https://bugs.kde.org/show_bug.cgi?id=450685
--- Comment #6 from Andrius Štikonas <andr...@stikonas.eu> --- (In reply to morashon from comment #5) > So I tested twice with btrfs partition. On first test I told KDE Partition > Manager to restore the backup overwriting the existing backed-up partition. > When running the btrfs check --repair command after closing device it > returned "Error". KDE partition manager again saw this as an unknown > partition. Well, partition type shouldn't matter and it looks like your backup file is already corrupted, so it's not restore process either. That's why I was just testing with running backing up and checking partition signature with blkid (that should be sufficient to tell whether backup is empty file or not). Would you be willing to try to compile the latest version of kpmcore and partitionmanager (and probably with some diagnostic patches later to see where things go wrong)? Right now I have no idea what's going wrong. The latest version from git does have some changes but I can't tell whether they'll help or not (when copying disk data now we open and close files just once rather for each 10 MiB chunk that we copy). By the way, copying happens here: https://invent.kde.org/system/kpmcore/-/blob/master/src/util/externalcommandhelper.cpp#L239 -- You are receiving this mail because: You are watching all bug changes.