Failed: constraint failed

Support
1

Here is a backup error. Is that some big problem and is it possible to solve it?
UNIQUE constraint failed: Remotevolume.Name, Remotevolume.State
Details: code = Constraint (19), message = System.Data.SQLite.SQLiteException (0x800027AF): constraint failed
UNIQUE constraint failed: Remotevolume.Name, Remotevolume.State
at System.Data.SQLite.SQLite3.Reset(SQLiteStatement stmt)
at System.Data.SQLite.SQLite3.Step(SQLiteStatement stmt)
at System.Data.SQLite.SQLiteDataReader.NextResult()
at System.Data.SQLite.SQLiteDataReader…ctor(SQLiteCommand cmd, CommandBehavior behave)
at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.SQLite.SQLiteCommand.ExecuteNonQuery(CommandBehavior behavior)
at Duplicati.Library.Main.Database.LocalDatabase.UpdateRemoteVolume(String name, RemoteVolumeState state, Int64 size, String hash, Boolean suppressCleanup, TimeSpan deleteGraceTime, IDbTransaction transaction)
at Duplicati.Library.Main.Operation.FilelistProcessor.RemoteListAnalysis(BackendManager backend, Options options, LocalDatabase database, IBackendWriter log, IEnumerable1 protectedFiles) at Duplicati.Library.Main.Operation.FilelistProcessor.VerifyRemoteList(BackendManager backend, Options options, LocalDatabase database, IBackendWriter log, IEnumerable1 protectedFiles)
at Duplicati.Library.Main.Operation.BackupHandler.PreBackupVerify(BackendManager backend, String protectedfile)
at Duplicati.Library.Main.Operation.BackupHandler.d__20.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.Controller.<>c__DisplayClass14_0.b__0(BackupResults result)
at Duplicati.Library.Main.Controller.RunAction[T](T result, String& paths, IFilter& filter, Action`1 method)

Log data:
2020-10-28 07:02:54 +01 - [Error-Duplicati.Library.Main.Operation.BackupHandler-FatalError]: Fatal error
code = Constraint (19), message = System.Data.SQLite.SQLiteException (0x800027AF): constraint failed
UNIQUE constraint failed: Remotevolume.Name, Remotevolume.State
at System.Data.SQLite.SQLite3.Reset(SQLiteStatement stmt)
at System.Data.SQLite.SQLite3.Step(SQLiteStatement stmt)
at System.Data.SQLite.SQLiteDataReader.NextResult()
at System.Data.SQLite.SQLiteDataReader…ctor(SQLiteCommand cmd, CommandBehavior behave)
at System.Data.SQLite.SQLiteCommand.ExecuteReader(CommandBehavior behavior)
at System.Data.SQLite.SQLiteCommand.ExecuteNonQuery(CommandBehavior behavior)
at Duplicati.Library.Main.Database.LocalDatabase.UpdateRemoteVolume(String name, RemoteVolumeState state, Int64 size, String hash, Boolean suppressCleanup, TimeSpan deleteGraceTime, IDbTransaction transaction)
at Duplicati.Library.Main.Operation.FilelistProcessor.RemoteListAnalysis(BackendManager backend, Options options, LocalDatabase database, IBackendWriter log, IEnumerable1 protectedFiles) at Duplicati.Library.Main.Operation.FilelistProcessor.VerifyRemoteList(BackendManager backend, Options options, LocalDatabase database, IBackendWriter log, IEnumerable1 protectedFiles)
at Duplicati.Library.Main.Operation.BackupHandler.PreBackupVerify(BackendManager backend, String protectedfile)
at Duplicati.Library.Main.Operation.BackupHandler.d__20.MoveNext()
Time of report
2020-10-28 07:02:54

2

Hm, think I solve it with database repair

3

What sort of Destination is this? Google Drive and relatives are more prone to this, because multiple files having the same name are possible, and Duplicati expects file names to be unique. If it keeps happening, maybe you could run a log-file at log-file-log-level=retry to allow study of how the duplicate names occurs.