Defining DataDir in Multi-Core

[vivek sar]

Hi,

  I'm trying to set up cores dynamically. I want to use the same
schema.xml and solrconfig.xml for all the created cores, so plan to
pass the same instance directory, but different dir directory. Here is
what I got in solr.xml by default (I didn't want define any core here,
but looks like we have to have at least one core defined before we
start the Solr).

<solr persistent="true">
    <cores adminPath="/admin/cores">
      <core name="core0" instanceDir="."/>
    </cores>
</solr>

Now I run the following URL in the browser (as described on wiki -
http://wiki.apache.org/solr/CoreAdmin),

http://localhost:8080/solr/admin/cores?action=CREATE&name=20090331_1&instanceDir=/Users/opal/temp/chat/solr&dataDir=/Users/opal/temp/chat/solr/data/20090331_1

I get a response,

<str name="saved">/Users/opal/temp/chat/solr/solr.xml</str>

Now when I check the solr.xml I see,

<?xml version='1.0' encoding='UTF-8'?><solr persistent='true'>
<cores adminPath='/admin/cores'>
  <core name='core0' instanceDir='./'/>
  <core name='20090331_2' instanceDir='/Users/opal/temp/afterchat/solr/'/>
</cores>
</solr>

Note, there is NO dir directory specified. When I check the status
(http://localhost:8080/solr/admin/cores?action=STATUS) I see,

<str name="name">core0</str>
<str name="instanceDir">/Users/opal/temp/afterchat/solr/./</str>
<str name="dataDir">/Users/opal/temp/afterchat/solr/./data/</str>
...

<str name="name">20090331_2</str>
<str name="instanceDir">/Users/opal/temp/afterchat/solr/</str>
<str name="dataDir">/Users/opal/temp/afterchat/solr/data/</str>

both cores are pointing to the same data directory. My question is how
can I create cores on fly and have them point to different data
directories so each core write index in different location?

Thanks,
-vivek