> Il giorno 14 giu 2019, alle ore 19:56, Tejun Heo <[email protected]> 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
