iotests: add tests for "qemu-img rebase" with compression
The test cases considered so far: 314 (new test suite): 1. Check that compression mode isn't compatible with "-f raw" (raw format doesn't support compression). 2. Check that rebasing an image onto no backing file preserves the data and writes the copied clusters actually compressed. 3. Same as 2, but with a raw backing file (i.e. the clusters copied from the backing are originally uncompressed -- we check they end up compressed after being merged). 4. Remove a single delta from a backing chain, perform the same checks as in 2. 5. Check that even when backing and overlay are initially uncompressed, copied clusters end up compressed when rebase with compression is performed. 271: 1. Check that when target image has subclusters, rebase with compression will make an entire cluster containing the written subcluster compressed. Signed-off-by: Andrey Drobyshev <andrey.drobyshev@virtuozzo.com> Reviewed-by: Hanna Czenczek <hreitz@redhat.com> Message-ID: <20230919165804.439110-9-andrey.drobyshev@virtuozzo.com> Reviewed-by: Kevin Wolf <kwolf@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Andrey Drobyshev
Kevin Wolf
parent
26ea27898b
commit
87fe52ceca
@ -965,6 +965,71 @@ echo
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TEST_IMG="$TEST_IMG.top" alloc="1 30" zero="" _verify_l2_bitmap 0
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TEST_IMG="$TEST_IMG.top" alloc="1 30" zero="" _verify_l2_bitmap 0
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# Check that rebase with compression works correctly with images containing
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# subclusters. When compression is enabled and we allocate a new
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# subcluster within the target (overlay) image, we expect the entire cluster
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# containing that subcluster to become compressed.
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#
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# Here we expect 1st and 3rd clusters of the top (overlay) image to become
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# compressed after the rebase, while cluster 2 to remain unallocated and
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# be read from the base (new backing) image.
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#
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# Base (new backing): |-- -- .. -- --|11 11 .. 11 11|-- -- .. -- --|
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# Mid (old backing): |-- -- .. -- 22|-- -- .. -- --|33 -- .. -- --|
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# Top: |-- -- .. -- --|-- -- -- -- --|-- -- .. -- --|
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echo
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echo "### Rebase with compression for images with subclusters ###"
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echo
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echo "# create backing chain"
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echo
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TEST_IMG="$TEST_IMG.base" _make_test_img -o cluster_size=1M,extended_l2=on 3M
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TEST_IMG="$TEST_IMG.mid" _make_test_img -o cluster_size=1M,extended_l2=on \
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-b "$TEST_IMG.base" -F qcow2 3M
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TEST_IMG="$TEST_IMG.top" _make_test_img -o cluster_size=1M,extended_l2=on \
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-b "$TEST_IMG.mid" -F qcow2 3M
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echo
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echo "# fill old and new backing with data"
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echo
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$QEMU_IO -c "write -P 0x11 1M 1M" "$TEST_IMG.base" | _filter_qemu_io
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$QEMU_IO -c "write -P 0x22 $(( 31 * 32 ))k 32k" \
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-c "write -P 0x33 $(( 64 * 32 ))k 32k" \
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"$TEST_IMG.mid" | _filter_qemu_io
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echo
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echo "# rebase topmost image onto the new backing, with compression"
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echo
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$QEMU_IMG rebase -c -b "$TEST_IMG.base" -F qcow2 "$TEST_IMG.top"
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echo "# verify that the 1st and 3rd clusters've become compressed"
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echo
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$QEMU_IMG map --output=json "$TEST_IMG.top" | _filter_testdir
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echo
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echo "# verify that data is read the same before and after rebase"
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echo
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$QEMU_IO -c "read -P 0x22 $(( 31 * 32 ))k 32k" \
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-c "read -P 0x11 1M 1M" \
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-c "read -P 0x33 $(( 64 * 32 ))k 32k" \
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"$TEST_IMG.top" | _filter_qemu_io
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echo
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echo "# verify image bitmap"
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echo
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# For compressed clusters bitmap is always 0. For unallocated cluster
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# there should be no entry at all, thus bitmap is also 0.
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TEST_IMG="$TEST_IMG.top" alloc="" zero="" _verify_l2_bitmap 0
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TEST_IMG="$TEST_IMG.top" alloc="" zero="" _verify_l2_bitmap 1
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TEST_IMG="$TEST_IMG.top" alloc="" zero="" _verify_l2_bitmap 2
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# success, all done
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# success, all done
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echo "*** done"
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echo "*** done"
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rm -f $seq.full
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rm -f $seq.full
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@ -765,4 +765,44 @@ Offset Length Mapped to File
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# verify image bitmap
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# verify image bitmap
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L2 entry #0: 0x8000000000500000 0000000040000002
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L2 entry #0: 0x8000000000500000 0000000040000002
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### Rebase with compression for images with subclusters ###
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# create backing chain
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Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=3145728
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Formatting 'TEST_DIR/t.IMGFMT.mid', fmt=IMGFMT size=3145728 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
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Formatting 'TEST_DIR/t.IMGFMT.top', fmt=IMGFMT size=3145728 backing_file=TEST_DIR/t.IMGFMT.mid backing_fmt=IMGFMT
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# fill old and new backing with data
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wrote 1048576/1048576 bytes at offset 1048576
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1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 32768/32768 bytes at offset 1015808
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32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 32768/32768 bytes at offset 2097152
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32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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# rebase topmost image onto the new backing, with compression
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# verify that the 1st and 3rd clusters've become compressed
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[{ "start": 0, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true},
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{ "start": 1048576, "length": 1048576, "depth": 1, "present": true, "zero": false, "data": true, "compressed": false, "offset": 5242880},
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{ "start": 2097152, "length": 1048576, "depth": 0, "present": true, "zero": false, "data": true, "compressed": true}]
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# verify that data is read the same before and after rebase
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read 32768/32768 bytes at offset 1015808
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32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 1048576/1048576 bytes at offset 1048576
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1 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 32768/32768 bytes at offset 2097152
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32 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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# verify image bitmap
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L2 entry #0: 0x4008000000500000 0000000000000000
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L2 entry #1: 0x0000000000000000 0000000000000000
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L2 entry #2: 0x400800000050040b 0000000000000000
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*** done
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*** done
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165
tests/qemu-iotests/314
Executable file
165
tests/qemu-iotests/314
Executable file
@ -0,0 +1,165 @@
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#!/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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$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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75
tests/qemu-iotests/314.out
Normal file
75
tests/qemu-iotests/314.out
Normal file
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QA output created by 314
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=== Testing compressed rebase format compatibility ===
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Formatting 'TEST_DIR/t.IMGFMT', fmt=raw size=50331648
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qemu-img: Compression not supported for this file format
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=== Testing rebase with compression onto no backing file ===
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Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=50331648
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=50331648 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
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wrote 25165824/25165824 bytes at offset 0
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24 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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wrote 25165824/25165824 bytes at offset 25165824
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24 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 25165824/25165824 bytes at offset 0
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24 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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read 25165824/25165824 bytes at offset 25165824
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24 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
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No errors were found on the image.
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768/768 = 100.00% allocated, 100.00% fragmented, 100.00% compressed clusters
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Image end offset: 458752
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=== Testing rebase with compression with raw backing file ===
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Formatting 'TEST_DIR/t.IMGFMT.base', fmt=raw size=25165824
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||||||
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Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=50331648 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=raw
|
||||||
|
wrote 25165824/25165824 bytes at offset 0
|
||||||
|
24 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
wrote 25165824/25165824 bytes at offset 25165824
|
||||||
|
24 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
read 25165824/25165824 bytes at offset 0
|
||||||
|
24 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
read 25165824/25165824 bytes at offset 25165824
|
||||||
|
24 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
No errors were found on the image.
|
||||||
|
768/768 = 100.00% allocated, 100.00% fragmented, 100.00% compressed clusters
|
||||||
|
Image end offset: 458752
|
||||||
|
|
||||||
|
=== Testing compressed rebase removing single delta from the chain ===
|
||||||
|
|
||||||
|
Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=50331648
|
||||||
|
Formatting 'TEST_DIR/t.IMGFMT.itmd', fmt=IMGFMT size=50331648 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
|
||||||
|
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=50331648 backing_file=TEST_DIR/t.IMGFMT.itmd backing_fmt=IMGFMT
|
||||||
|
wrote 16777216/16777216 bytes at offset 0
|
||||||
|
16 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
wrote 16777216/16777216 bytes at offset 16777216
|
||||||
|
16 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
wrote 16777216/16777216 bytes at offset 33554432
|
||||||
|
16 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
read 16777216/16777216 bytes at offset 0
|
||||||
|
16 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
read 16777216/16777216 bytes at offset 16777216
|
||||||
|
16 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
read 16777216/16777216 bytes at offset 33554432
|
||||||
|
16 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
No errors were found on the image.
|
||||||
|
512/768 = 66.67% allocated, 100.00% fragmented, 100.00% compressed clusters
|
||||||
|
Image end offset: 458752
|
||||||
|
|
||||||
|
=== Testing compressed rebase with unaligned unmerged data ===
|
||||||
|
|
||||||
|
Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=65536
|
||||||
|
Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=65536 backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
|
||||||
|
wrote 32767/32767 bytes at offset 0
|
||||||
|
31.999 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
read 32767/32767 bytes at offset 0
|
||||||
|
31.999 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
read 32769/32769 bytes at offset 32767
|
||||||
|
32.001 KiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
|
||||||
|
No errors were found on the image.
|
||||||
|
1/1 = 100.00% allocated, 100.00% fragmented, 100.00% compressed clusters
|
||||||
|
Image end offset: 393216
|
||||||
|
|
||||||
|
*** done
|
||||||
Loading…
Reference in New Issue
Block a user