On Tue, 09.04.13 16:39, Kevin Wilson (wkev...@gmail.com) wrote: > Hello, > On Fedora 18, running: > mount | grep release > gives: > cgroup on /sys/fs/cgroup/systemd type cgroup > (rw,nosuid,nodev,noexec,relatime,release_agent=/usr/lib/systemd/systemd-cgroups-agent,name=systemd) > > I know and have tried cgroup release_agent; > > I also noticed that notify_on_release is enabled in systemd cgroups: > cat /sys/fs/cgroup/systemd/notify_on_release > gives 1 > (also in the children, user and system cgroups) > > what does /usr/lib/systemd/systemd-cgroups-agent do ? what it is for ? > What does it do when it is invoked ?
it's how the kernel notifies about cgroups running empty. The kernel forks the specified binary out. We install a binary there that simply sends a message on the bus about the cgroup running empty. It's an awful kernel API, but the only one there is for this. Lennart -- Lennart Poettering - Red Hat, Inc. _______________________________________________ systemd-devel mailing list systemd-devel@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/systemd-devel
