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). 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) Best regards, Kevin On Wed, Apr 10, 2013 at 4:09 PM, Serge Hallyn <serge.hal...@ubuntu.com> wrote: > Quoting Kevin Wilson (wkev...@gmail.com): >> Hello, lxc-users gurus, >> >> cgroup question: >> Is it permitted to run this cgroup sequence: >> >> mount -t tmpfs cgroup_root /cgroup1 >> mount -t tmpfs cgroup_root /cgroup2 >> >> And then try to create and mount subsystems to /cgroup1 and /cgroup2? >> >> or is permitted to mount cgroup_root only once ? > > cgroup_root is just an arbitrary name on a tmpfs mount. It has nothing > to do with the actual cgroup filesystems. It's the later steps which > matter > (i.e. mkdir /cgroup1/freezer; mount -t cgroupfs -o freezer freezer > /cgroup1/freezer), > but you don't show them here. > >> I don't have any error with mounting twice cgroup_root, but i get error >> later >> when trying to mount cpuset (for example) on /cgroup2 >> >> rgs, >> Kevin >> >> >> Or is the >> >> ------------------------------------------------------------------------------ >> 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 ------------------------------------------------------------------------------ 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
