FreeFileSync Forum

I have a vanilla Linux Mint, didn't dabble in disabling mtime. It just seems Java does this, newly created files do not have modification time (which sounds reasonable, they were just created, not modified).

Don't want to dabble with filters ignoring build files, there are no problems ext4 to ext4 ...

They definitely are. I spent a lot of time confirming this, checking file sizes etc.

I had a strange problem when Maven repository files copied from ext4 drive to exfat drive didn't want to copy, saying file is open/locked and renaming is impossible. There were two sets of files like this:

.../.m2/repository/com/github/JnCrMx/discord-game-sdk4j/v0.5.5/discord-game-sdk4j-v0.5.5 ...

Some files on my ext4 drive source have no modification date (mostly files creating during Java project build). They always appear on comparison as files to copy when using the default size & date method. When mirrored to exfat drive, this sets their date to 1980-01-01 01:00:00. When mirrored to ...