systemd and the Linux kernel
This comes up all too often, so here’s a HowTo for systemd on Exherbo:
- You have to run a Linux kernel >=2.6.39. The new kernel is only needed at runtime, not for building systemd.
- You should run a Linux kernel >=3.0. The new kernel is only needed at runtime, not for building systemd.
- Kernel options for systemd: In your kernel config, enable autofs4, devtmpfs and cgroups. Do not enable autofs3. Here’s what I’m using (I enable more kernel options than strictly necessary, though.):
CONFIG_DEVTMPFS=y (Strictly required!)
CONFIG_DEVTMPFS_MOUNT=y (unless you're using an initramfs that's mounting it for you, e. g. one created by Dracut)
# CONFIG_AUTOFS_FS is not set (Strictly required!)
CONFIG_AUTOFS4_FS=y (Strictly required!)
CONFIG_CGROUPS=y (Strictly required!)
# CONFIG_CGROUP_DEBUG is not set
CONFIG_CGROUP_NS=y
CONFIG_CGROUP_FREEZER=y
CONFIG_CGROUP_DEVICE=y
CONFIG_CGROUP_CPUACCT=y
# CONFIG_CGROUP_MEM_RES_CTLR is not set
CONFIG_CGROUP_SCHED=y
CONFIG_BLK_CGROUP=y
# CONFIG_DEBUG_BLK_CGROUP is not set
CONFIG_FANOTIFY=y (only used for readahead stuff which is not enabled by default.)
CONFIG_FANOTIFY_ACCESS_PERMISSIONS=y (only used for readahead stuff which is not enabled by default.)
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