Hi all,
We need to throttle the O_DIRECT IO on data and metadata device
of a dm-thin pool and encounter some problems. If we set the
limitation on the root blkcg, the throttle works. If we set the
limitation on a child blkcg, the throttle doesn't work well.
The reason why the throttle doesn't wor
Hou Tao writes:
> Hi all,
>
> We need to throttle the O_DIRECT IO on data and metadata device
> of a dm-thin pool and encounter some problems. If we set the
> limitation on the root blkcg, the throttle works. If we set the
> limitation on a child blkcg, the throttle doesn't work well.
>
> The rea
On Fri, Jan 20 2017 at 10:19am -0500,
Jeff Moyer wrote:
> Hou Tao writes:
>
> > Hi all,
> >
> > We need to throttle the O_DIRECT IO on data and metadata device
> > of a dm-thin pool and encounter some problems. If we set the
> > limitation on the root blkcg, the throttle works. If we set the
>
On Fri, Jan 20, 2017 at 10:19:22AM -0500, Jeff Moyer wrote:
> Hou Tao writes:
>
> > Hi all,
> >
> > We need to throttle the O_DIRECT IO on data and metadata device
> > of a dm-thin pool and encounter some problems. If we set the
> > limitation on the root blkcg, the throttle works. If we set the
