Error: Redolog is smaller than header length of 512 bytes
java.io.IOException: Redolog is smaller than header length of 512 bytes


This is after I 'had to' clear my /opt/zimbra/redologs/ files to get some space on a disk. I'd retained the directory and files, but nulled the contents in it. I know this wasn't a good move and it is not advised to do so.

Now incremental backups are failing with this error. It just says 'no: of errors - 1' but the size of the backup say that there wasn't much files backed up (I do understand that it won't since there are no redologs to start the incrementals)

I understand incremental backups works by periodically moving /opt/zimbra/redologs/redolog/redo.log to archives directory, then initiating the backups after looking into last full backup and the redolog files.

So this will cause a few incremental backups to fail, but for how long? This should recover on its own after sufficient redologs have piled up right? There are entries in the files with /opt/zimbra/redolog/archive directory around a few GB.

I was guessing backup manager would recover this on its own after after the directory has piled up enough files. But I am getting this for succeeding 4 incremental backups. Is this okay or I have to do something to fix this? Please advice.

This is the stack trace that came while listing the backup file.

Number of accounts: 10 out of 10 completed
Number of errors: 1
Error: Redolog is smaller than header length of 512 bytes
java.io.IOException: Redolog is smaller than header length of 512 bytes
at com.zimbra.cs.redolog.logger.FileHeader.read(FileH eader.java:111)
at com.zimbra.cs.redolog.logger.FileLogReader.open(Fi leLogReader.java:67)
at com.zimbra.cs.redolog.logger.FileLogReader.getHead er(FileLogReader.java:80)
at com.zimbra.cs.backup.util.Utils.splitRedoLogsAtSeq (Utils.java:280)
at com.zimbra.cs.backup.FileBackupTarget$FileBackupSe t.backupRedoLogs(FileBackupTarget.java:1248)
at com.zimbra.cs.backup.BackupSet.startIncrementalBac kup(BackupSet.java:788)
at com.zimbra.cs.backup.FileBackupTarget$FileBackupSe t.startIncrementalBackup(FileBackupTarget.java:104 6)
at com.zimbra.cs.backup.BackupManager.backupIncrement al(BackupManager.java:323)
at com.zimbra.cs.service.backup.Backup.handleNetworkR equest(Backup.java:152)
at com.zimbra.cs.service.NetworkDocumentHandler.handl e(NetworkDocumentHandler.java:22)
at com.zimbra.soap.SoapEngine.dispatchRequest(SoapEng ine.java:420)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.jav a:274)
at com.zimbra.soap.SoapEngine.dispatch(SoapEngine.jav a:158)
at com.zimbra.soap.SoapServlet.doWork(SoapServlet.jav a:291)
at com.zimbra.soap.SoapServlet.doPost(SoapServlet.jav a:212)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:727)
at com.zimbra.cs.servlet.ZimbraServlet.service(Zimbra Servlet.java:181)
at javax.servlet.http.HttpServlet.service(HttpServlet .java:820)
at org.mortbay.jetty.servlet.ServletHolder.handle(Ser vletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedCha in.doFilter(ServletHandler.java:1166)
at com.zimbra.cs.servlet.SetHeaderFilter.doFilter(Set HeaderFilter.java:79)
at org.mortbay.jetty.servlet.ServletHandler$CachedCha in.doFilter(ServletHandler.java:1157)
at org.mortbay.servlet.UserAgentFilter.doFilter(UserA gentFilter.java:81)
at org.mortbay.servlet.GzipFilter.doFilter(GzipFilter .java:155)
at org.mortbay.jetty.servlet.ServletHandler$CachedCha in.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(Se rvletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle( SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(Se ssionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(Co ntextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebA ppContext.java:418)
at org.mortbay.jetty.handler.ContextHandlerCollection .handle(ContextHandlerCollection.java:230)
at org.mortbay.jetty.handler.HandlerCollection.handle (HandlerCollection.java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.handler.rewrite.RewriteHandler.h andle(RewriteHandler.java:230)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.handler.DebugHandler.handle(Debu gHandler.java:77)
at org.mortbay.jetty.handler.HandlerWrapper.handle(Ha ndlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(Htt pConnection.java:543)
at org.mortbay.jetty.HttpConnection$RequestHandler.co ntent(HttpConnection.java:939)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser. java:755)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpPa rser.java:218)
at org.mortbay.jetty.HttpConnection.handle(HttpConnec tion.java:405)
at org.mortbay.io.nio.SelectChannelEndPoint.run(Selec tChannelEndPoint.java:413)
at org.mortbay.thread.BoundedThreadPool$PoolThread.ru n(BoundedThreadPool.java:451)