Re: [PATCH RESEND 0/5] Add vhost-blk support

From: Asias He
Date: Mon Jul 16 2012 - 05:03:23 EST

Hi Christoph,

On 07/14/2012 03:49 PM, Christoph Hellwig wrote:
Please send a version that does direct block I/O similar to xen-blkback
for now.

Seems xen-blkback converts the guest IO request to host bio and submit them directly. I was wondering whether this has a performance gain compared to AIO implementation.

If we get proper in-kernel aio support one day you can add
back file backend support.

I talked with Dave and Zack on the in-kernel aio patch which James pointed out:

Dave will post a new version soon. I will wait for it.


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