Re: [Qemu-devel] [PATCH 13/18] nbd: Support shorter handshake

[Eric Blake]

On 04/09/2016 04:42 AM, Alex Bligh wrote:
> 
> On 8 Apr 2016, at 23:05, Eric Blake <address@hidden> wrote:
> 
>> The NBD Protocol allows the server and client to mutually agree
>> on a shorter handshake (omit the 124 bytes of reserved 0), via
>> the server advertising NBD_FLAG_NO_ZEROES and the client
>> acknowledging with NBD_FLAG_C_NO_ZEROES (only possible in
>> newstyle, whether or not it is fixed newstyle).  It doesn't
>> shave much off the wire, but we might as well implement it.
>>
>> Signed-off-by: Eric Blake <address@hidden>
> 
> 
> Reviewed-by: Alex Bligh <address@hidden>
> 
> thanks - that was annoying me.
> 

It turns out that doing this also made the NBD_OPT_GO patches easier :)

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

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