Quoting Kevin Wilson (wkev...@gmail.com): > Hello, > Thanks a lot for your answer. > > I reproduced the problem: > this is what I run: (after boot, in Ubuntu 12.10) > > mount -t tmpfs cgroup_root /cgroup > > mkdir /cgroup/test1 > mount -t cgroup -o cpuset,devices mytest /cgroup/test1 > > And I get: > mount: mytest already mounted or /cgroup/test1 busy > > shouldn't it work ? > > I tried it on Ubuntu. > I was surprised to see that some cgroup contolkers are mounted > under /sys/fs/cgroup (though it seems to me that this should not cause > a problem).
It wouldn't cause a problem if you were mounting them separately, but you are asking for controllers to be bound together, which have already been separately mounted. That is not possible. So for instance mkdir /tmp/1 /tmp/2 /tmp/3 mount -t cgroup -o freezer /tmp/1 mount -t cgroup -o freezer /tmp/2 mount -t cgroup -o freezer /tmp/3 is ok, but mkdir /tmp/1 /tmp/2 /tmp/3 mount -t cgroup -o freezer /tmp/1 mount -t cgroup -o cpuset /tmp/2 mount -t cgroup -o cpuset,freezer /tmp/3 is not > systemd is not running on Ubuntu, I don't have any idea > who > mounted in boot time the /sys/fs/cgroup contollers and for which purpose > > mount | grep cgroup > gives: > cgroup on /sys/fs/cgroup type tmpfs (rw,relatime,mode=755) > cgroup on /sys/fs/cgroup/cpuset type cgroup (rw,relatime,cpuset) > cgroup on /sys/fs/cgroup/cpu type cgroup (rw,relatime,cpu) > cgroup on /sys/fs/cgroup/cpuacct type cgroup (rw,relatime,cpuacct) > cgroup on /sys/fs/cgroup/memory type cgroup (rw,relatime,memory) > cgroup_root on /cgroup type tmpfs (rw) look for a cgroup related package, or lines in your fstab: dpkg -l | grep cgroup grep cgroup /etc/fstab -serge ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis & visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter _______________________________________________ Lxc-users mailing list Lxc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/lxc-users
