[Devel] Re: cgroup tasks file error

[Serge E. Hallyn]

Quoting ccmail111 (ccmail111 at yahoo.com):
> 
> I see error:[host:/dev/cgroup]$ echo 693 > hello-test/tasks
> -bash: echo: write error: No space left on device
> [host:/dev/cgroup]$ pwd/dev/cgroup
> 
> But the user process is up and running..
> 
> [host:/dev/cgroup]$ ps aux | grep procroot       
> 
> 693  0.0  0.4  34720  1112 ttyS0    Sl   19:11   0:00 /opt/bin/myproc -ext
> 
> Also the cgroup exists and valid..
> 
> [host:/dev/cgroup]$ ls | grep hello-test
> hello-test
> 
> What above error mean and any suggestions ?
> Please email.

Which cgroups do you have composed on that mount?  I'm guess you
have cpuset, and you need to set the cpuset.mems and cpuset.cpus.
Until you do that, no tasks can be assigned to it.

-serge
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