rsync suddenly hanging indefinitely during transfers

Question

For the past few years, I have been using an rsync one-liner to back up important folders on my Mac Mini desktop (OSX 10.9, 2.5 GHz i5, 4 GB RAM) to a FreeNAS box (0.7.2 Sabanda

Answer 1

Try using --whole-file/-W. This command disables the rsync delta-transfer algorithm. That is what worked for us (WSL to OSX)

our full sync flags were -avWPle

(e was because we were using ssh, and that has to be the last flag)