On Fri, Oct 24, 2014 at 11:54 AM, Alexandre DERUMIER
<[email protected]> wrote:
> Hi,
>
> I would like to known if it's planned to add blk-mq (block multiqueue from
> kernel 3.17) support to krbd ?
>
> I think it could help single threaded workload (including qemu) to reach more
> iops.
>
> I find some small discussion about it here:
> http://permalink.gmane.org/gmane.comp.file-systems.ceph.devel/20584
>
> But no news since then.
There are no concrete plans as of now. For 3.19 and 3.20 the main goal
is to get fancy striping (support for custom striping modes) in and
then get rid of "kernel layering is EXPERIMENTAL!" warning.
krbd is a network block device, so I don't think we will gain anything
significant in the performance department. blk-mq was mentioned
because it lifts some of the implementation restrictions the current
infrastructure imposes on drivers.
Thanks,
Ilya
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