/proc/self/mountinfo before the lxc-start: 1 1 0:2 / / rw - rootfs rootfs rw,size=90972k,nr_inodes=22743 13 1 0:5 / /dev rw,relatime - devtmpfs devtmpfs rw,size=90972k,nr_inodes=22743,mode=755 14 1 0:4 / /proc rw,relatime - proc proc rw 15 13 0:11 / /dev/pts rw,relatime - devpts devpts rw,gid=5,mode=620,ptmxmode=000 16 13 0:13 / /dev/shm rw,relatime - tmpfs tmpfs rw,mode=777 17 1 0:14 / /tmp rw,relatime - tmpfs tmpfs rw 18 1 0:15 / /sys rw,relatime - sysfs sysfs rw 19 18 0:16 / /sys/fs/cgroup rw,relatime - cgroup cgroup rw,cpuset,cpuacct,memory,devices,freezer,net_cls
On 07/29/2015 04:07 AM, Serge Hallyn wrote: > I suspect you're right and we should simply ignore the failure. > > Can you show /proc/self/mountinfo before the lxc-start? > > Quoting Przemyslaw Rudy ([email protected]): >> -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 >>> >> _______________________________________________ >> lxc-devel mailing list >> [email protected] >> http://lists.linuxcontainers.org/listinfo/lxc-devel > _______________________________________________ > lxc-devel mailing list > [email protected] > http://lists.linuxcontainers.org/listinfo/lxc-devel > _______________________________________________ lxc-devel mailing list [email protected] http://lists.linuxcontainers.org/listinfo/lxc-devel
