TASK ERROR: missing 'arch' at 4.0 lxc container

Dear


I am testing upgrade from 3.4 to 4.0 around openVZ container CentOs base.

I backuped the CT at 3.4, and I restored the file in 4.0.


The restoring was OK, however an error came at starting 4.0 CT.


TASK ERROR: missing 'arch' - internal error at /usr/share/perl5/PVE/LXC.pm line 1062.




Because the item 'architecture' of CT is 'unknown', So it happen?


If so, where is the conf files in 4.0? The /etc/pve/nodes/proc40/lxc/xxx.conf file?


Can I modify it?


yugawara