.. title: Upgrading to MoinMoin 1.6
.. slug: upgading_to_moinmoin_1_6
.. date: 2008-04-26 00:00:48
.. tags: ops, software

<p>
  A couple of days ago, I did a dist-upgrade on my server which runs Debian. 
  I'm not sure what version I had prior to the upgrade, but after the upgrade 
  I'm at 1.6.2.  The problem is that the wiki syntax is different, so my wiki
  data was mildly hosed.  I ended up spending 45 minutes to an hour trying
  to figure out how to migrate the data.
</p>
<p>
  The magic script is <code>/usr/share/python-support/python-moinmoin/MoinMoin/script/moin.py</code> .
  You need to run it like this:
</p>
<pre class="code">
$ ./moin.py --config-dir=/path/to/wikiconfig.py/dir/ migration data
</pre>
<p>
  The other problem I had is that I had no <code>meta</code> file in my data
  directory and so the <code>moin.py</code> script would die with a stack
  trace like this:
</p>
<pre class="code">
Traceback (most recent call last):
  File "./moin.py", line 24, in ?
    run()
  File "./moin.py", line 15, in run
    MoinScript().run(showtime=0)
  File "./../../MoinMoin/script/__init__.py", line 138, in run
    self.mainloop()
  File "./../../MoinMoin/script/__init__.py", line 251, in mainloop
    plugin_class(args[2:], self.options).run() # all starts again there
  File "./../../MoinMoin/script/__init__.py", line 138, in run
    self.mainloop()
  File "./../../MoinMoin/script/migration/data.py", line 44, in mainloop
    curr_rev = meta['data_format_revision']
  File "./../../MoinMoin/wikiutil.py", line 472, in __getitem__
    return dict.__getitem__(self, key)
KeyError: 'data_format_revision'
</pre>
<p>
  I assumed that I had some version of 1.5 previously and so I created a 
  <code>meta</code> file with this in it:
</p>
<pre class="code">
data_format_revision: 01050800
</pre>
<p>
  After doing that, the <code>moin.py</code> script worked nicely and all
  my wiki data is in the correct syntax now.
</p>
<div class="update">
<p>
  Updated: 4/26/2008 - Fixed some grammar to make the <code>meta</code> file
  creation step clearer.
</p>
</div>