migrating from Debian lenny (2.0.1) to Debian squeeze (2.1.5) on a different host

Hi,

I am currently trying to migrate from a host running Debian lenny to a different host running Debian squeeze. So I have to face the challenges of (a) changing the host name in the mnesia stuff and (b) doing the actual upgrade.

Unofortunately, I have not been successful in completing these tasks, most probably due to lack of erlang knowledge. Please read on and try to help.

First, I dumped the database on the old host (ejabberd 2.0.1) to a dump file:
| ejabberdctl --node ejabberd@nechayev backup /tmp/backupfile
and moved the backup file to the new host.

The new host was installed with Debian squeeze, ejabberd 2.1.5 installed and running.

The procedure outlined in the README.Debian.gz file to change the host name does not work as advertised:
| (jabberd)root@cucaracha:/home/mh# sudo -u ejabberd erl -pa /usr/lib/ejabberd/ebin
| Erlang R14A (erts-5.8) [source] [smp:2:2] [rq:2] [async-threads:0] [kernel-poll:false]
|
| Eshell V5.8 (abort with ^G)
| 1> mnesia_convert:change_node_name('ejabberd@nechayev','ejabberd@cucaracha',"/tmp/backupfile","/tmp/newnewfile").
| ** exception error: undefined function mnesia_convert:change_node_name/4
| 2>

I thus tried to use the older migration procedure that was outlined in a forum entry here:
| wget http://www.ejabberd.im/files/contributions/convert.erl
| cucaracha:/home/mh# erl
| Erlang (BEAM) emulator version 5.6.3 [source] [smp:2] [async-threads:0] [kernel-poll:false]
|
| Eshell V5.6.3 (abort with ^G)
| 1> c("convert.erl").
| {ok,convert}
| 2> convert:change_node_name('ejabberd@nechayev','ejabberd@cucaracha','/tmp/backupfile','/tmp/newfile').
|

However, importing does not work:
| (jabberd)root@cucaracha:/home/mh# sudo -u ejabberd ejabberdctl --node ejabberd@cucaracha restore /home/mh/newfile
| Can't restore backup from "/home/mh/newfile" at node ejabberd@cucaracha: Table disco_publish does not exist.

For this, there is a solution in the forum, since disco_publish is not used any more:
| (ejabberd@cucaracha)1> mnesia:restore("/home/mh/newfile",[{skip_tables,[disco_publish]}]).
| {aborted,{no_exists,user_caps}}

But for this {aborted,{no_exist,user_caps}} there does not seem to be a solution in the forums.

How do I complete my migration?

Greetings
Marc