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

From: Josef Bacik
Date: Fri Oct 07 2016 - 16:45:04 EST

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.

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?

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