-1 is rv, errno is 22 EINVAL
The log:
lxc-start 40.086 INFO lxc_start_ui - lxc_start.c:main:264 -
using rcfile /containers/mycnt/config
lxc-start 40.087 INFO lxc_confile -
confile.c:config_idmap:1376 - read uid map: type u nsid 0 hostid 100000 range
65536
lxc-start 40.087 INFO lxc_confile -
confile.c:config_idmap:1376 - read uid map: type g nsid 0 hostid 100000 range
65536
lxc-start 40.087 WARN lxc_cgfs -
cgfs.c:lxc_cgroup_get_container_info:1100 - Not attaching to cgroup cpuset
unknown to /containers mycnt
lxc-start 40.087 DEBUG lxc_start - start.c:setup_signal_fd:259
- sigchild handler set
lxc-start 40.089 DEBUG lxc_console -
console.c:lxc_console_peer_default:500 - opening /dev/tty for console peer
lxc-start 40.089 DEBUG lxc_console -
console.c:lxc_console_peer_default:506 - using '/dev/tty' as console
lxc-start 40.089 DEBUG lxc_console -
console.c:lxc_console_sigwinch_init:179 - 509 got SIGWINCH fd 9
lxc-start 40.089 DEBUG lxc_console -
console.c:lxc_console_winsz:88 - set winsz dstfd:6 cols:0 rows:0
lxc-start 40.089 INFO lxc_start - start.c:lxc_init:451 -
'mycnt' is initialized
lxc-start 40.095 DEBUG lxc_start - start.c:__lxc_start:1137 -
Not dropping cap_sys_boot or watching utmp
lxc-start 40.097 INFO lxc_start -
start.c:resolve_clone_flags:848 - Cloning a new user namespace
lxc-start 40.112 DEBUG lxc_conf - conf.c:instantiate_veth:2703
- instantiated veth 'veth-mycnt/vethNPPNHE', index is '12'
lxc-start 40.112 INFO lxc_cgroup - cgroup.c:cgroup_init:65 -
cgroup driver cgroupfs initing for mycnt
lxc-start 40.122 DEBUG lxc_conf -
conf.c:lxc_assign_network:3120 - move 'eth0' to '512'
lxc-start 40.122 NOTICE lxc_start - start.c:do_start:667 -
switching to gid/uid 0 in new user namespace
lxc-start 40.125 DEBUG lxc_conf - conf.c:setup_rootfs:1284 -
mounted '/containers/mycnt/rootfs' on '/usr/lib/lxc/rootfs'
lxc-start 40.125 INFO lxc_conf - conf.c:setup_utsname:919 -
'mycnt' hostname has been setup
lxc-start 40.153 DEBUG lxc_conf - conf.c:setup_netdev:2479 -
'eth0' has been setup
lxc-start 40.153 INFO lxc_conf - conf.c:setup_network:2500 -
network has been setup
lxc-start 40.153 INFO lxc_conf - conf.c:mount_autodev:1148 -
Mounting /dev under /usr/lib/lxc/rootfs
lxc-start 40.153 INFO lxc_conf - conf.c:mount_autodev:1169 -
Mounted tmpfs onto /usr/lib/lxc/rootfs/dev
lxc-start 40.153 INFO lxc_conf - conf.c:mount_autodev:1187 -
Mounted /dev under /usr/lib/lxc/rootfs
lxc-start 40.153 DEBUG lxc_conf - conf.c:mount_entry:1735 -
remounting /shared on /usr/lib/lxc/rootfs/tmp to respect bind or remount optios
lxc-start 40.153 DEBUG lxc_conf - conf.c:mount_entry:1750 -
(at remount) flags for /shared was 0, required extra flags are 0
lxc-start 40.153 DEBUG lxc_conf - conf.c:mount_entry:1759 -
mountflags already was 4098, skipping remount
lxc-start 40.153 DEBUG lxc_conf - conf.c:mount_entry:1785 -
mounted '/shared' on '/usr/lib/lxc/rootfs/tmp', type 'none'
lxc-start 40.153 INFO lxc_conf -
conf.c:mount_file_entries:2034 - mount points have been setup
lxc-start 40.153 INFO lxc_conf - conf.c:fill_autodev:1215 -
Creating initial consoles under /usr/lib/lxc/rootfs/dev
lxc-start 40.153 INFO lxc_conf - conf.c:fill_autodev:1226 -
Populating /dev under /usr/lib/lxc/rootfs
lxc-start 40.154 INFO lxc_conf - conf.c:fill_autodev:1258 -
Populated /dev under /usr/lib/lxc/rootfs
lxc-start 40.154 INFO lxc_conf -
conf.c:setup_dev_console:1515 - console has been setup
lxc-start 40.154 INFO lxc_conf -
conf.c:do_tmp_proc_mount:3576 - I am 1, /proc/self points to ''
lxc-start 40.161 INFO lxc_conf -
conf.c:do_tmp_proc_mount:3602 - Mounted /proc in container for security
transition
lxc-start 40.500 ERROR lxc_conf -
conf.c:prepare_ramfs_root:1378 - Invalid argument - Unable to umount /proc
lxc-start 40.500 ERROR lxc_conf - conf.c:lxc_setup:3917 -
failed to set rootfs for 'mycnt'
lxc-start 40.500 ERROR lxc_start - start.c:do_start:699 -
failed to setup the container
lxc-start 40.500 ERROR lxc_sync - sync.c:__sync_wait:51 -
invalid sequence number 1. expected 2
lxc-start 40.500 WARN lxc_conf -
conf.c:lxc_delete_network:2996 - failed to remove interface 'eth0'
lxc-start 40.515 ERROR lxc_start - start.c:__lxc_start:1164 -
failed to spawn 'mycnt'
lxc-start 40.669 ERROR lxc_start_ui - lxc_start.c:main:344 -
The container failed to start.
lxc-start 40.669 ERROR lxc_start_ui - lxc_start.c:main:348 -
Additional information can be obtained by setting the --logfile and --logprio.
On 07/28/2015 05:09 PM, Serge Hallyn wrote:
> Quoting Przemyslaw Rudy ([email protected]):
>> Referring to this patch:
>> https://lists.linuxcontainers.org/pipermail/lxc-devel/2014-October/010604.html
>>
>> Starting lxc with userns in prepare_ramfs_root() I got -1 from:
>
> rv or errno?
>
>> if (umount2("./proc", MNT_DETACH)) {
>>
>> Shall this error be rather ignored in case of userns? Thus the same
>> logic as for other mount points processed by mentioned function?
>
> Can you give full (-l trace -o debug.output) startup log?
> _______________________________________________
> lxc-devel mailing list
> [email protected]
> http://lists.linuxcontainers.org/listinfo/lxc-devel
>
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