f0947dc694
See the new comment for why this should be done. I do not have a reproducer on master, but when using FUSE block exports, this test breaks depending on the underlying filesystem (for me, it works on tmpfs, but fails on xfs, because the block allocated by file-posix has 16 kB there instead of 4 kB). Suggested-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Max Reitz <mreitz@redhat.com> Message-Id: <20201207152245.66987-1-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
71 lines
2.1 KiB
Bash
Executable File
71 lines
2.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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#
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# Test qemu-img vs. unaligned images
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# (See also 253, which is the O_DIRECT version)
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#
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# Copyright (C) 2018-2019 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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seq="$(basename $0)"
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echo "QA output created by $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt raw
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_supported_proto file fuse
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_supported_os Linux
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_default_cache_mode writeback
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_supported_cache_modes writeback writethrough unsafe
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echo
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echo "=== Check mapping of unaligned raw image ==="
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echo
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_make_test_img 65537 # qemu-img create rounds size up
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# file-posix allocates the first block of any images when it is created;
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# the size of this block depends on the host page size and the file
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# system block size, none of which are constant. Discard the whole
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# image so we will not see this allocation in qemu-img map's output.
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$QEMU_IO -c 'discard 0 65537' "$TEST_IMG" | _filter_qemu_io
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$QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
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truncate --size=65537 "$TEST_IMG" # so we resize it and check again
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$QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
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$QEMU_IO -c 'w 65536 1' "$TEST_IMG" | _filter_qemu_io # writing also rounds up
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$QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map
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truncate --size=65537 "$TEST_IMG" # so we resize it and check again
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$QEMU_IMG map --output=json "$TEST_IMG" | _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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