If you want a huge amount of output, use --log-file-log-level=profiling and --profile-all-database-queries which isn’t yet in the manual, but was added in Release: 2.0.3.10 (canary) 2018-08-30 as a log option:
Removed some logging details in core performance areas (can be re-enabled with
--profile-all-database-queries)
So “better” depends on your goal, but the above is as much logging as I think there is. Rotating or deleting logs would probably be good, and maybe install a large-log-file viewer like glogg, if your editor isn’t enough.
As a side note, I cranked up my scheduled backup frequency here, and also threw in some other suspect things such as smart retention. I managed to get this problem in the 6:45 run detected in the 6:55 run. The difference was fileset 0 so it may or may not be like the non-0 cases. Nevertheless I’m trying to look at it…
Exactly what inspired it isn’t clear because there are many things going on, including compact and deletion which are at least expected (whether they’re perfect isn’t known) and also some other oddball errors below:
Failed: Unexpected difference in fileset version 0: 3/25/2019 6:45:00 PM (database id: 99), found 432 entries, but expected 433
Details: Duplicati.Library.Interface.UserInformationException: Unexpected difference in fileset version 0: 3/25/2019 6:45:00 PM (database id: 99), found 432 entries, but expected 433
at Duplicati.Library.Main.Database.LocalDatabase.VerifyConsistency(Int64 blocksize, Int64 hashsize, Boolean verifyfilelists, IDbTransaction transaction)
at Duplicati.Library.Main.Operation.Backup.BackupDatabase.<>c__DisplayClass32_0.<VerifyConsistencyAsync>b__0()
at Duplicati.Library.Main.Operation.Common.SingleRunner.<>c__DisplayClass3_0.<RunOnMain>b__0()
at Duplicati.Library.Main.Operation.Common.SingleRunner.<DoRunOnMain>d__2`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Duplicati.Library.Main.Operation.BackupHandler.<RunAsync>d__19.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at CoCoL.ChannelExtensions.WaitForTaskOrThrow(Task task)
at Duplicati.Library.Main.Operation.BackupHandler.Run(String[] sources, IFilter filter)
at Duplicati.Library.Main.Controller.<>c__DisplayClass13_0.<Backup>b__0(BackupResults result)
at Duplicati.Library.Main.Controller.RunAction[T](T result, String[]& paths, IFilter& filter, Action`1 method)
Log data:
2019-03-25 18:55:50 -04 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: C:\PortableApps\Notepad++Portable\App\Notepad++\Notepad++Portable\
System.UnauthorizedAccessException: (5) Access is denied: [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy68\PortableApps\Notepad++Portable\App\Notepad++\Notepad++Portable\]
at Alphaleonis.Win32.NativeError.ThrowException(UInt32 errorCode, String readPath, String writePath)
at Alphaleonis.Win32.Filesystem.File.GetAttributesExCore[T](KernelTransaction transaction, String path, PathFormat pathFormat, Boolean returnErrorOnNotFound)
at Duplicati.Library.Snapshots.SystemIOWindows.GetFileAttributes(String path)
at Duplicati.Library.Utility.Utility.<EnumerateFileSystemEntries>d__23.MoveNext()
2019-03-25 18:55:53 -04 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: C:\PortableApps\Notepad++Portable\App\Notepad++\plugins\
Alphaleonis.Win32.Filesystem.DeviceNotReadyException: (21) The device is not ready: [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy68\PortableApps\Notepad++Portable\App\Notepad++\plugins\]
at Alphaleonis.Win32.NativeError.ThrowException(UInt32 errorCode, String readPath, String writePath)
at Alphaleonis.Win32.Filesystem.File.GetAttributesExCore[T](KernelTransaction transaction, String path, PathFormat pathFormat, Boolean returnErrorOnNotFound)
at Duplicati.Library.Snapshots.SystemIOWindows.GetFileAttributes(String path)
at Duplicati.Library.Utility.Utility.<EnumerateFileSystemEntries>d__23.MoveNext()
2019-03-25 18:55:53 -04 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: C:\PortableApps\Notepad++Portable\App\Notepad++\themes\
Alphaleonis.Win32.Filesystem.DeviceNotReadyException: (21) The device is not ready: [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy68\PortableApps\Notepad++Portable\App\Notepad++\themes\]
at Alphaleonis.Win32.NativeError.ThrowException(UInt32 errorCode, String readPath, String writePath)
at Alphaleonis.Win32.Filesystem.File.GetAttributesExCore[T](KernelTransaction transaction, String path, PathFormat pathFormat, Boolean returnErrorOnNotFound)
at Duplicati.Library.Snapshots.SystemIOWindows.GetFileAttributes(String path)
at Duplicati.Library.Utility.Utility.<EnumerateFileSystemEntries>d__23.MoveNext()
2019-03-25 18:55:53 -04 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: C:\PortableApps\Notepad++Portable\App\Notepad++\updater\
Alphaleonis.Win32.Filesystem.DeviceNotReadyException: (21) The device is not ready: [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy68\PortableApps\Notepad++Portable\App\Notepad++\updater\]
at Alphaleonis.Win32.NativeError.ThrowException(UInt32 errorCode, String readPath, String writePath)
at Alphaleonis.Win32.Filesystem.File.GetAttributesExCore[T](KernelTransaction transaction, String path, PathFormat pathFormat, Boolean returnErrorOnNotFound)
at Duplicati.Library.Snapshots.SystemIOWindows.GetFileAttributes(String path)
at Duplicati.Library.Utility.Utility.<EnumerateFileSystemEntries>d__23.MoveNext()
2019-03-25 18:55:53 -04 - [Warning-Duplicati.Library.Main.Operation.Backup.FileEnumerationProcess-FileAccessError]: Error reported while accessing file: C:\PortableApps\Notepad++Portable\App\Notepad++\
Alphaleonis.Win32.Filesystem.DeviceNotReadyException: (21) The device is not ready: [\\?\GLOBALROOT\Device\HarddiskVolumeShadowCopy68\PortableApps\Notepad++Portable\App\Notepad++\*]
at Alphaleonis.Win32.NativeError.ThrowException(UInt32 errorCode, String readPath, String writePath)
at Alphaleonis.Win32.Filesystem.FindFileSystemEntryInfo.FindFirstFile(String pathLp, WIN32_FIND_DATA& win32FindData)
at Alphaleonis.Win32.Filesystem.FindFileSystemEntryInfo.<Enumerate>d__3`1.MoveNext()
at System.Linq.Buffer`1..ctor(IEnumerable`1 source)
at System.Linq.Enumerable.ToArray[TSource](IEnumerable`1 source)
at Duplicati.Library.Snapshots.WindowsSnapshot.ListFiles(String localFolderPath)
at Duplicati.Library.Utility.Utility.<EnumerateFileSystemEntries>d__23.MoveNext()
2019-03-25 18:55:54 -04 - [Error-Duplicati.Library.Main.Operation.BackupHandler-FatalError]: Fatal error
Duplicati.Library.Interface.UserInformationException: Unexpected difference in fileset version 0: 3/25/2019 6:45:00 PM (database id: 99), found 432 entries, but expected 433
at Duplicati.Library.Main.Database.LocalDatabase.VerifyConsistency(Int64 blocksize, Int64 hashsize, Boolean verifyfilelists, IDbTransaction transaction)
at Duplicati.Library.Main.Operation.Backup.BackupDatabase.<>c__DisplayClass32_0.<VerifyConsistencyAsync>b__0()
at Duplicati.Library.Main.Operation.Common.SingleRunner.<>c__DisplayClass3_0.<RunOnMain>b__0()
at Duplicati.Library.Main.Operation.Common.SingleRunner.<DoRunOnMain>d__2`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at Duplicati.Library.Main.Operation.BackupHandler.<RunAsync>d__19.MoveNext()
Above is the contents of the email reporting the error. It’s picked out some things from 6:55 log, but to see 6:45 I have to use the log files that I set myself (mainly so analysis of problems that spring up is possible).