FWIW this is affecting me on jammy too. I'll have to take a look at systemd sources. Adding:
lxc.init.cmd = /sbin/init systemd.unified_cgroup_hierarchy to my config does not help, nor does bind mounting a /proc/filesystems without 'cgroup' (v1) in it. -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to lxc in Ubuntu. https://bugs.launchpad.net/bugs/1917187 Title: lxc cgroup2: containers unbootable Status in lxc package in Ubuntu: Invalid Bug description: Distributor ID: Ubuntu Description: Ubuntu 20.04.2 LTS Release: 20.04 Codename: focal If one sets in /etc/default/grub (as e.g. desired by facebook oomd): GRUB_CMDLINE_LINUX="systemd.unified_cgroup_hierarchy=1 swapaccount=1 ..." lxc is not able to start any containers anymore. # lxc-start -F n04-01 lxc-start: n04-01: conf.c: lxc_setup_boot_id: 3249 Permission denied - Failed to mount /dev/.lxc-boot-id to /proc/sys/kernel/random/boot_id Failed to mount cgroup at /sys/fs/cgroup/systemd: Operation not permitted [!!!!!!] Failed to mount API filesystems. Exiting PID 1... config: ------- # Common configuration lxc.include = /usr/share/lxc/config/ubuntu.common.conf # Container specific configuration lxc.apparmor.profile = lxc-default-cgns-with-mounting lxc.start.auto = 1 lxc.rootfs.path = dir:/zones/n04-01/rootfs lxc.rootfs.options = noatime lxc.mount.fstab = /zones/n04-01/fstab lxc.uts.name = n04-01 lxc.arch = amd64 # Network configuration lxc.net.0.type = macvlan lxc.net.0.macvlan.mode = bridge lxc.net.0.flags = up lxc.net.0.link = vlan2 lxc.net.0.hwaddr = 00:80:41:22:0d:10 lxc.net.0.name = n04-01_0 #lxc.include = /zones/n04-01/nvconfig lxc.start.order = 16 #lxc.net.0.ipv4 = 10.2.1.65/16 #lxc.net.0.ipv4.gateway = 10.2.0.1 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1917187/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp
