Fastest way to restore part of a backup

phdevpro · January 20, 2024, 4:28pm

Thank you guys,
solved removing targetpath but I honestly I don’t understand why targetpath is giving issue.
Yes is a dump of a DB

ts678 · January 20, 2024, 5:46pm

I think it’s a bug for a rare case. I just filed an issue:

github.com/duplicati/duplicati

Duplicati.CommandLine.RecoveryTool.exe fails single-file restore if --targetpath is used

opened 05:45PM - 20 Jan 24 UTC

ts678

- [x] I have searched open and closed issues for duplicates. - [x] I have searc…hed the [forum](https://forum.duplicati.com) for related topics. ---------------------------------------- ## Environment info - **Duplicati version**: 2.0.7.100 Canary and earlier - **Operating system**: Windows and Linux - **Backend**: N/A ## Description Using `--targetpath` with RecoveryTool for single-file restore fails in `Removing common prefix` step, giving message starting with: > error: System.ArgumentOutOfRangeException: startIndex cannot be larger than length of string. ## Steps to reproduce 1. Backup a short file. 1. Use RecoveryTool steps, e.g. as documented around [Restoring files using the Recovery Tool](https://duplicati.readthedocs.io/en/latest/08-disaster-recovery/#restoring-files-using-the-recovery-tool) to restore it using a `--targetpath`. - **Actual result**: Fails as noted above. See details below. - **Expected result**: Works Example: ``` C:\Program Files\Duplicati 2>mkdir \tmp\recovery_work C:\Program Files\Duplicati 2>mkdir \tmp\recovery_file C:\Program Files\Duplicati 2>Duplicati.CommandLine.RecoveryTool.exe download "file://C:\Duplicati\duplicati-2.0.7.100_canary_2023-12-27\RUN\test 3\\" C:\tmp\recovery_work Listing files on backend: file ... Found 3 files 0: duplicati-20240118T213530Z.dlist.zip - downloading (649 bytes)... done! 1: duplicati-b2d60dba739d645adb98f522a6d89ad72.dblock.zip - downloading (751 bytes)... done! 2: duplicati-id62e5faa937644a2b2dde8b3a484cf9d.dindex.zip - Filetype Index, skipping Download complete, of 3 remote files, 0 were downloaded with 0 errors C:\Program Files\Duplicati 2>Duplicati.CommandLine.RecoveryTool.exe index C:\tmp\recovery_work Processing 2 files 0: C:\tmp\recovery_work\duplicati-20240118T213530Z.dlist.zip - Filetype Files, skipping 0: C:\tmp\recovery_work\duplicati-b2d60dba739d645adb98f522a6d89ad72.dblock.zip 3 hashes found, sorting ... done! Merging 3 hashes ... done! Processed 1 files and found 3 hashes C:\Program Files\Duplicati 2>Duplicati.CommandLine.RecoveryTool.exe restore C:\tmp\recovery_work --targetpath="C:\tmp\recovery_file" Using set 0 with timestamp 1/18/2024 4:35:30 PM Building lookup table for file hashes Index file has 3 hashes in total Building lookup table with 2 entries, giving increments of 1 Computing restore path Restoring 1 files to C:\tmp\recovery_file Removing common prefix C:\backup source\short.txt\ from files error: System.ArgumentOutOfRangeException: startIndex cannot be larger than length of string. Parameter name: startIndex at System.String.Substring(Int32 startIndex, Int32 length) at Duplicati.CommandLine.RecoveryTool.Restore.MapToRestorePath(String path, String prefixpath, String restorepath) at Duplicati.CommandLine.RecoveryTool.Restore.Run(List`1 args, Dictionary`2 options, IFilter filter) C:\Program Files\Duplicati 2>Duplicati.CommandLine.RecoveryTool.exe download "file://C:\Duplicati\duplicati-2.0.7.100_canary_2023-12-27\RUN\test 3\\" "C:\tmp\recovery_work" C:\Program Files\Duplicati 2>del "C:\backup source\short.txt" C:\Program Files\Duplicati 2>Duplicati.CommandLine.RecoveryTool.exe restore C:\tmp\recovery_work Using set 0 with timestamp 1/18/2024 4:35:30 PM Building lookup table for file hashes Index file has 3 hashes in total Building lookup table with 2 entries, giving increments of 1 Restoring 1 files to original position Removing common prefix C:\backup source\short.txt\ from files 0: C:\backup source\short.txt (94 bytes) done! C:\Program Files\Duplicati 2> ``` [Fastest way to restore part of a backup](https://forum.duplicati.com/t/fastest-way-to-restore-part-of-a-backup/10849/21?u=ts678) shows removing `--targetpath` avoids this on Linux. [Inconsistency in file size on restore](https://forum.duplicati.com/t/inconsistency-in-file-size-on-restore/2045/19?u=ts678) shows the same for Windows, and above that, the [suspected problem with the code is discussed](https://forum.duplicati.com/t/inconsistency-in-file-size-on-restore/2045/17?u=ts678). ## Screenshots ## Debug log