On 11/07/2014 12:39 PM, Kevin Wolf wrote:
> This is forbidden if the raw driver was probed.
> 
> Signed-off-by: Kevin Wolf <kw...@redhat.com>
> ---
>  tests/qemu-iotests/109     | 100 ++++++++++++++++++++++++++++++
>  tests/qemu-iotests/109.out | 149 
> +++++++++++++++++++++++++++++++++++++++++++++
>  tests/qemu-iotests/group   |   1 +
>  3 files changed, 250 insertions(+)
>  create mode 100755 tests/qemu-iotests/109
>  create mode 100644 tests/qemu-iotests/109.out

Could you also add a test for writing an MBR/GRUB stage 1 sector into
the image?  Since that is a very common guest action on initial install
of an OS into a blank disk, and also should NEVER match one of our
probes (assuming we never add support for a file format that resembles
an MBR master sector), it would be nice to ensure that our restrictions
against writing to sector 0 only fire when actually hitting a colliding
probe, and not for all writes.  Likewise, maybe add a test for writing a
sector of all 0 or all FF.

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

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