Backup to WeDAV / Nextcloud never completes is getting these too. I don’t know whose Nextcloud it is.
Yours is interesting because of the “Down for maintenance” shown by the provider of your Nextcloud…
Does the provider provide any support? They possibly know oddities of their Nextcloud better than I do.
In addition to the (500) Internal Server Error. the server returns (503) Server Unavailable.
Both should be handled by Duplicati retries (until exhausted). What’s really terrible is server loses files which have been accepted without error. Duplicati can (and did) alert you, but it can’t Repair this well.
Fortunately there is the option (which you are using) to purge backup of files damaged by loss, and try backup again, which it looks like you’re doing, and though it’s only a few hours run, looks good so far…
The renaming that’s normal is that if a file upload fails, a new name is chosen for the next try, instead of guessing the results of the file under its errored try. Did it all get up, or none, or some? It doesn’t matter.
Same content is uploaded into a file with new name. Old file name that had upload error is deleted later.
2021-04-07 15:58:42 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-b11747bbc638d4f63aed592b007b44d1e.dblock.zip.aes (1,023.98 MB)
2021-04-07 16:35:32 +02 - [Retry-Duplicati.Library.Main.Operation.Backup.BackendUploader-RetryPut]: Operation Put with file duplicati-b11747bbc638d4f63aed592b007b44d1e.dblock.zip.aes attempt 1 of 288 failed with message: The remote server returned an error: (500) Internal Server Error.
2021-04-07 16:35:32 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Retrying: duplicati-b11747bbc638d4f63aed592b007b44d1e.dblock.zip.aes (1,023.98 MB)
2021-04-07 16:40:32 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Rename: duplicati-b11747bbc638d4f63aed592b007b44d1e.dblock.zip.aes (1,023.98 MB)
2021-04-07 16:40:32 +02 - [Information-Duplicati.Library.Main.Operation.Backup.BackendUploader-RenameRemoteTargetFile]: Renaming "duplicati-b11747bbc638d4f63aed592b007b44d1e.dblock.zip.aes" to "duplicati-b614afe58f6cf47b38a0fe2cd8537227a.dblock.zip.aes"
2021-04-07 16:40:32 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-b614afe58f6cf47b38a0fe2cd8537227a.dblock.zip.aes (1,023.98 MB)
2021-04-07 17:10:50 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-b614afe58f6cf47b38a0fe2cd8537227a.dblock.zip.aes (1,023.98 MB)
(long time)
2021-04-10 15:00:08 +02 - [Information-Duplicati.Library.Main.Operation.FilelistProcessor-RemoveUnwantedRemoteFile]: removing remote file listed as Deleting: duplicati-b11747bbc638d4f63aed592b007b44d1e.dblock.zip.aes
2021-04-10 15:00:08 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Delete - Started: duplicati-b11747bbc638d4f63aed592b007b44d1e.dblock.zip.aes ()
2021-04-10 15:00:10 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Delete - Completed: duplicati-b11747bbc638d4f63aed592b007b44d1e.dblock.zip.aes ()
Your missing files are both long (dblock) and short (dindex). To pick on a short one, here’s report on it:
2021-04-10 15:00:50 +02 - [Warning-Duplicati.Library.Main.Operation.FilelistProcessor-MissingFile]: Missing file: duplicati-i039620cfe25b45a0a58ecf6d1517c5b4.dindex.zip.aes
Here is its upload, which was reported as a success, yet when directory was listed later, file is missing.
2021-04-07 20:57:35 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Started: duplicati-i039620cfe25b45a0a58ecf6d1517c5b4.dindex.zip.aes (669.18 KB)
2021-04-07 20:57:36 +02 - [Information-Duplicati.Library.Main.BasicResults-BackendEvent]: Backend event: Put - Completed: duplicati-i039620cfe25b45a0a58ecf6d1517c5b4.dindex.zip.aes (669.18 KB)