title: Fix a corrupted NPM database in Nexus?
body: <p>Our Nexus server filled its disk, and when we restarted it I got the following error:</p>
  
  <pre><code>jvm 1    | 2015-08-18 09:44:13,660+1000 ERROR [jetty-main-1] *SYSTEM com.bolyuba.nexus.plugin.npm.service.internal.orient.OrientMetadataStore - Life-cycle operation failed
  jvm 1    | com.orientechnologies.orient.core.exception.OStorageException: Cannot open local storage '/nexus/db/npm' with mode=rw
  jvm 1    |      at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:220) ~[nexus-npm-repository-plugin-2.11.3-01/:na]
  jvm 1    |      at com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx.open(ODatabaseDocumentTx.java:244) ~[nexus-npm-repository-plugin-2.11.3-01/:na]
  jvm 1    |      at com.bolyuba.nexus.plugin.npm.service.internal.orient.OrientMetadataStore.doStart(OrientMetadataStore.java:107) ~[nexus-npm-repository-plugin-2.11.3-01/:na]
  jvm 1    |      at org.sonatype.sisu.goodies.lifecycle.LifecycleSupport$Handler.doStart(LifecycleSupport.java:70) ~[goodies-lifecycle-1.9.jar:1.9]
  jvm 1    |      at org.sonatype.sisu.goodies.lifecycle.LifecycleHandlerContext$MainMap_Starting.started(LifecycleHandlerContext.java:255) ~[goodies-lifecycle-1.9.jar:1.9]
  jvm 1    |      at org.sonatype.sisu.goodies.lifecycle.LifecycleHandlerContext.started(LifecycleHandlerContext.java:57) ~[goodies-lifecycle-1.9.jar:1.9]
  jvm 1    |      at org.sonatype.sisu.goodies.lifecycle.LifecycleSupport.start(LifecycleSupport.java:129) ~[goodies-lifecycle-1.9.jar:1.9]
  jvm 1    |      at com.bolyuba.nexus.plugin.npm.service.internal.orient.OrientMetadataStoreLifecycle.on(OrientMetadataStoreLifecycle.java:51) [nexus-npm-repository-plugin-2.11.3-01/:na]
  
  
  jvm 1    | Caused by: com.orientechnologies.orient.core.exception.OStorageException: File with name internal.pcl does not exist in storage npm
  jvm 1    |      at com.orientechnologies.orient.core.index.hashindex.local.cache.OWOWCache.openFile(OWOWCache.java:249) ~[nexus-npm-repository-plugin-2.11.3-01/:na]
  jvm 1    |      at com.orientechnologies.orient.core.index.hashindex.local.cache.OReadWriteDiskCache.openFile(OReadWriteDiskCache.java:159) ~[nexus-npm-repository-plugin-2.11.3-01/:na]
  jvm 1    |      at com.orientechnologies.orient.core.storage.impl.local.paginated.base.ODurableComponent.openFile(ODurableComponent.java:145) ~[nexus-npm-repository-plugin-2.11.3-01/:na]
  jvm 1    |      at com.orientechnologies.orient.core.storage.impl.local.paginated.OPaginatedCluster.open(OPaginatedCluster.java:203) ~[nexus-npm-repository-plugin-2.11.3-01/:na]
  jvm 1    |      at com.orientechnologies.orient.core.storage.impl.local.OAbstractPaginatedStorage.open(OAbstractPaginatedStorage.java:190) ~[nexus-npm-repository-plugin-2.11.3-01/:na]
  jvm 1    |      ... 61 common frames omitted
  </code></pre>
  
  <p>How do I fix this?</p>