title: Neo4j server in VirtualBox: Unable to create rrd store
body: <p>I'm trying to run a <strong>Neo4j server inside my Virtualbox</strong> which is running Ubuntu. The <strong>server files and the database</strong> are located within my Windows-Host and accessed <strong>via a shared folder</strong> (vboxsf).
  Unfortunately I can not easily transfer the data into the virtual machine and run it there directly (due to insufficient free space on the virtual disk. I tried to enlarge it but that didn't work out.)</p>
  
  <p>The database was set up and used by my teammate. Now I want to access the prepared data on my system. (btw, I'm a complete newbie to neo4j) My overall setup (VM instead of a native system) is a bit different and we couldn't figure out, what the actual problem is.</p>
  
  <p>When I try to start the server via the console, I get this:</p>
  
  <pre><code>don@VirtualHAL:~/Data/SharedFolder/DBs/neo4j-community-1.9$ bin/neo4j start
  WARNING! You are using an unsupported Java runtime. Please use Oracle(R) Java(TM) Runtime Environment 7.
  Starting Neo4j Server...WARNING: not changing user
  process [7248]... waiting for server to be ready.............. Failed to start within 120 seconds.
  Neo4j Server may have failed to start, please check the logs.
  </code></pre>
  
  <p>The warning about the java version is propably caused by the fact that I installed Java OpenJDK 7. (My teammate uses the same, without any further problems).</p>
  
  <p>It does not actually take 2 minutes until the 'Failed to start within 120 seconds' message appears.</p>
  
  <p>Of course, I checked the logs:</p>
  
  <pre><code>8/21/13 8:37:12 PM org.neo4j.server.modules.RESTApiModule INFO: Mounted REST API at [/db/data/]
  8/21/13 8:37:12 PM org.neo4j.server.modules.ManagementApiModule INFO: Mounted management API at [/db/manage/]
  8/21/d13 8:37:12 PM org.neo4j.server.rrd.RrdFactory SEVERE: Unable to open rrd store, attempting to recreate it**
  8/21/13 8:37:12 PM org.neo4j.server.rrd.RrdFactory SEVERE: current RRDB is invalid, renamed it to /home/don/Data/SharedFolder/DBs/neo4j-community-1.9/data/rrd-invalid-1377110232712
  8/21/13 8:37:12 PM org.neo4j.server.rrd.RrdFactory SEVERE: Unable to create new rrd store
  8/21/13 8:37:12 PM org.neo4j.server.CommunityBootstrapper SEVERE: 
  java.lang.RuntimeException: java.io.IOException: Invalid argument
      at org.neo4j.server.rrd.RrdFactory.createRrdb(RrdFactory.java:176)
      at org.neo4j.server.rrd.RrdFactory.recreateArchive(RrdFactory.java:204)
      at org.neo4j.server.rrd.RrdFactory.createRrdb(RrdFactory.java:159)
  </code></pre>
  
  <p>This is the (seemingly) relevant part of the log. 
  <code>Unable to create new rrd store</code> - What could be the cause for this? 
  Searching for any parts of the error message didn't get me any new information so far. </p>