I don't understand the internals well enough but to get online-backup going I removed the log truncate operation from neo core in XaLogicalLog class which seems to conflict with the log still in use. I furthermore removed the timestamp checks in NeoBackup.prepare() because whenever I e.g. use Neoclipse to access either storage file timestamps are changed, leading to failing backups afterwards. I suspect the version should be fine for now. An overall checksum in the Neo store is something to consider in the long run I guess.
Can someone please confirm that my above changes are safe? I am happy to provide the patch for these then. It also would be helpful to get some design understanding around online-backups. Otherwise it's all trial and error ;( -Andreas On Thu, May 14, 2009 at 06:35:28PM -0700, Andreas Guenther wrote: > Hi, > > I tried running the online-backup component but most if not all all test > cases are failing with the same error pasted below. I hope it's something > trivial as I really would like to get the backup feature going. > > Any ideas? > -Andreas > > > at > org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:997) > May 14, 2009 6:19:27 PM org.neo4j.impl.transaction.xaframework.XaLogicalLog > renameCurrentLogFileAndIncrementVersion > WARNING: Failed to truncate log at correct size > java.io.IOException: The requested operation cannot be performed on a file > with a user-mapped section open > at sun.nio.ch.FileChannelImpl.truncate0(Native Method) > at sun.nio.ch.FileChannelImpl.truncate(FileChannelImpl.java:340) > at > org.neo4j.impl.transaction.xaframework.XaLogicalLog.renameCurrentLogFileAndIncrementVersion(XaLogicalLog.java:753) > at > org.neo4j.impl.transaction.xaframework.XaLogicalLog.close(XaLogicalLog.java:929) > at > org.neo4j.impl.transaction.xaframework.XaContainer.close(XaContainer.java:100) > at > org.neo4j.impl.nioneo.xa.NeoStoreXaDataSource.close(NeoStoreXaDataSource.java:232) > at > org.neo4j.impl.nioneo.xa.NioNeoDbPersistenceSource.stop(NioNeoDbPersistenceSource.java:71) > at org.neo4j.api.core.NeoJvmInstance.shutdown(NeoJvmInstance.java:228) > at org.neo4j.api.core.EmbeddedNeo.shutdown(EmbeddedNeo.java:195) > at org.neo4j.onlinebackup.Util.stopNeo(Util.java:88) > at org.neo4j.onlinebackup.Util.stopNeo(Util.java:94) > at > org.neo4j.onlinebackup.MultiRunningTest.backup(MultiRunningTest.java:132) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.junit.internal.runners.TestMethodRunner.executeMethodBody(TestMethodRunner.java:99) > at > org.junit.internal.runners.TestMethodRunner.runUnprotected(TestMethodRunner.java:81) > at > org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34) > at > org.junit.internal.runners.TestMethodRunner.runMethod(TestMethodRunner.java:75) > at > org.junit.internal.runners.TestMethodRunner.run(TestMethodRunner.java:45) > at > org.junit.internal.runners.TestClassMethodsRunner.invokeTestMethod(TestClassMethodsRunner.java:71) > at > org.junit.internal.runners.TestClassMethodsRunner.run(TestClassMethodsRunner.java:35) > at > org.junit.internal.runners.TestClassRunner$1.runUnprotected(TestClassRunner.java:42) > at > org.junit.internal.runners.BeforeAndAfterRunner.runProtected(BeforeAndAfterRunner.java:34) > at > org.junit.internal.runners.TestClassRunner.run(TestClassRunner.java:52) > at > org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:62) > at > org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:140) > at > org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:127) > at org.apache.maven.surefire.Surefire.run(Surefire.java:177) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at > org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:338) > > _______________________________________________ > Neo mailing list > User@lists.neo4j.org > https://lists.neo4j.org/mailman/listinfo/user _______________________________________________ Neo mailing list User@lists.neo4j.org https://lists.neo4j.org/mailman/listinfo/user
