Hi, The recent update of packages made lxc malfunction. Unable to start containers.I have also noted that "Input/ouput Error" in /var/lib/lxcfs directory. I dont think this is disk IO issue as this can reproduced. I do have a VM with debian-bullseye-DI-alpha3-amd64-DVD-1.iso. I was able create a lxc container there and it worked fine. However when I upgraded to the latest packages I can see the same problem there.
Unable to find the package causing the problem. However I can see lxcfs reporting IO error. I assume cgroupv2 is not getting mounting properly. I also see /sys/fs/cgroup/unified doesnt get mounted. Error ====== Output of lxc-start [ --logfile with --logpriority used ] lxc-start $servername 20210110050338.110 ERROR cgfsng - cgroups/cgfsng.c:__cgfsng_delegate_controllers:3091 - Device or resource busy - Could not enable "+memory +pids" controllers in the unified cgroup "/sys/fs/cgroup/user.slice/user-1000.slice/user@1000.service/app.slice/ app-org.gnome.Terminal.slice/vte-spawn-4a7e535f-f58e-44f0-a6dc- 9f85d15cd939.scope/cgroup.subtree_control" $user:/var/lib/lxcfs$ ls -ltr ls: cannot access 'cgroup': Input/output error total 0 ?????????? ? ? ? ? ? cgroup dr-xr-xr-x 2 root root 0 Jan 11 10:59 proc dr-xr-xr-x 2 root root 0 Jan 11 10:59 sys System Information ================== $uname -a Linux $$$$$$ 5.10.0-1-amd64 #1 SMP Debian 5.10.4-1 (2020-12-31) x86_64 GNU/Linux lsb_release -a No LSB modules are available. Distributor ID: Debian Description: Debian GNU/Linux bullseye/sid Release: testing Codename: bullseye $ apt list lxc Listing... Done lxc/testing,now 1:4.0.5-2 amd64 [installed] $apt list liblxc1 Listing... Done liblxc1/testing,now 1:4.0.5-2 amd64 [installed,automatic] $apt list lxcfs Listing... Done lxcfs/testing,now 4.0.5-1 amd64 [installed] $apt list libpam-cgfs Listing... Done libpam-cgfs/testing,now 1:4.0.5-2 amd64 [installed] apt list systemd Listing... Done systemd/testing,now 247.2-4 amd64 [installed] $apt list libpam-systemd Listing... Done libpam-systemd/testing,now 247.2-4 amd64 [installed] $ lxc-checkconfig LXC version 4.0.5 Kernel configuration not found at /proc/config.gz; searching... Kernel configuration found at /boot/config-5.10.0-1-amd64 --- Namespaces --- Namespaces: enabled Utsname namespace: enabled Ipc namespace: enabled Pid namespace: enabled User namespace: enabled Network namespace: enabled --- Control groups --- Cgroups: enabled Cgroup v1 mount points: Cgroup v2 mount points: /sys/fs/cgroup Cgroup v1 systemd controller: missing Cgroup v1 freezer controller: missing Cgroup namespace: required Cgroup device: enabled Cgroup sched: enabled Cgroup cpu account: enabled Cgroup memory controller: enabled Cgroup cpuset: enabled --- Misc --- Veth pair device: enabled, not loaded Macvlan: enabled, not loaded Vlan: enabled, not loaded Bridges: enabled, loaded Advanced netfilter: enabled, loaded CONFIG_NF_NAT_IPV4: missing CONFIG_NF_NAT_IPV6: missing CONFIG_IP_NF_TARGET_MASQUERADE: enabled, not loaded CONFIG_IP6_NF_TARGET_MASQUERADE: enabled, not loaded CONFIG_NETFILTER_XT_TARGET_CHECKSUM: enabled, loaded CONFIG_NETFILTER_XT_MATCH_COMMENT: enabled, not loaded FUSE (for use with lxcfs): enabled, loaded --- Checkpoint/Restore --- checkpoint restore: enabled CONFIG_FHANDLE: enabled CONFIG_EVENTFD: enabled CONFIG_EPOLL: enabled CONFIG_UNIX_DIAG: enabled CONFIG_INET_DIAG: enabled CONFIG_PACKET_DIAG: enabled CONFIG_NETLINK_DIAG: enabled File capabilities: Note : Before booting a new kernel, you can check its configuration usage : CONFIG=/path/to/config /usr/bin/lxc-checkconfig $ mount | grep -i cgroup cgroup2 on /sys/fs/cgroup type cgroup2 (rw,nosuid,nodev,noexec,relatime) _______________________________________________ lxc-devel mailing list lxc-devel@lists.linuxcontainers.org http://lists.linuxcontainers.org/listinfo/lxc-devel
