[Libguestfs] [PATCH] api: add_drive - add QEMU detect-zeroes support

[Richard W.M. Jones]

On Thu, Apr 09, 2015 at 04:34:25PM +0200, Maros Zatko wrote:
> See: https://lists.gnu.org/archive/html/qemu-devel/2012-07/msg03747.html
> Related do RHBZ#1130506.
> +    style = RErr, [String "filename"], [OBool "readonly"; OString "format"; OString "iface"; OString "name"; OString "label"; OString "protocol"; OStringList "server"; OString "username"; OString "secret"; OString "cachemode"; OString "discard"; OBool "copyonread"; OBool "detectzeros"];
[...]
> +  bool detectzeros;

Currently qemu allows detectzeroes to be off / on / unmap.  Should we
allow the unmap option too?  (cf. the discard option)

Rich.

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