57284d2ada
Many tests (that do not support generic protocols) can run just fine with FUSE-exported images, so allow them to. Note that this is no attempt at being definitely complete. There are some tests that might be modified to run on FUSE, but this patch still skips them. This patch only tries to pick the rather low-hanging fruits. Note that 221 and 250 only pass when .lseek is correctly implemented, which is only possible with a libfuse that is 3.8 or newer. Signed-off-by: Max Reitz <mreitz@redhat.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Message-Id: <20201027190600.192171-20-mreitz@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
80 lines
2.3 KiB
Bash
Executable file
80 lines
2.3 KiB
Bash
Executable file
#!/usr/bin/env bash
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#
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# Test big discard in qcow2 shrink
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#
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# Copyright (c) 2019 Virtuozzo International GmbH. All rights reserved.
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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=vsementsov@virtuozzo.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 qcow2
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_supported_proto file fuse
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_supported_os Linux
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# This test does not make much sense with external data files
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_unsupported_imgopts data_file
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# This test checks that qcow2_process_discards does not truncate a discard
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# request > 2G.
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# To reproduce bug we need to overflow int by one sequential discard, so we
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# need size > 2G, bigger cluster size (as with default 64k we may have maximum
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# of 512M sequential data, corresponding to one L1 entry), and we need some
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# data of the beginning of the disk mapped to the end of file to prevent
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# bdrv_co_truncate(bs->file) call in qcow2_co_truncate(), which might succeed
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# anyway.
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disk_usage()
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{
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du --block-size=1 $1 | awk '{print $1}'
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}
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size=2100M
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_make_test_img -o "cluster_size=1M,preallocation=metadata" $size
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$QEMU_IO -c 'discard 0 10M' -c 'discard 2090M 10M' \
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-c 'write 2090M 10M' -c 'write 0 10M' "$TEST_IMG" | _filter_qemu_io
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# Check that our trick with swapping first and last 10M chunks succeeded.
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# Otherwise test may pass even if bdrv_pdiscard() fails in
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# qcow2_process_discards()
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$QEMU_IMG map "$TEST_IMG" | _filter_testdir
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before=$(disk_usage "$TEST_IMG")
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$QEMU_IMG resize --shrink "$TEST_IMG" 5M
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after=$(disk_usage "$TEST_IMG")
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echo "Disk usage delta: $((before - after))"
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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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