Index: src/test/org/apache/lucene/index/TestIndexReaderReopen.java
===================================================================
--- src/test/org/apache/lucene/index/TestIndexReaderReopen.java	(revision 718221)
+++ src/test/org/apache/lucene/index/TestIndexReaderReopen.java	(working copy)
@@ -999,4 +999,22 @@
     indexDir = new File(tempDir, "IndexReaderReopen");
   }
   
+  // LUCENE-1453
+  public void testFSDirectoryReopen() throws CorruptIndexException, IOException {
+    IndexReader ir = IndexReader.open(indexDir);
+    modifyIndex(3, ir.directory());
+    IndexReader newIr = ir.reopen();
+    modifyIndex(3, newIr.directory());
+    IndexReader newIr2 = newIr.reopen();
+    modifyIndex(3, newIr2.directory());
+    IndexReader newIr3 = newIr2.reopen();
+    
+    ir.close();
+    newIr.close();
+    newIr2.close();
+    
+    // shouldn't throw Directory AlreadyClosedException
+    modifyIndex(3, newIr3.directory());
+  }
+  
 }
Index: src/java/org/apache/lucene/index/DirectoryIndexReader.java
===================================================================
--- src/java/org/apache/lucene/index/DirectoryIndexReader.java	(revision 718221)
+++ src/java/org/apache/lucene/index/DirectoryIndexReader.java	(working copy)
@@ -28,6 +28,7 @@
 import org.apache.lucene.store.Directory;
 import org.apache.lucene.store.Lock;
 import org.apache.lucene.store.LockObtainFailedException;
+import org.apache.lucene.store.FSDirectory;
 
 /**
  * IndexReader implementation that has access to a Directory. 
@@ -71,6 +72,15 @@
       }
     }
   }
+
+  // NOTE: 
+  /** @deprecated Remove in 3.0 (see LUCENE-1453).*/
+  protected Directory maybeCopyFSDirectory() throws IOException {
+    if (closeDirectory && directory instanceof FSDirectory)
+      return FSDirectory.getDirectory(((FSDirectory) directory).getFile());
+    else
+      return directory;
+  }
   
   protected DirectoryIndexReader() {}
   
Index: src/java/org/apache/lucene/index/SegmentReader.java
===================================================================
--- src/java/org/apache/lucene/index/SegmentReader.java	(revision 718221)
+++ src/java/org/apache/lucene/index/SegmentReader.java	(working copy)
@@ -33,6 +33,7 @@
 import org.apache.lucene.search.DefaultSimilarity;
 import org.apache.lucene.store.BufferedIndexInput;
 import org.apache.lucene.store.Directory;
+import org.apache.lucene.store.FSDirectory;
 import org.apache.lucene.store.IndexInput;
 import org.apache.lucene.store.IndexOutput;
 import org.apache.lucene.util.BitVector;
@@ -415,7 +416,8 @@
   
   protected synchronized DirectoryIndexReader doReopen(SegmentInfos infos) throws CorruptIndexException, IOException {
     DirectoryIndexReader newReader;
-    
+    // NOTE: remove this in 3.0
+    Directory dir = maybeCopyFSDirectory();
     if (infos.size() == 1) {
       SegmentInfo si = infos.info(0);
       if (segment.equals(si.name) && si.getUseCompoundFile() == SegmentReader.this.si.getUseCompoundFile()) {
@@ -427,9 +429,9 @@
       }
     } else {
       if (readOnly)
-        return new ReadOnlyMultiSegmentReader(directory, infos, closeDirectory, new SegmentReader[] {this}, null, null);
+        return new ReadOnlyMultiSegmentReader(dir, infos, closeDirectory, new SegmentReader[] {this}, null, null);
       else
-        return new MultiSegmentReader(directory, infos, closeDirectory, new SegmentReader[] {this}, null, null, false);
+        return new MultiSegmentReader(dir, infos, closeDirectory, new SegmentReader[] {this}, null, null, false);
     }
     
     return newReader;
Index: src/java/org/apache/lucene/index/MultiSegmentReader.java
===================================================================
--- src/java/org/apache/lucene/index/MultiSegmentReader.java	(revision 718221)
+++ src/java/org/apache/lucene/index/MultiSegmentReader.java	(working copy)
@@ -29,6 +29,7 @@
 import org.apache.lucene.document.Document;
 import org.apache.lucene.document.FieldSelector;
 import org.apache.lucene.store.Directory;
+import org.apache.lucene.store.FSDirectory;
 
 /** 
  * An IndexReader which reads indexes with multiple segments.
@@ -200,11 +201,14 @@
       // The index has only one segment now, so we can't refresh the MultiSegmentReader.
       // Return a new [ReadOnly]SegmentReader instead
       return SegmentReader.get(readOnly, infos, infos.info(0), false);
-    } else if (readOnly) {
-      return new ReadOnlyMultiSegmentReader(directory, infos, closeDirectory, subReaders, starts, normsCache);
     } else {
-      return new MultiSegmentReader(directory, infos, closeDirectory, subReaders, starts, normsCache, false);
-    }            
+      // NOTE: remove this in 3.0
+      Directory dir = maybeCopyFSDirectory();
+      if (readOnly)
+        return new ReadOnlyMultiSegmentReader(dir, infos, closeDirectory, subReaders, starts, normsCache);
+      else
+        return new MultiSegmentReader(dir, infos, closeDirectory, subReaders, starts, normsCache, false);
+    }
   }
 
   public TermFreqVector[] getTermFreqVectors(int n) throws IOException {