On 2/15/19 7:02 AM, Lennart Poettering wrote: > On Fr, 15.02.19 12:55, Zygmunt Krynicki (me@xxxxxxxxx) wrote: > >> I’m happy to work on this issue once it becomes „pressing” and once >> the prerequisites are available. If F30 disables v1 entirely and has >> a kernel where we can get device, freezer and pid controllers then >> it’s „just” a matter of coding. > The kernel will support both modes for a long time I figure. And so > will systemd. You can switch between both modes at boot time through a > kernel cmdline option, and the change for F30 would be to just default > to a different setting. This is for F31 NOT F30. > > Note that in cgroupsv2 mode systemd will not mount the cgroupv1 > hierchies at all. (You can mount them yourself if you want to > though. For example, systemd-nspawn can optionally provide cgroupsv1 > to container payloads on cgroupsv2 hosts, by simply mounting the > name=systemd hierarchy into the container anyway) > > The "devices" cgroup controller is generally not available on > cgroupsv2. However, there's now a set of bpf hook-ups that you can use > instead and provide pretty much equivalent functionality. (systemd > supports them already). Awesome. > The "freezer" cgroup controller is not available yet on cgroupsv2. But > this is likely going to change soon, but it will be core cgroupsv2 > functionality, not a controller of its own. Until the freezer becomes > available it should be completely fine to simply use SIGSTOP instead, > semantics are not thaaaaat different. Yes I was told that it just missed getting into the 5.0 kernel, and should be in the 5.1 kernel. > The "pids" controllers has been available on cgroupsv2 since day one > basically, at the same day it was introduced for cgroupsv1. > > Lennart > > -- > Lennart Poettering, Red Hat _______________________________________________ devel mailing list -- devel@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to devel-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://getfedora.org/code-of-conduct.html List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/devel@xxxxxxxxxxxxxxxxxxxxxxx
