[CRIU] Restoring lxc-1.1.5 centos 7 container with httpd fails

[Adrian Reber]

I am able to restore a lxc-1.1.5 container running centos 7. But if I
start apache's httpd in the container I am no longer able to restore the
container. I get:

(00.028105)      1: mnt: 148:./ private 0 shared 0 slave 1
(00.028206)      1: mnt: Start with 148:./
(00.028209)      1: mnt: 	Mounting unsupported @./ (0)
(00.028212)      1: mnt: 	Mounting unsupported @.criu.mntns.8pI85T/13/ (0)
(00.028215)      1: mnt: 	Bind /tmp/cr-tmpfs.JF8cRh/ to .criu.mntns.8pI85T/13/
(00.028218)      1: mnt: 93:.criu.mntns.8pI85T/13/ private 0 shared 1 slave 0
(00.028225)      1: mnt: 	Mounting tmpfs @.criu.mntns.8pI85T/13/dev (0)
(00.030633)      1: mnt: 94:.criu.mntns.8pI85T/13/dev private 0 shared 1 slave 0
(00.030645)      1: mnt: 	Mounting devpts @.criu.mntns.8pI85T/13/dev/pts (0)
(00.030725)      1: mnt: 95:.criu.mntns.8pI85T/13/dev/pts private 0 shared 1 slave 0
(00.030731)      1: mnt: 	Mounting hugetlbfs @.criu.mntns.8pI85T/13/dev/hugepages (0)
(00.030753)      1: mnt: 98:.criu.mntns.8pI85T/13/dev/hugepages private 0 shared 1 slave 0
(00.030758)      1: mnt: 	Mounting mqueue @.criu.mntns.8pI85T/13/dev/mqueue (0)
(00.030769)      1: mnt: 97:.criu.mntns.8pI85T/13/dev/mqueue private 0 shared 1 slave 0
(00.030773)      1: mnt: 	Mounting tmpfs @.criu.mntns.8pI85T/13/dev/shm (0)
(00.033125)      1: mnt: 96:.criu.mntns.8pI85T/13/dev/shm private 0 shared 1 slave 0
(00.033140)      1: mnt: 	Mounting unsupported @.criu.mntns.8pI85T/13/var/tmp (0)
(00.033143)      1: mnt: 	Bind //var/lib/lxc/c7/rootfs/var/tmp/systemd-private-953f46ab8f04414db2ca1b71ed6212c2-httpd.service-yl6pWp/tmp to .criu.mntns.8pI85T/13/var/tmp
(00.033165)      1: Error (mount.c:2464): mnt: Can't mount at .criu.mntns.8pI85T/13/var/tmp: No such file or directory
(00.033542) Error (cr-restore.c:1384): 18067 exited, status=1
(00.033610) Switching to new ns to clean ghosts
(00.033743) Error (cr-restore.c:2223): Restoring FAILED.

Same error with today's master and criu-dev branch. Full log at:

https://lisas.de/~adrian/restore.log

The host is centos 7 as well. And ideas?

		Adrian