add --contents-of-transferred to dsync?

[markmoe19]

When using dsync, we like to do a pass with --contents ... this is, of course, slower.

Would it be possible to also have a --contents-of-transferred option? (name is just a suggestion)

The goal is to do the contents compare only of files that are newly transferred. If existing files match size and dates, then leave them alone.

In this way we can have dsync build on top of previously verified transfers if each and every run is done with --contents-of-transferred then even for final runs on migrated data, we don't have to do the full --contents check.

Note: our reason for using --contents is to be extra careful to verify that data at the destination matches data from the source. We want to verify it was written correctly is the goal. But, that is time consuming and so we don't want to have to verify it over and over again for files already transferred and verified from the last run of dsync.

Thanks!