2020-05-04 23:52:17 +08:00
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#!/usr/bin/env bash
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2021-01-16 21:44:19 +08:00
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# group: rw auto quick
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2020-05-04 23:52:17 +08:00
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#
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# Test resizing a qcow2 image with a backing file
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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 $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt qcow2
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2020-10-28 03:05:59 +08:00
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_supported_proto file fuse
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2020-05-04 23:52:17 +08:00
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_supported_os Linux
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2020-06-17 18:48:20 +08:00
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# We need qemu-img map to show the file where the data is allocated,
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# but with an external data file, it will show that instead of the
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# file we want to check. So just skip this test for external data
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# files.
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_unsupported_imgopts data_file
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2020-05-04 23:52:17 +08:00
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echo '### Create the backing image'
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BACKING_IMG="$TEST_IMG.base"
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TEST_IMG="$BACKING_IMG" _make_test_img 1M
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echo '### Fill the backing image with data (0x11)'
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$QEMU_IO -c 'write -P 0x11 0 1M' "$BACKING_IMG" | _filter_qemu_io
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echo '### Create the top image'
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_make_test_img -F "$IMGFMT" -b "$BACKING_IMG"
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echo '### Fill the top image with data (0x22)'
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$QEMU_IO -c 'write -P 0x22 0 1M' "$TEST_IMG" | _filter_qemu_io
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# Both offsets are part of the same cluster.
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echo '### Shrink the image to 520k'
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$QEMU_IMG resize --shrink "$TEST_IMG" 520k
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echo '### Grow the image to 567k'
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$QEMU_IMG resize "$TEST_IMG" 567k
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echo '### Check that the tail of the image reads as zeroes'
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$QEMU_IO -c 'read -P 0x22 0 520k' "$TEST_IMG" | _filter_qemu_io
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$QEMU_IO -c 'read -P 0x00 520k 47k' "$TEST_IMG" | _filter_qemu_io
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echo '### Show output of qemu-img map'
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$QEMU_IMG map "$TEST_IMG" | _filter_testdir
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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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