SUMMARY *** Insufficient space error when moving files/directories between partitions with over a terabyte of free space *** STEPS TO REPRODUCE 1. Move 30Gb of files onto a partition with 1.5 Tb free OBSERVED RESULT ERROR: There is not enough space on the disk to write <filename> EXPECTED RESULT Just move the files, there is plenty of free space available on the target partition. SOFTWARE/OS VERSIONS Linux/KDE Plasma: 5.25.4 KDE Plasma Version: 5.25.4 KDE Frameworks Version: 5.97.0 Qt Version: 5.15.6 ADDITIONAL INFORMATION Could this be a result of using 64-bit btrfs partitions?
Using a Konsole window I was able to trace the problem to files greater than 1 Gb. This suggests it is not a problem with Dolphin, but with system libraries. I'm closing this as a Dolphin bug, but I have no idea where to report moving files larger than 1Gb (`mv <file> <otherPartition>`).