doing it
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# directly on the quorum device instead of the individual images.
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# This has no effect on the end result but proves that the quorum driver
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# supports 'write -z'.
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$QEMU_IO -c "open -o $quorum" -c "write -P 1 $((0x250000)) $((0x10000))" | _filter_qemu_io
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# Verify the data that we just wrote
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$QEMU_IO -c "open -o $quorum" -c "read -P 1 $((0x250000)) $((0x10000))" | _filter_qemu_io
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$QEMU_IO -c "open -o $quorum" -c "write -z $((0x250000)) $((0x10000))" | _filter_qemu_io
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# Now it should read back as zeroes
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$QEMU_IO -c "open -o $quorum" -c "read -P 0 $((0x250000)) $((0x10000))" | _filter_qemu_io
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echo
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echo '### Launch the drive-mirror job'
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echo
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qemu_comm_method="qmp" _launch_qemu -drive if=virtio,"$quorum"
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h=$QEMU_HANDLE
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_send_qemu_cmd $h "{ 'execute': 'qmp_capabilities' }" 'return'
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_send_qemu_cmd $h \
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"{'execute': 'drive-mirror',
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'arguments': {'device': 'virtio0',
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'format': '$IMGFMT',
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'target': '$TEST_IMG.3',
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'sync': 'full',
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'mode': 'existing' }}" \
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"BLOCK_JOB_READY.*virtio0"
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_send_qemu_cmd $h \
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"{ 'execute': 'block-job-complete',
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'arguments': { 'device': 'virtio0' } }" \
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'BLOCK_JOB_COMPLETED'
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_send_qemu_cmd $h "{ 'execute': 'quit' }" ''
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echo
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echo '### Output of qemu-img map (destination image)'
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echo
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$QEMU_IMG map "$TEST_IMG.3" | _filter_qemu_img_map
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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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