[CRIU] lxc-checkpoint restore failed

[Jason Lee]

Hi all!
Recently I use lxc-checkpoint to c/r linux container.When dumping criu,It's
no problem.but I use lxc-checkpoint -r to restore one lxc. It's failed!
BTW My host os is debian 8 .Here is my enviorment:

lxc.rootfs = /usr/local/var/lib/lxc/d1/rootfs
lxc.include = /usr/local/share/lxc/config/debian.common.conf
lxc.utsname = d1
lxc.arch = amd64
lxc.tty = 0
lxc.pts = 1
lxc.console = none

#lxc.cap.drop = sys_module mac_admin mac_override sys_time
lxc.cgroup.devices.deny = c 5:1 rwm
lxc.aa_allow_incomplete = 1
lxc.network.type = veth
lxc.network.flags = up
# that's the interface defined above in host's interfaces file
lxc.network.link = br0
# name of network device inside the container,
# defaults to eth0, you could choose a name freely
# lxc.network.name = lxcnet0
lxc.network.hwaddr = 00:16:3e:d2:29:be

mount point:
root at dslab:/home# mount
sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)
proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)
udev on /dev type devtmpfs
(rw,relatime,size=10240k,nr_inodes=1002688,mode=755)
devpts on /dev/pts type devpts
(rw,nosuid,noexec,relatime,gid=5,mode=620,ptmxmode=000)
tmpfs on /run type tmpfs (rw,nosuid,relatime,size=1607656k,mode=755)
/dev/sda6 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)
securityfs on /sys/kernel/security type securityfs
(rw,nosuid,nodev,noexec,relatime)
tmpfs on /dev/shm type tmpfs (rw,nosuid,nodev)
tmpfs on /run/lock type tmpfs (rw,nosuid,nodev,noexec,relatime,size=5120k)
tmpfs on /sys/fs/cgroup type tmpfs (ro,nosuid,nodev,noexec,mode=755)
cgroup on /sys/fs/cgroup/systemd type cgroup
(rw,nosuid,nodev,noexec,relatime,xattr,release_agent=/lib/systemd/systemd-cgroups-agent,name=systemd)
pstore on /sys/fs/pstore type pstore (rw,nosuid,nodev,noexec,relatime)
cgroup on /sys/fs/cgroup/cpuset type cgroup
(rw,nosuid,nodev,noexec,relatime,cpuset,clone_children)
cgroup on /sys/fs/cgroup/cpu,cpuacct type cgroup
(rw,nosuid,nodev,noexec,relatime,cpu,cpuacct)
cgroup on /sys/fs/cgroup/memory type cgroup
(rw,nosuid,nodev,noexec,relatime,memory)
cgroup on /sys/fs/cgroup/devices type cgroup
(rw,nosuid,nodev,noexec,relatime,devices)
cgroup on /sys/fs/cgroup/freezer type cgroup
(rw,nosuid,nodev,noexec,relatime,freezer)
cgroup on /sys/fs/cgroup/net_cls,net_prio type cgroup
(rw,nosuid,nodev,noexec,relatime,net_cls,net_prio)
cgroup on /sys/fs/cgroup/blkio type cgroup
(rw,nosuid,nodev,noexec,relatime,blkio)
cgroup on /sys/fs/cgroup/perf_event type cgroup
(rw,nosuid,nodev,noexec,relatime,perf_event)
cgroup on /sys/fs/cgroup/hugetlb type cgroup
(rw,nosuid,nodev,noexec,relatime,hugetlb)
cgroup on /sys/fs/cgroup/debug type cgroup
(rw,nosuid,nodev,noexec,relatime,debug)
cgroup on /sys/fs/cgroup/palloc type cgroup
(rw,nosuid,nodev,noexec,relatime,palloc)
systemd-1 on /proc/sys/fs/binfmt_misc type autofs
(rw,relatime,fd=23,pgrp=1,timeout=300,minproto=5,maxproto=5,direct)
debugfs on /sys/kernel/debug type debugfs (rw,relatime)
mqueue on /dev/mqueue type mqueue (rw,relatime)
hugetlbfs on /dev/hugepages type hugetlbfs (rw,relatime)
/dev/sda4 on /boot type ext4 (rw,relatime,data=ordered)
rpc_pipefs on /run/rpc_pipefs type rpc_pipefs (rw,relatime)

root at dslab:/home# lxc-checkpoint -r -n d1 -D /home/checkpoint_dir/d2/
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/palloc/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/debug/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/hugetlb/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/perf_event/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/blkio/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/net_cls,net_prio/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/freezer/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/devices/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/memory/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/cpu,cpuacct/lxc/d1-2
lxc-checkpoint: cgfs.c: cgroup_rmdir: 207 Device or resource busy -
cgroup_rmdir: failed to delete /sys/fs/cgroup/cpuset/lxc/d1-2
lxc-checkpoint: lxccontainer.c: do_lxcapi_restore: 3772 restore process died
Restoring d1 failed.

Warn  (cr-restore.c:1041): Set CLONE_PARENT | CLONE_NEWPID but it might
cause restore problem,because not all kernels support such clone flags
combinations!
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
RTNETLINK answers: File exists
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x36a8
peer 0 (name /run/systemd/notify dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x36aa
peer 0 (name /run/systemd/private dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x36b4
peer 0 (name /run/systemd/shutdownd dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x36b6
peer 0 (name /run/systemd/journal/dev-log dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x36ba
peer 0 (name /run/systemd/journal/stdout dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x36bc
peer 0 (name /run/systemd/journal/socket dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x5bad
peer 0x70ea (name /run/systemd/journal/stdout dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x6da7
peer 0x3788 (name /run/systemd/journal/stdout dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x6da6
peer 0x5f21 (name /run/systemd/journal/stdout dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x6da8
peer 0x784b (name /run/systemd/journal/stdout dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x6da9
peer 0x6b10 (name /run/systemd/journal/stdout dir -)
     1: Warn  (sk-unix.c:1229): sk unix: Can't unlink stale socket 0x6daa
peer 0x6159 (name /run/systemd/journal/stdout dir -)
    68: Error (sk-packet.c:419): Can't bind packet socket: Invalid argument
Error (cr-restore.c:1236): 3159 killed by signal 19
Error (cr-restore.c:1236): 3159 killed by signal 19
Error (cr-restore.c:1933): Restoring FAILED.

--- 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: enabled


How can I solve this problem? It's the same as the ubuntu.
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