The cpuset "error" is normal, it just means the directory was already
there and is getting recycled. The boot_id permission problem has
already been fixed upstream.
** Changed in: lxc (Ubuntu)
Status: New => Fix Committed
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https://bugs.launchpad.net/bugs/1891903
Title:
"File exists" error while starting container
Status in lxc package in Ubuntu:
Fix Committed
Bug description:
On a freshly installed Ubuntu 20.04.1 VM, while starting a container
created using
sudo lxc-create -t ubuntu -n testlxc
the following messages are shown:
lxc-start: testlxc: cgroups/cgfsng.c: mkdir_eexist_on_last: 1143 File exists
- Failed to create directory "/sys/fs/cgroup/cpuset//lxc.monitor.testlxc"
lxc-start: testlxc: conf.c: lxc_setup_boot_id: 3249 Permission denied -
Failed to mount /dev/.lxc-boot-id to /proc/sys/kernel/random/boot_id
The container starts correctly but it would be nice find out why those
errors are being issued.
lxc-checkconfig output follows:
Kernel configuration not found at /proc/config.gz; searching...
Kernel configuration found at /boot/config-5.4.0-42-generic
--- 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:
/sys/fs/cgroup/systemd
/sys/fs/cgroup/hugetlb
/sys/fs/cgroup/cpuset
/sys/fs/cgroup/memory
/sys/fs/cgroup/cpu,cpuacct
/sys/fs/cgroup/net_cls,net_prio
/sys/fs/cgroup/blkio
/sys/fs/cgroup/perf_event
/sys/fs/cgroup/pids
/sys/fs/cgroup/freezer
/sys/fs/cgroup/devices
/sys/fs/cgroup/rdma
Cgroup v2 mount points:
/sys/fs/cgroup/unified
Cgroup v1 clone_children flag: enabled
Cgroup device: enabled
Cgroup sched: enabled
Cgroup cpu account: enabled
Cgroup memory controller: enabled
Cgroup cpuset: enabled
--- Misc ---
Veth pair device: enabled, loaded
Macvlan: enabled, not loaded
Vlan: enabled, not loaded
Bridges: enabled, loaded
Advanced netfilter: enabled, not 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, not 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
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