Errors while backing up files from same folder

Hello.
I started using duplicati the last Sunday backing up my data towards Backblaze B2.

I installed it on my Synology Nas using docker, it’s running as my admin account (puid and admin pgid) but for whatever reason, there are some files that wouldn’t backup up. Moreover, there are some files from that same folder which were backed up without any problems.

Could anyone shed some light on this?

Here are the full logs.

            {
  "DeletedFiles": 1,
  "DeletedFolders": 0,
  "ModifiedFiles": 1,
  "ExaminedFiles": 56260,
  "OpenedFiles": 9,
  "AddedFiles": 8,
  "SizeOfModifiedFiles": 977330,
  "SizeOfAddedFiles": 26199245,
  "SizeOfExaminedFiles": 239685144741,
  "SizeOfOpenedFiles": 27176575,
  "NotProcessedFiles": 0,
  "AddedFolders": 0,
  "TooLargeFiles": 0,
  "FilesWithError": 0,
  "ModifiedFolders": 0,
  "ModifiedSymlinks": 0,
  "AddedSymlinks": 0,
  "DeletedSymlinks": 0,
  "PartialBackup": false,
  "Dryrun": false,
  "MainOperation": "Backup",
  "CompactResults": {
    "DeletedFileCount": 0,
    "DownloadedFileCount": 0,
    "UploadedFileCount": 0,
    "DeletedFileSize": 0,
    "DownloadedFileSize": 0,
    "UploadedFileSize": 0,
    "Dryrun": false,
    "VacuumResults": null,
    "MainOperation": "Compact",
    "ParsedResult": "Success",
    "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
    "EndTime": "2023-11-17T03:14:24.960595Z",
    "BeginTime": "2023-11-17T03:14:11.622451Z",
    "Duration": "00:00:13.3381440",
    "MessagesActualLength": 0,
    "WarningsActualLength": 0,
    "ErrorsActualLength": 0,
    "Messages": null,
    "Warnings": null,
    "Errors": null,
    "BackendStatistics": {
      "RemoteCalls": 9,
      "BytesUploaded": 32211559,
      "BytesDownloaded": 57966071,
      "FilesUploaded": 3,
      "FilesDownloaded": 3,
      "FilesDeleted": 1,
      "FoldersCreated": 0,
      "RetryAttempts": 0,
      "UnknownFileSize": 0,
      "UnknownFileCount": 0,
      "KnownFileCount": 7554,
      "KnownFileSize": 197780353722,
      "LastBackupDate": "2023-11-17T04:00:09+01:00",
      "BackupListCount": 4,
      "TotalQuotaSpace": 0,
      "FreeQuotaSpace": 0,
      "AssignedQuotaSpace": -1,
      "ReportedQuotaError": false,
      "ReportedQuotaWarning": false,
      "MainOperation": "Backup",
      "ParsedResult": "Success",
      "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
      "EndTime": "0001-01-01T00:00:00",
      "BeginTime": "2023-11-17T03:00:01.164061Z",
      "Duration": "00:00:00",
      "MessagesActualLength": 0,
      "WarningsActualLength": 0,
      "ErrorsActualLength": 0,
      "Messages": null,
      "Warnings": null,
      "Errors": null
    }
  },
  "VacuumResults": null,
  "DeleteResults": {
    "DeletedSetsActualLength": 1,
    "DeletedSets": [
      {
        "Item1": 1,
        "Item2": "2023-11-16T04:00:11+01:00"
      }
    ],
    "Dryrun": false,
    "MainOperation": "Delete",
    "CompactResults": {
      "DeletedFileCount": 0,
      "DownloadedFileCount": 0,
      "UploadedFileCount": 0,
      "DeletedFileSize": 0,
      "DownloadedFileSize": 0,
      "UploadedFileSize": 0,
      "Dryrun": false,
      "VacuumResults": null,
      "MainOperation": "Compact",
      "ParsedResult": "Success",
      "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
      "EndTime": "2023-11-17T03:14:24.960595Z",
      "BeginTime": "2023-11-17T03:14:11.622451Z",
      "Duration": "00:00:13.3381440",
      "MessagesActualLength": 0,
      "WarningsActualLength": 0,
      "ErrorsActualLength": 0,
      "Messages": null,
      "Warnings": null,
      "Errors": null,
      "BackendStatistics": {
        "RemoteCalls": 9,
        "BytesUploaded": 32211559,
        "BytesDownloaded": 57966071,
        "FilesUploaded": 3,
        "FilesDownloaded": 3,
        "FilesDeleted": 1,
        "FoldersCreated": 0,
        "RetryAttempts": 0,
        "UnknownFileSize": 0,
        "UnknownFileCount": 0,
        "KnownFileCount": 7554,
        "KnownFileSize": 197780353722,
        "LastBackupDate": "2023-11-17T04:00:09+01:00",
        "BackupListCount": 4,
        "TotalQuotaSpace": 0,
        "FreeQuotaSpace": 0,
        "AssignedQuotaSpace": -1,
        "ReportedQuotaError": false,
        "ReportedQuotaWarning": false,
        "MainOperation": "Backup",
        "ParsedResult": "Success",
        "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
        "EndTime": "0001-01-01T00:00:00",
        "BeginTime": "2023-11-17T03:00:01.164061Z",
        "Duration": "00:00:00",
        "MessagesActualLength": 0,
        "WarningsActualLength": 0,
        "ErrorsActualLength": 0,
        "Messages": null,
        "Warnings": null,
        "Errors": null
      }
    },
    "ParsedResult": "Success",
    "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
    "EndTime": "2023-11-17T03:14:24.960602Z",
    "BeginTime": "2023-11-17T03:12:47.335414Z",
    "Duration": "00:01:37.6251880",
    "MessagesActualLength": 0,
    "WarningsActualLength": 0,
    "ErrorsActualLength": 0,
    "Messages": null,
    "Warnings": null,
    "Errors": null,
    "BackendStatistics": {
      "RemoteCalls": 9,
      "BytesUploaded": 32211559,
      "BytesDownloaded": 57966071,
      "FilesUploaded": 3,
      "FilesDownloaded": 3,
      "FilesDeleted": 1,
      "FoldersCreated": 0,
      "RetryAttempts": 0,
      "UnknownFileSize": 0,
      "UnknownFileCount": 0,
      "KnownFileCount": 7554,
      "KnownFileSize": 197780353722,
      "LastBackupDate": "2023-11-17T04:00:09+01:00",
      "BackupListCount": 4,
      "TotalQuotaSpace": 0,
      "FreeQuotaSpace": 0,
      "AssignedQuotaSpace": -1,
      "ReportedQuotaError": false,
      "ReportedQuotaWarning": false,
      "MainOperation": "Backup",
      "ParsedResult": "Success",
      "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
      "EndTime": "0001-01-01T00:00:00",
      "BeginTime": "2023-11-17T03:00:01.164061Z",
      "Duration": "00:00:00",
      "MessagesActualLength": 0,
      "WarningsActualLength": 0,
      "ErrorsActualLength": 0,
      "Messages": null,
      "Warnings": null,
      "Errors": null
    }
  },
  "RepairResults": null,
  "TestResults": {
    "MainOperation": "Test",
    "VerificationsActualLength": 3,
    "Verifications": [
      {
        "Key": "duplicati-20231117T030009Z.dlist.zip.aes",
        "Value": []
      },
      {
        "Key": "duplicati-i1261b0ecc6c74d9c8a9fdce4421568f2.dindex.zip.aes",
        "Value": []
      },
      {
        "Key": "duplicati-b60c52363057d48f5b41ad5b044b6333c.dblock.zip.aes",
        "Value": []
      }
    ],
    "ParsedResult": "Success",
    "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
    "EndTime": "2023-11-17T03:14:52.167867Z",
    "BeginTime": "2023-11-17T03:14:35.21132Z",
    "Duration": "00:00:16.9565470",
    "MessagesActualLength": 0,
    "WarningsActualLength": 0,
    "ErrorsActualLength": 0,
    "Messages": null,
    "Warnings": null,
    "Errors": null,
    "BackendStatistics": {
      "RemoteCalls": 9,
      "BytesUploaded": 32211559,
      "BytesDownloaded": 57966071,
      "FilesUploaded": 3,
      "FilesDownloaded": 3,
      "FilesDeleted": 1,
      "FoldersCreated": 0,
      "RetryAttempts": 0,
      "UnknownFileSize": 0,
      "UnknownFileCount": 0,
      "KnownFileCount": 7554,
      "KnownFileSize": 197780353722,
      "LastBackupDate": "2023-11-17T04:00:09+01:00",
      "BackupListCount": 4,
      "TotalQuotaSpace": 0,
      "FreeQuotaSpace": 0,
      "AssignedQuotaSpace": -1,
      "ReportedQuotaError": false,
      "ReportedQuotaWarning": false,
      "MainOperation": "Backup",
      "ParsedResult": "Success",
      "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
      "EndTime": "0001-01-01T00:00:00",
      "BeginTime": "2023-11-17T03:00:01.164061Z",
      "Duration": "00:00:00",
      "MessagesActualLength": 0,
      "WarningsActualLength": 0,
      "ErrorsActualLength": 0,
      "Messages": null,
      "Warnings": null,
      "Errors": null
    }
  },
  "ParsedResult": "Warning",
  "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
  "EndTime": "2023-11-17T03:14:53.311728Z",
  "BeginTime": "2023-11-17T03:00:01.164003Z",
  "Duration": "00:14:52.1477250",
  "MessagesActualLength": 27,
  "WarningsActualLength": 2542,
  "ErrorsActualLength": 0,
  "Messages": [
    "2023-11-17 04:00:09 +01 - [Information-Duplicati.Library.Main.Controller-StartingOperation]: The backup opereation has started",
    "2023-11-17 04:05:31 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Started:  ()",
    "2023-11-17 04:05:39 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Completed:  (7,38 KB)",
    "2023-11-17 04:11:23 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-b2082bcc69224491b95705681b6eaf0f9.dblock.zip.aes (25,35 MB)",
    "2023-11-17 04:12:27 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-b2082bcc69224491b95705681b6eaf0f9.dblock.zip.aes (25,35 MB)",
    "2023-11-17 04:12:35 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-ie4d1a655a06c4d8581e7107e22ab6a2e.dindex.zip.aes (66,06 KB)",
    "2023-11-17 04:12:36 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-ie4d1a655a06c4d8581e7107e22ab6a2e.dindex.zip.aes (66,06 KB)",
    "2023-11-17 04:12:38 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-20231117T030009Z.dlist.zip.aes (5,31 MB)",
    "2023-11-17 04:12:47 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-20231117T030009Z.dlist.zip.aes (5,31 MB)",
    "2023-11-17 04:12:47 +01 - [Information-Duplicati.Library.Main.Operation.DeleteHandler:RetentionPolicy-StartCheck]: Start checking if backups can be removed",
    "2023-11-17 04:12:47 +01 - [Information-Duplicati.Library.Main.Operation.DeleteHandler:RetentionPolicy-FramesAndIntervals]: Time frames and intervals pairs: 7.00:00:00 / 1.00:00:00, 28.00:00:00 / 7.00:00:00, 365.00:00:00 / 31.00:00:00",
    "2023-11-17 04:12:47 +01 - [Information-Duplicati.Library.Main.Operation.DeleteHandler:RetentionPolicy-BackupList]: Backups to consider: 11/16/2023 4:00:11 AM, 11/15/2023 4:00:32 AM, 11/13/2023 7:24:44 AM, 11/12/2023 8:20:19 PM",
    "2023-11-17 04:12:47 +01 - [Information-Duplicati.Library.Main.Operation.DeleteHandler:RetentionPolicy-BackupsToDelete]: Backups outside of all time frames and thus getting deleted: ",
    "2023-11-17 04:12:47 +01 - [Information-Duplicati.Library.Main.Operation.DeleteHandler:RetentionPolicy-AllBackupsToDelete]: All backups to delete: 11/16/2023 4:00:11 AM",
    "2023-11-17 04:12:47 +01 - [Information-Duplicati.Library.Main.Operation.DeleteHandler-DeleteRemoteFileset]: Deleting 1 remote fileset(s) ...",
    "2023-11-17 04:14:10 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Delete - Started: duplicati-20231116T030011Z.dlist.zip.aes (5,31 MB)",
    "2023-11-17 04:14:11 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Delete - Completed: duplicati-20231116T030011Z.dlist.zip.aes (5,31 MB)",
    "2023-11-17 04:14:11 +01 - [Information-Duplicati.Library.Main.Operation.DeleteHandler-DeleteResults]: Deleted 1 remote fileset(s)",
    "2023-11-17 04:14:24 +01 - [Information-Duplicati.Library.Main.Database.LocalDeleteDatabase-CompactReason]: Compacting not required",
    "2023-11-17 04:14:25 +01 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: List - Started:  ()"
  ],
  "Warnings": [
    "2023-11-17 04:07:03 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/PhotoLibrary/2023/05/wrGd6jU.mp4",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/08/PXL_20230801_144130318.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/08/PXL_20230801_144136062.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/08/PXL_20230801_151226650.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-05-07-41-22-108.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-06-18-38-43-978.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-06-18-38-53-809.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-08-11-49-28-196.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-09-11-25-57-756.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-10-09-30-21-815.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-10-09-32-32-897.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-13-07-27-22-584.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-14-18-01-05-507.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-14-18-01-51-315.jpg",
    "2023-11-17 04:07:09 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-16-13-03-35-828.jpg",
    "2023-11-17 04:07:10 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-20-17-56-29-848.jpg",
    "2023-11-17 04:07:10 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-22-10-03-39-789.jpg",
    "2023-11-17 04:07:10 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-23-21-12-08-079.jpg",
    "2023-11-17 04:07:10 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/2023-07-23-21-12-22-926.jpg",
    "2023-11-17 04:07:10 +01 - [Warning-Duplicati.Library.Main.Operation.Backup.FileBlockProcessor.FileEntry-PathProcessingFailed]: Failed to process path: /homes/User/Photos/MobileBackup/Device/DCIM/Camera/2023/07/PXL_20230723_211400442.jpg"
  ],
  "Errors": [],
  "BackendStatistics": {
    "RemoteCalls": 9,
    "BytesUploaded": 32211559,
    "BytesDownloaded": 57966071,
    "FilesUploaded": 3,
    "FilesDownloaded": 3,
    "FilesDeleted": 1,
    "FoldersCreated": 0,
    "RetryAttempts": 0,
    "UnknownFileSize": 0,
    "UnknownFileCount": 0,
    "KnownFileCount": 7554,
    "KnownFileSize": 197780353722,
    "LastBackupDate": "2023-11-17T04:00:09+01:00",
    "BackupListCount": 4,
    "TotalQuotaSpace": 0,
    "FreeQuotaSpace": 0,
    "AssignedQuotaSpace": -1,
    "ReportedQuotaError": false,
    "ReportedQuotaWarning": false,
    "MainOperation": "Backup",
    "ParsedResult": "Success",
    "Version": "2.0.7.1 (2.0.7.1_beta_2023-05-25)",
    "EndTime": "0001-01-01T00:00:00",
    "BeginTime": "2023-11-17T03:00:01.164061Z",
    "Duration": "00:00:00",
    "MessagesActualLength": 0,
    "WarningsActualLength": 0,
    "ErrorsActualLength": 0,
    "Messages": null,
    "Warnings": null,
    "Errors": null
  }
}
        

The stored log is unfortunately hiding the actual error messages. This will be fixed in the next release, but for now you need to go to the server log on the about page. I think the same warnings should also be there. If not, please run the backup again and keep the live log (also on that page) open on Information level in a second tab.

Without the error messages I can’t tell you what the reason is.

To get less uninformative message, it’s even possible to run the live log at warning level and when a warning happens, click on it to display the full (exception) message.