[lxc-users] unprivileged LXC and lxc-attach...

[Dirk Geschke]

Hi Serge,

> No, I'm afraid you're being misled.  You simply can't strace lxc-attach.

ah, ok...

> Better to do
> 
> 	lxc-attach -l trace -o debugout -n containername
> 
> and look at (or mail here) the contents of the file debugout.

Now I get two error messages:

   lxc_cgfs - cgroups/cgfs.c:lxc_cgroupfs_attach:2538 - could not move attached process 22869 to cgroup of container
   lxc_attach - attach.c:lxc_attach:992 - Expected to receive sequence number 0: No such file or directory.

Does this sound like a known problem? cgmanager is version 0.41, lxc
2.0.8. 

I attach the whole trace...

Best regards

Dirk

-- 
+----------------------------------------------------------------------+
| Dr. Dirk Geschke       / Plankensteinweg 61    / 85435 Erding        |
| Telefon: 08122-559448  / Mobil: 0176-96906350 / Fax: 08122-9818106   |
| dirk at geschke-online.de / dirk at lug-erding.de  / kontakt at lug-erding.de |
+----------------------------------------------------------------------+
-------------- next part --------------
     lxc-attach 20170717071909.190 INFO     lxc_utils - utils.c:get_rundir:280 - XDG_RUNTIME_DIR isn't set in the environment.
     lxc-attach 20170717071909.190 WARN     lxc_confile - confile.c:config_pivotdir:1916 - lxc.pivotdir is ignored.  It will soon become an error.
     lxc-attach 20170717071909.191 INFO     lxc_confile - confile.c:config_idmap:1537 - read uid map: type u nsid 0 hostid 689825 range 65536
     lxc-attach 20170717071909.191 INFO     lxc_confile - confile.c:config_idmap:1537 - read uid map: type g nsid 0 hostid 689825 range 65536
     lxc-attach 20170717071909.191 DEBUG    lxc_commands - commands.c:lxc_cmd_rsp_recv:203 - command get_init_pid response data length is 0
     lxc-attach 20170717071909.191 INFO     lxc_attach_ui - tools/lxc_attach.c:get_pty_on_host:288 - Trying to allocate a pty on the host
     lxc-attach 20170717071909.192 DEBUG    console - console.c:lxc_console_peer_default:447 - using "/dev/tty" as peer tty device
     lxc-attach 20170717071909.192 DEBUG    console - console.c:lxc_console_sigwinch_init:144 - 22862 got SIGWINCH fd 8
     lxc-attach 20170717071909.192 DEBUG    console - console.c:lxc_console_winsz:71 - set winsz dstfd:5 cols:80 rows:24
     lxc-attach 20170717071909.245 DEBUG    lxc_commands - commands.c:lxc_cmd_rsp_recv:203 - command get_init_pid response data length is 0
     lxc-attach 20170717071909.245 INFO     lxc_utils - utils.c:get_rundir:280 - XDG_RUNTIME_DIR isn't set in the environment.
     lxc-attach 20170717071909.245 WARN     lxc_confile - confile.c:config_pivotdir:1916 - lxc.pivotdir is ignored.  It will soon become an error.
     lxc-attach 20170717071909.246 INFO     lxc_confile - confile.c:config_idmap:1537 - read uid map: type u nsid 0 hostid 689825 range 65536
     lxc-attach 20170717071909.246 INFO     lxc_confile - confile.c:config_idmap:1537 - read uid map: type g nsid 0 hostid 689825 range 65536
     lxc-attach 20170717071909.246 DEBUG    lxc_commands - commands.c:lxc_cmd_rsp_recv:203 - command get_clone_flags response data length is 0
     lxc-attach 20170717071909.247 ERROR    lxc_cgfs - cgroups/cgfs.c:lxc_cgroupfs_attach:2538 - could not move attached process 22869 to cgroup of container
     lxc-attach 20170717071909.247 ERROR    lxc_attach - attach.c:lxc_attach:992 - Expected to receive sequence number 0: No such file or directory.