[lxc-users] CRIU with lxc.network.type empty fails

[Dietmar Maurer]

> > What container images from https://images.linuxcontainers.org/ are 
> > known to work with CRIU?
> 
> I've tested with all the Ubuntu releases (not including wily, which
> isn't tagged yet), but not anything else. There are a few known bugs
> related to lxcfs that I haven't had time to track down, but if you
> e.g. use trusty without lxcfs I'm not aware of any bugs at the moment.
> I'm sure they exist, though, so feedback is definitely appreciated!

I still use lxcfs for my tests, and I get the same errors 
with ubuntu 15.04 (vivid):

...
(00.124385) fsnotify: wd: wd 0x00000002 s_dev 0x00700000 i_ino 0x
           1823 mask 0x0800afce
(00.124387) fsnotify: 	[fhandle] bytes 0x00000008 type 0x00000001 __handle
0x186df32600001823:0x0000000000000000
(00.124388) fsnotify: Opening fhandle 700000:186df32600001823...
(00.124392) Path `/' resolved to `./' mountpoint
(00.124397) fsnotify: 	Handle 0x700000:0x1823 is openable
(00.124399) Warn  (fsnotify.c:188): fsnotify: 	Handle 0x700000:0x1823 cannot be
opened
(00.124400) irmap: Resolving 700:1823 path
(00.124407) irmap: Scanning /etc hint
(00.124423) irmap: Scanning /var/spool hint
(00.124426) irmap: Scanning /lib/udev hint
(00.124427) irmap: Scanning /. hint
(00.124428) irmap: Scanning /no-such-path hint
(00.124429) irmap: Refresh stat for /no-such-path
(00.124436) Error (irmap.c:81): irmap: Can't stat /no-such-path: No such file or
directory
(00.124438) Error (fsnotify.c:191): fsnotify: 	Can't dump that handle
(00.124445) ----------------------------------------
(00.124446) Error (cr-dump.c:1255): Dump files (pid: 3220) failed with -1

with ubuntu 14.04 I get this:

...
(00.003608) autodetected external mount /sys/fs/pstore/ for ./sys/fs/pstore
(00.003610) autodetected external mount /sys/kernel/security/ for
./sys/kernel/security
(00.003611) autodetected external mount /sys/kernel/debug/ for
./sys/kernel/debug
(00.003613) autodetected external mount /sys/fs/fuse/connections/ for
./sys/fs/fuse/connections
(00.003620) Error (mount.c:680): FS mnt ./sys/kernel/debug/tracing dev 0x9 root
/ unsupported id 130
...
(00.003719) Error (cr-dump.c:1618): Dumping FAILED.

(using latest ubuntu 4.1 kernel)

I guess this is related to lxcfs?