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| author | Eric Blake <eblake@redhat.com> | 2016-05-25 21:48:48 -0600 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2016-06-08 10:21:08 +0200 |
| commit | 31ad4fdf914e86a2ea105ff3687a0f4dfc4802cb (patch) | |
| tree | bf833502e224e3f009d6bc15ca1eacf0da0b3ee0 /tests/qemu-iotests/154 | |
| parent | 5a64e9425160ace607b2043804d73d5579808bd3 (diff) | |
| download | qemu-31ad4fdf914e86a2ea105ff3687a0f4dfc4802cb.tar.gz | |
qemu-iotests: Test one more spot for optimizing write_zeroes
Add another test to 154, showing that we currently allocate a
data cluster in the top layer if any sector of the backing file
was allocated. The next patch will optimize this case.
Signed-off-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'tests/qemu-iotests/154')
| -rwxr-xr-x | tests/qemu-iotests/154 | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/tests/qemu-iotests/154 b/tests/qemu-iotests/154 index 23f1b3ab16..5905c55de9 100755 --- a/tests/qemu-iotests/154 +++ b/tests/qemu-iotests/154 @@ -115,6 +115,46 @@ $QEMU_IO -c "read -P 0 40k 3k" "$TEST_IMG" | _filter_qemu_io $QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map echo +echo == write_zeroes covers non-zero data == + +CLUSTER_SIZE=512 TEST_IMG="$TEST_IMG.base" _make_test_img $size +_make_test_img -b "$TEST_IMG.base" + +# non-zero data at front of request +# Backing file: -- XX -- -- +# Active layer: -- 00 00 -- + +$QEMU_IO -c "write -P 0x11 5k 1k" "$TEST_IMG.base" | _filter_qemu_io +$QEMU_IO -c "write -z 5k 2k" "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c "read -P 0 4k 4k" "$TEST_IMG" | _filter_qemu_io + +# non-zero data at end of request +# Backing file: -- -- XX -- +# Active layer: -- 00 00 -- + +$QEMU_IO -c "write -P 0x11 14k 1k" "$TEST_IMG.base" | _filter_qemu_io +$QEMU_IO -c "write -z 13k 2k" "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c "read -P 0 12k 4k" "$TEST_IMG" | _filter_qemu_io + +# non-zero data matches size of request +# Backing file: -- XX XX -- +# Active layer: -- 00 00 -- + +$QEMU_IO -c "write -P 0x11 21k 2k" "$TEST_IMG.base" | _filter_qemu_io +$QEMU_IO -c "write -z 21k 2k" "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c "read -P 0 20k 4k" "$TEST_IMG" | _filter_qemu_io + +# non-zero data smaller than request +# Backing file: -- -X X- -- +# Active layer: -- 00 00 -- + +$QEMU_IO -c "write -P 0x11 30208 1k" "$TEST_IMG.base" | _filter_qemu_io +$QEMU_IO -c "write -z 29k 2k" "$TEST_IMG" | _filter_qemu_io +$QEMU_IO -c "read -P 0 28k 4k" "$TEST_IMG" | _filter_qemu_io + +$QEMU_IMG map --output=json "$TEST_IMG" | _filter_qemu_img_map + +echo echo == spanning two clusters, non-zero before request == CLUSTER_SIZE=512 TEST_IMG="$TEST_IMG.base" _make_test_img $size |