I have a situation where I need to mirror a directory on a Linux box managed by somebody else. This I usually do using rsync which is working well here in this situation too.
For some reason, a few files keep being retransmitted in future runs even when the rsync completes happily. Having ruled out the “need larger time window” for FAT file systems, and changing file sizes, I would really like to have rsync explain to me why it chooses to transmit these files. Various numbers of -v gave a lot of data but its like drinking from the firehose.
Is there a set of options or search terms that can make rsync do the equivalent of “EXPLAIN PLAN” for databases? Or a helper tool?