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Re: [Nbd] [PATCH/RFC] Add support for NBD_CMD_WRITE_ZEROES



Eric,

On 15 Apr 2016, at 15:10, Eric Blake <eblake@...696...> wrote:

> I posted qemu patches a while back, but they need a refresh.

Those would be interesting.

> You completely ignore NBD_CMD_FLAG_NO_HOLE; you could obey that flag
> (when set, do the calloc() here; when cleared, call into the trim code
> if you can guarantee that you'll read zero after trims).  But if nothing
> else, you have a bug for not permitting the NBD_CMD_FLAG_NO_HOLE (even
> if you intend to ignore it by ALWAYS operating in no-hole mode, as was
> done here).

Thanks. I missed that.

--
Alex Bligh




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