> Il giorno 14 giu 2019, alle ore 19:56, Tejun Heo <tj@xxxxxxxxxx> 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
