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From "Nicolas Maisonneuve" <n.maisonne...@hotPop.com>
Subject Re: Betreff: Copy Directory to Directory function ( backup)
Date Thu, 15 Jan 2004 14:58:13 GMT
thanks ! the copy function works
but i have troubles..
I used a scheduled task to backup the index.
for the test , a backup is made all the 15 secondes.
and sometime , in the backup process,
when i clean a directory with :
Directory target=FSDirectory.getDirectory(selected_backup_dir, true);
i have a Exception :
java.io.IOException: couldn't delete segments
 at org.apache.lucene.store.FSDirectory.create(FSDirectory.java:166)
 at org.apache.lucene.store.FSDirectory.<init>(FSDirectory.java:151)
 at org.apache.lucene.store.FSDirectory.getDirectory(FSDirectory.java:132)
 at
lab.crip5.ECR.cocoon.components.IndexBackupJob.backup(IndexBackupJob.java:13
5)

the exception happend sometimes

my backup function is simple :

  private void backup (String index_to_backup) throws Exception {
        getLogger().info("begin backup index "+index_to_backup+" at "+new
Date()+"...");

        // get the directory of the index
        Directory
source=index_manager.getIndex(index_to_backup).getDirectory();

        // select target backup directory
        File target_backup_dir=select_backup(index_to_backup);

        // clean the old index
        Directory target=FSDirectory.getDirectory(new_backup_dir, true);

        // backup
        copy(source, target);

        target.close();

        getLogger().info("end backup index "+index_to_backup+" at "+new
Date()+"...ok");
    }

----- Original Message ----- 
From: "Nicolas Maisonneuve" <n.maisonneuve@hotPop.com>
To: <lucene-user@jakarta.apache.org>
Sent: Thursday, January 15, 2004 3:21 PM
Subject: Fw: Betreff: Copy Directory to Directory function ( backup)


>
> ----- Original Message ----- 
> From: "Nick Smith" <nick.smith@techop.ch>
> To: <n.maisonneuve@hotPop.com>
> Sent: Thursday, January 15, 2004 2:58 PM
> Subject: Betreff: Copy Directory to Directory function ( backup)
>
>
> > Hi Nico,
> >    This is the method that I use for backing up my indices...
> >
> > Good Luck!
> >
> > Nick
> >
> >   /**
> >    * Copy contents of <code>dir</code>, erasing current contents.
> >    *
> >    * This can be used to write a memory-based index to disk.
> >    *
> >    * @param dir a <code>Directory</code> value
> >    * @exception IOException if an error occurs
> >    */
> >   public void copyDir(Directory dir) throws IOException {
> >     // remove current contents of directory
> >     create();
> >
> >     final String[] ar = dir.list();
> >     for (int i = 0; i < ar.length; i++)
> >     {
> >       // make place on disk
> >       OutputStream os = createFile(ar[i]);
> >       // read current file
> >       InputStream is = dir.openFile(ar[i]);
> >
> >       final int MAX_CHUNK_SIZE = 131072;
> >       byte[] buf = new byte[MAX_CHUNK_SIZE];
> >       int remainder = (int)is.length();
> >       while (remainder > 0) {
> >         int chunklen = (remainder > MAX_CHUNK_SIZE ? MAX_CHUNK_SIZE :
> remainde!
> >         is.readBytes(buf, 0, chunklen);
> >         os.writeBytes(buf, chunklen);
> >         remainder -= chunklen;
> >       }
> >
> >       // graceful cleanup
> >       is.close();
> >       os.close();
> >     }
> >   }
> >
> >
> >
>
>
>
>
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>
>




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