title: ehcache diskStore is not working
body: <p>my directory of ehcache is not been created whe I set the property  . I am using ehcache-core 2.6.9 and hibernate-ehcache 4.0.1.Final</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="UTF-8"?&gt;
  &lt;ehcache xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:noNamespaceSchemaLocation="ehcache.xsd" updateCheck="true"
      monitoring="autodetect" dynamicConfig="true"&gt;
  
      &lt;diskStore path="/tmp/ehcacheApp1" /&gt;
  
      &lt;defaultCache maxEntriesLocalHeap="10000" eternal="false"
          timeToIdleSeconds="0" timeToLiveSeconds="1800" diskSpoolBufferSizeMB="80"
          maxEntriesLocalDisk="10000000" diskExpiryThreadIntervalSeconds="120"
          memoryStoreEvictionPolicy="LRU" statistics="true"&gt;
          &lt;persistence strategy="localTempSwap" /&gt;
      &lt;/defaultCache&gt;
  
      &lt;cache name="blockiscsi" maxEntriesLocalHeap="10000" eternal="false"
          timeToIdleSeconds="5" timeToLiveSeconds="10"&gt;
          &lt;persistence strategy="localTempSwap" /&gt;
      &lt;/cache&gt;
  
      &lt;cache name="org.hibernate.cache.internal.StandardQueryCache"
          maxEntriesLocalHeap="5" eternal="false" timeToLiveSeconds="120"&gt;
          &lt;persistence strategy="localTempSwap" /&gt;
      &lt;/cache&gt;
  
      &lt;cache name="org.hibernate.cache.spi.UpdateTimestampsCache"
          maxEntriesLocalHeap="5000" eternal="true"&gt;
          &lt;persistence strategy="localTempSwap" /&gt;
      &lt;/cache&gt;
  &lt;/ehcache&gt;
  </code></pre>
  
  <p><strong>update:</strong> I also tried this: <code>&lt;diskStore path="user.dir/ehcache" /&gt;</code></p>
  
  <p>I received this log:</p>
  
  <pre><code>17:53:31.232 [main] WARN  net.sf.ehcache.DiskStorePathManager - diskStorePath '/tmp/ehcache' is already used by an existing CacheManager either in the same VM or in a different process.
  The diskStore path for this CacheManager will be set to /tmp/ehcache/ehcache_auto_created1431805507138728176diskstore.
  To avoid this warning consider using the CacheManager factory methods to create a singleton CacheManager or specifying a separate ehcache configuration (ehcache.xml) for each CacheManager instance.
  </code></pre>