Re: [PATCH] block: BFQ default for single queue devices

Bart Van Assche
2018-10-03T14:58:52Z

On Wed, 2018-10-03 at 05:51 -0700, Christoph Hellwig wrote:
> On Wed, Oct 03, 2018 at 07:42:15AM +0000, Damien Le Moal wrote:
> > Of note also is that host-managed like sequential zone devices are also likely
> > to show up soon with the work being done in the NVMe standard on the new "Zoned
> > namespace" feature proposal. These devices will also require a scheduler like
> > mq-deadline guaranteeing per-zone in-order delivery of sequential write
> > requests. Looking only at the number of queues of the device is not enough to
> > choose the best (most reasonnable/appropriate) scheduler.
>
> We actually have a plan to avoid the need for a non-reordering scheduler
> there (including a Linux prototype for it). Lets see if it survives the
> committee.

Has the work with the T10 committee to standardize the SCSI equivalent of anonymous
writes already started?

Thanks,

Bart.