On 01/07/2014 02:36 AM, Darrick J. Wong wrote: > On Fri, Jan 03, 2014 at 03:03:42PM -0500, Martin K. Petersen wrote: >>>>>>> "Hannes" == Hannes Reinecke <hare@xxxxxxx> writes: >> >> Hannes> Personally, I doubt it's a good idea to kill it off, but a >> Hannes> proper (userland) API for it has been a long time missing. >> >> Before we throw the baby out with the bath water, maybe Darrick can fill >> us in on the progress of the aio passthrough interface? > > I haven't made much progress on it -- I haven't seen any earnest demand for it. > Of course not. Who should be demanding it? Application developer tend to code to existing interfaces. > Last year Chuck Lever said that some NFS working group was looking defining an > interface it... has there been any progress? It doesn't sound like there has > been. > Well, the point is that without any defined (userland) interface it's quite hard to pursuade any userland application developer to use it. Plus (as hch rightly pointed out) as there is no defined userland interface the question is why we bother with all the DIX stuff in the block layer. DIF support would be perfectly sufficient to cover any connectivity issues. And one feels _really_ silly trying to convince customers from the benefits of DIX they can't even use. I've tried that several times, and it doesn't get better over time... Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@xxxxxxx +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
