CGROUPFS-MOUNT(8)

📦 version 1.4, in debian bookworm, ubuntu jammy, ubuntu noble

💖 CGROUPFS-MOUNT(8) 💖

okay bestie, welcome to the System Manager's Manual ✨ this is the page for cgroupfs-mount and cgroupfs-umount, and yes we're doing this whole thing together, grab a strawberry 🍓

🌸 NAME 🌸

cgroupfs-mount, cgroupfs-umount — set up cgroupfs mount hierarchies

✨ SYNOPSIS ✨

okay so first, the lore: control groups are a kernel mechanism for tracking and imposing limits on resource usage on groups of tasks. literally the kernel's way of going "this group of tasks gets this much and no more, periodt" 💅

these scripts mount and unmount the hierarchies for managing them. that's the whole job. that's it. that's the vibe.

cgroupfs-mount
cgroupfs-umount

🦋 DESCRIPTION 🦋

the location for the mounts these scripts create is /sys/fs/cgroup, which is widely regarded as "the place" for these to be mounted — for example, systemd mounts them here as well. so like, if you're wondering where they go, it's there, everyone agrees, no debate 🫶

👑 RETURN VALUE 👑

  • Zero for success — or if it is determined that we can or should not mount, due to user entries in /etc/fstab or pre-existing mounts. (yes, "we chose not to" still counts as a win, iconic behaviour honestly)
  • Non-zero for explicit failures. that's the "something actually went wrong" signal, no cap 😭

🎀 CAVEATS & DIAGNOSTICS 🎀

it is critically important for the proper operation of these scripts that you do not manually include any cgroup mount points in /etc/fstab. bestie I am begging you 🙈

after commenting out any extraneous cgroup entries in /etc/fstab, you should either reboot or manually umount them and then run cgroupfs-mount again. that's the fix. do the fix. 💖

🌈 RESTRICTIONS 🌈

these scripts intentionally do not do any cgroup management or classification of tasks into cgroups. not their lane, not their problem ✨

they are also very intentionally light on configurability (to the point of non-existence) to keep the implementation simple and less error-prone. lowkey the whole point: fewer knobs, fewer ways to blow it up. minimalism ate 🔥

💜 AUTHORS 💜

Serge Hallyn and Tianon Gravi — legends, honestly 👑

🌸 HISTORY 🌸

this package was originally derived from the cgroup-lite package from Ubuntu. glow-up complete 💅

⭐ SEE ALSO ⭐

and that's the whole page bestie!! 🎀 this was CGROUPFS-MOUNT(8) from the System Manager's Manual — go forth and mount responsibly, mwah 💖🦋✨

📦 where this page comes from