On 07/29/2014 06:41 AM, Stefan Hajnoczi wrote:
> This test case covers the basic bdrv_aio_multiwrite() scenarios:
> 1. Single request
> 2. Sequential requests
> 3. Overlapping requests
> 4. Disjoint requests
> 
> Signed-off-by: Stefan Hajnoczi <stefa...@redhat.com>
> ---

> +echo
> +echo "== Overlapping requests =="
> +_make_test_img $size
> +$QEMU_IO -c "multiwrite 0 4k ; 1k 2k" "$TEST_IMG" | _filter_qemu_io
> +

This only tests superset overlap:

AAAA
 BB

Wouldn't it be good to also test head overlap, tail overlap, and subset
overlap, as in:

AAA
  BB

 AAA
BB

 AA
BBBB


-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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