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Diffstat (limited to 'tests/qemu-iotests/028')
| -rwxr-xr-x | tests/qemu-iotests/028 | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/tests/qemu-iotests/028 b/tests/qemu-iotests/028 index 5d043ce..6dd3ae0 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 |