-bash-3.2# vzmigrate –online 173.236.xxx.xx  2260
OPT:- -online

OPT:173.236.xxx.xxx

Starting online migration of CT 2260 to 173.236.xxx.xx

Error:  vzrst module is not loaded on the destination node
Error:  Can’t continue online migration

If you get the above error  the module vzrst module is missing in destination node.

You can check for it using below command

[root@server1 .ssh]# lsmod | grep vz
vzethdev               47520  0
vzdquota               78712  42 [permanent]
vznetdev               57616  84
vzmon                  83992  44 vzethdev,vznetdev
ipv6                  463292  457 vzmon
vzdev                  36872  8 vzethdev,vzdquota,vznetdev,vzmon

Since it is not present you can load it using below command,

[root@server1 .ssh]# modprobe  vzrst
[root@server1 .ssh]# modprobe  vzcpt

Now check again the module must be loaded

[root@server1 .ssh]# lsmod | grep vz
vzcpt                 150584  0
vzrst                 173608  0
vzethdev               47520  0
vzdquota               78712  42 [permanent]
ip_nat                 53520  2 vzrst,iptable_nat
ip_conntrack          101396  36 vzcpt,vzrst,xt_state,iptable_nat,ip_nat
vznetdev               57616  84
vzmon                  83992  46 vzcpt,vzrst,vzethdev,vznetdev
ipv6                  463292  440 vzcpt,vzrst,vzmon
vzdev                  36872  8 vzethdev,vzdquota,vznetdev,vzmon

Now you can continue with your migration ahead