I run tests with Duplicati to see how it works.
One test was a backup of my active WINDOWS partitition “C” (using VSS and the whole bunch of exclude filter groups), and restore to a new destination (another local drive “I”). I got 0 errors and several WARNINGS for various applications running in the background, like this:
“2023-04-28 01:39:19 +02 - [Warning-Duplicati.Library.Main.Operation.RestoreHandler-PatchingFileLocalFailed]: Failed to patch file: "I:\RC\Users\CW\AppData\Roaming\Adobe\CoreSync\GUDE\gude-2023-04-24.log"
with data from local file "C:\Users\CW\AppData\Roaming\Adobe\CoreSync\GUDE\gude-2023-04-24.log",
message: The process cannot access the file "\\?\C:\Users\CW\AppData\Roaming\Adobe\CoreSync\GUDE\gude-2023-04-24.log" because it is being used by another process.”
Why is the RestoreHandler patching the restored file with anything taken from the original file?