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166 lines
5.5 KiB
Bash
166 lines
5.5 KiB
Bash
#!/usr/bin/env bash
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# group: rw backing auto quick
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#
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# Test qemu-img rebase with compression
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#
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# Copyright (c) 2023 Virtuozzo International GmbH.
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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=andrey.drobyshev@virtuozzo.com
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seq=`basename $0`
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echo "QA output created by $seq"
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status=1 # failure is the default!
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_cleanup()
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{
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_cleanup_test_img
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_rm_test_img "$TEST_IMG.base"
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_rm_test_img "$TEST_IMG.itmd"
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt qcow2
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_supported_proto file
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_supported_os Linux
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# Want the size divisible by 2 and 3
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size=$(( 48 * 1024 * 1024 ))
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half_size=$(( size / 2 ))
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third_size=$(( size / 3 ))
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# 1. "qemu-img rebase -c" should refuse working with any format which doesn't
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# support compression. We only check "-f raw" here.
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echo
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echo "=== Testing compressed rebase format compatibility ==="
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echo
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$QEMU_IMG create -f raw "$TEST_IMG" "$size" | _filter_img_create
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$QEMU_IMG rebase -c -f raw -b "" "$TEST_IMG"
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# 2. Write the 1st half of $size to backing file (compressed), 2nd half -- to
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# the top image (also compressed). Rebase the top image onto no backing file,
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# with compression (i.e. "qemu-img -c -b ''"). Check that the resulting image
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# has the written data preserved, and "qemu-img check" reports 100% clusters
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# as compressed.
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echo
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echo "=== Testing rebase with compression onto no backing file ==="
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echo
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TEST_IMG="$TEST_IMG.base" _make_test_img $size
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_make_test_img -b "$TEST_IMG.base" -F $IMGFMT $size
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$QEMU_IO -c "write -c -P 0xaa 0 $half_size" "$TEST_IMG.base" | _filter_qemu_io
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$QEMU_IO -c "write -c -P 0xbb $half_size $half_size" "$TEST_IMG" \
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| _filter_qemu_io
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$QEMU_IMG rebase -c -f $IMGFMT -b "" "$TEST_IMG"
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$QEMU_IO -c "read -P 0xaa 0 $half_size" "$TEST_IMG" | _filter_qemu_io
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$QEMU_IO -c "read -P 0xbb $half_size $half_size" "$TEST_IMG" | _filter_qemu_io
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$QEMU_IMG check "$TEST_IMG" | _filter_testdir
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# 3. Same as the previous one, but with raw backing file (hence write to
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# the backing is uncompressed).
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echo
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echo "=== Testing rebase with compression with raw backing file ==="
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echo
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$QEMU_IMG create -f raw "$TEST_IMG.base" "$half_size" | _filter_img_create
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_make_test_img -b "$TEST_IMG.base" -F raw $size
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$QEMU_IO -f raw -c "write -P 0xaa 0 $half_size" "$TEST_IMG.base" \
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| _filter_qemu_io
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$QEMU_IO -c "write -c -P 0xbb $half_size $half_size" \
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"$TEST_IMG" | _filter_qemu_io
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$QEMU_IMG rebase -c -f $IMGFMT -b "" "$TEST_IMG"
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$QEMU_IO -c "read -P 0xaa 0 $half_size" "$TEST_IMG" | _filter_qemu_io
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$QEMU_IO -c "read -P 0xbb $half_size $half_size" "$TEST_IMG" | _filter_qemu_io
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$QEMU_IMG check "$TEST_IMG" | _filter_testdir
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# 4. Create a backing chain base<--itmd<--img, filling 1st, 2nd and 3rd
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# thirds of them, respectively (with compression). Rebase img onto base,
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# effectively deleting itmd from the chain, and check that written data is
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# preserved in the resulting image. Also check that "qemu-img check" reports
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# 100% clusters as compressed.
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echo
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echo "=== Testing compressed rebase removing single delta from the chain ==="
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echo
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TEST_IMG="$TEST_IMG.base" _make_test_img $size
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TEST_IMG="$TEST_IMG.itmd" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT $size
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_make_test_img -b "$TEST_IMG.itmd" -F $IMGFMT $size
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$QEMU_IO -c "write -c -P 0xaa 0 $third_size" \
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"$TEST_IMG.base" | _filter_qemu_io
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$QEMU_IO -c "write -c -P 0xbb $third_size $third_size" \
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"$TEST_IMG.itmd" | _filter_qemu_io
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$QEMU_IO -c "write -c -P 0xcc $((third_size * 2 )) $third_size" \
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"$TEST_IMG" | _filter_qemu_io
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$QEMU_IMG rebase -c -f $IMGFMT -b "$TEST_IMG.base" -F $IMGFMT "$TEST_IMG"
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$QEMU_IO -c "read -P 0xaa 0 $third_size" "$TEST_IMG" | _filter_qemu_io
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$QEMU_IO -c "read -P 0xbb $third_size $third_size" \
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"$TEST_IMG" | _filter_qemu_io
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$QEMU_IO -c "read -P 0xcc $(( third_size * 2 )) $third_size" \
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"$TEST_IMG" | _filter_qemu_io
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$QEMU_IMG check "$TEST_IMG" | _filter_testdir
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# 5. Create one-cluster backing and overlay images, and fill only the first
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# (half - 1) bytes of the backing with data (uncompressed). Rebase the
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# overlay onto no backing file with compression. Check that data is still
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# read correctly, and that cluster is now really compressed ("qemu-img check"
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# reports 100% clusters as compressed.
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echo
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echo "=== Testing compressed rebase with unaligned unmerged data ==="
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echo
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CLUSTER_SIZE=65536
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TEST_IMG="$TEST_IMG.base" _make_test_img $CLUSTER_SIZE
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_make_test_img -b "$TEST_IMG.base" -F $IMGFMT $CLUSTER_SIZE
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$QEMU_IO -c "write -P 0xaa 0 $(( CLUSTER_SIZE / 2 - 1 ))" $TEST_IMG.base \
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| _filter_qemu_io
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$QEMU_IMG rebase -c -f $IMGFMT -b "" "$TEST_IMG"
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$QEMU_IO -c "read -P 0xaa 0 $(( CLUSTER_SIZE / 2 - 1 ))" "$TEST_IMG" \
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| _filter_qemu_io
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$QEMU_IO -c \
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"read -P 0x00 $(( CLUSTER_SIZE / 2 - 1 )) $(( CLUSTER_SIZE / 2 + 1 ))" \
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"$TEST_IMG" | _filter_qemu_io
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$QEMU_IMG check "$TEST_IMG" | _filter_testdir
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# success, all done
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echo
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echo '*** done'
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rm -f $seq.full
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status=0
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