On Thu, Sep 03, 2020 at 03:27:37PM +0100, Ben Green wrote: > Hi all, > > We are starting to use LXC in production here, after solving our final > problem (inconsistent and disappearing cgroup space - Thread name > "Disappearing Cgroups" on this list) completely with the help of Serge > E. Hallyn. > > Now something odd has come up. I have one server on the Debian kernel > 4.19.0-9-amd64 and another on 4.19.0-10-amd64. On the 4.19.0-9-amd64 > kernel we cat this: > > # cat /sys/fs/cgroup/cpuset/forcontainers/tasks > 1216 > 5065 > 12372 > etc. > > But on the other one with the 4.19.0-10-amd64 we get this: > > # cat /sys/fs/cgroup/cpuset/forcontainers/tasks > > No output! Also on the 4.19.0-10-amd64 machine it is not possible to add > to the list of tasks: > > # echo $$ >> /sys/fs/cgroup/cpuset/forcontainers/tasks > -bash: echo: write error: No space left on device
That usually indicates that cpuset.cpus and/or cpuset.mems is empty and that cgroup.clone_children in the parent cgroup isn't set to 1. LXC should usually take care of this though. Christian _______________________________________________ lxc-users mailing list lxc-users@lists.linuxcontainers.org http://lists.linuxcontainers.org/listinfo/lxc-users