systemd sets /sys/fs/cgroup/ as 'ro' filesystem

poelzi / ulatencyd

daemon to minimize latency on a linux system using cgroups

GNU General Public License v3.0

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systemd sets /sys/fs/cgroup/ as 'ro' filesystem #62

Closed tpruzina closed 10 years ago

tpruzina commented 10 years ago

http://cgit.freedesktop.org/systemd/systemd/commit/?id=679142ce4a8def7da43c4d3b2a02bae8c0d21175

Systemd since mentioned commit decided to mount /sys/fs/cgroup as read only (so userspace might fail to create for example /sys/fs/cgroup/freezer).

This breaks ulatencyd on my box.

NOTE1: commit message suggests they did it to work around glibc bug NOTE2: No, I don't suggest that ulatencyd devs should fix it by dirty hack

tpruzina commented 10 years ago

closing, systemd clasifies this as 'wontfix', and claim that appropriate dirs are created at boot (so if your kernel has support for freezer, it will be created by default). This does not happen on my setup, but it seems to be working on my virtual machines...