Tested-by: Claudio Fontana <cfont...@suse.de>
On 7/28/20 2:08 PM, Max Reitz wrote:
> Signed-off-by: Max Reitz <mre...@redhat.com>
> ---
> tests/qemu-iotests/028 | 19 +++++++++++++++++++
> tests/qemu-iotests/028.out | 11 +++++++++++
> 2 files changed, 30 insertions(+)
>
> diff --git a/tests/qemu-iotests/028 b/tests/qemu-iotests/028
> index 5d043cef92..6dd3ae09a3 100755
> --- a/tests/qemu-iotests/028
> +++ b/tests/qemu-iotests/028
> @@ -142,6 +142,25 @@ TEST_IMG="${TEST_IMG}.copy" io_zero readv $(( offset +
> 32 * 1024 )) 512 1024 32
>
> _check_test_img
>
> +echo
> +echo '=== Reading across backing EOF in one operation ==='
> +echo
> +
> +# Use a cluster boundary as the base end here
> +base_size=$((3 * 1024 * 1024 * 1024))
> +
> +TEST_IMG="$TEST_IMG.base" _make_test_img $base_size
> +_make_test_img -b "$TEST_IMG.base" -F $IMGFMT $image_size
> +
> +# Write 16 times 42 at the end of the base image
> +$QEMU_IO -c "write -P 42 $((base_size - 16)) 16" "$TEST_IMG.base" \
> + | _filter_qemu_io
> +
> +# Read 32 bytes across the base EOF from the top;
> +# should be 16 times 0x2a, then 16 times 0x00
> +$QEMU_IO -c "read -v $((base_size - 16)) 32" "$TEST_IMG" \
> + | _filter_qemu_io
> +
> # success, all done
> echo "*** done"
> rm -f $seq.full
> diff --git a/tests/qemu-iotests/028.out b/tests/qemu-iotests/028.out
> index 12f82c6a6c..5a68de5c46 100644
> --- a/tests/qemu-iotests/028.out
> +++ b/tests/qemu-iotests/028.out
> @@ -730,4 +730,15 @@ read 512/512 bytes at offset 3221257728
> read 512/512 bytes at offset 3221258752
> 512 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> No errors were found on the image.
> +
> +=== Reading across backing EOF in one operation ===
> +
> +Formatting 'TEST_DIR/t.IMGFMT.base', fmt=IMGFMT size=3221225472
> +Formatting 'TEST_DIR/t.IMGFMT', fmt=IMGFMT size=4294968832
> backing_file=TEST_DIR/t.IMGFMT.base backing_fmt=IMGFMT
> +wrote 16/16 bytes at offset 3221225456
> +16 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> +bffffff0: 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a 2a ................
> +c0000000: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................
> +read 32/32 bytes at offset 3221225456
> +32 bytes, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
> *** done
>
