I would like to suggest a feature: When you mirror very
large sites with many single files (100K+), it takes very
long to continue (not update!, there is no further
downloading anymore) an interrupted mirroring, because of
the "quick" rescanning and rebuilding of the indexes. This
can be hours, even on a fast machine, and days on slow ones.
Is there a way to make this quicker, like saving the indexes
to disk when aborting mirroring? From my, maybe a bit naive
point of view, there must be a way, just to continue at the
same position as before.

Thanks!