Messages in this thread | | | Subject | Re: [PATCHSET block/for-next] IO cost model based work-conserving porportional controller | From | Paolo Valente <> | Date | Tue, 20 Aug 2019 12:48:09 +0200 |
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> Il giorno 14 giu 2019, alle ore 19:56, Tejun Heo <tj@kernel.org> ha scritto: > > On Thu, Jun 13, 2019 at 06:56:10PM -0700, Tejun Heo wrote: > ... >> The patchset is also available in the following git branch. >> >> git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-iow > > Updated patchset available in the following branch. Just build fixes > and cosmetic changes for now. > > git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup.git review-iow-v2 >
Hi Tejun, I'm running the kernel in your tree above, in an Ubuntu 18.04.
After unmounting the v1 blkio controller that gets mounted at startup I have created v2 root as follows
$ mount -t cgroup2 none /cgroup
Then I have: $ ls /cgroup cgroup.controllers cgroup.max.descendants cgroup.stat cgroup.threads io.weight.cost_model system.slice cgroup.max.depth cgroup.procs cgroup.subtree_control init.scope io.weight.qos user.slice
But the following command gives no output: $ cat /cgroup/io.weight.qos
And, above all, $ echo 1 > /cgroup/io.weight.qos bash: echo: write error: Invalid argument
No complain in the kernel log.
What am I doing wrong? How can I make the controller work?
Thanks, Paolo
> Thanks. > > -- > tejun
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