Any way to recover backup (repair and purge-broken-files don't help)?

[ts678]

@drwtsn32

But now I’m testing the deletion of dindex files to see if they are recreated properly. I deleted 1550 dindex files then ran another backup. Duplicati detected the missing files and prompted me to Repair. I ran the Repair and 1548 of the 1550 files were recreated without issue. Two of the files caused this type of error:

2019-10-21 14:37:32 -07 - [Error-Duplicati.Library.Main.Operation.RepairHandler-CleanupMissingFileError]: Failed to perform cleanup for missing file: duplicati-i40c3ea119a344bfa8d5e8e7faed60c24.dindex.zip.aes, message: Internal consistency check failed, generated index block has wrong hash, JK08SX0qCZzPHTVQ2tSqICHbTx0ddPiRp4YcXwHjkB4= vs yuJVEmzJrjO2iD9aWhWzi7XKPJ+SKReFmnrEIFYOLOs=
2019-10-21 14:37:32 -07 - [Error-Duplicati.Library.Main.Operation.RepairHandler-CleanupMissingFileError]: Failed to perform cleanup for missing file: duplicati-i94d4b285035b4fc59d77625e182ae5ce.dindex.zip.aes, message: Internal consistency check failed, generated index block has wrong hash, i+LMfmCATFXwu7A3YGHVGkU0iqD4NH1rqzZfW1Q3xO0= vs tpI5x47zReN2kh4Cf1Uu8gPLqsXhgYLBXf3Vs0k/Y2o=

Anyone know what the root cause of this is, and if there is any way to recover?

Seemed a very good fit for the dindex loss test inadvertently done by the HDD issues in current topic,
except it wasn’t reproducible for some reason. It also links to a GitHub issue that may be related and gathered a number of me-too posts, however it’s sometimes unclear if root causes are the same one.

Internal consistency check failed, generated index block has wrong hash

Original post stack trace is running RecreateMissingIndexFiles which then runs CreateIndexVolume which does have the consistency check on a GetBlocklistsAsync which runs the faulty GetBlocklists.