Re: [PATCH][V2] nbd: add multi-connection support

[Josef Bacik]

On 10/07/2016 02:36 PM, Pavel Machek wrote:
> On Thu 2016-09-15 10:43:54, Josef Bacik wrote:
> > NBD can become contended on its single connection.  We have to serialize all
> > writes and we can only process one read response at a time.  Fix this by
> > allowing userspace to provide multiple connections to a single nbd device.  This
> > coupled with block-mq drastically increases performance in multi-process cases.
> > Thanks,
> >
> > Signed-off-by: Josef Bacik <jbacik@xxxxxx>
>
> Idea is that it can now use multiple CPUs concurrently...?
>
> Do you have a diff for the nbd-server, too?
> 									Pavel

nbd-server doesn't need anything special, it just works.  I have a patch for 
nbd-client so you can open multiple connections to setup the NBD device.  You 
can find my patches for the userspace stuff here

https://github.com/josefbacik/nbd

Thanks,

Josef