On Sun, Aug 01, 2004 at 06:20:11PM -0700, Linda A. W. wrote: > If I use the "-I" to ignore date and size as quick-check methods of > determining change, what method does it use to determine difference?
With -I, rsync does no advance determination of sameness, it just transfers all the files and lets the matching data make the transfer as small as possible. This is more expensive than -c if all the files are the same (since the receiving side reads the file twice and writes it once for each file), but could be slightly faster than -c if most of the files have changes (since the -c option makes the receiving side read the file thrice and write it once when it is different, but only reads the file once if it is the same). > So exactly how does rsync compare files for differences when date & > size are used but checksumming is not? When date & size are used, rsync skips the file when the modify time and the size is identical on the receiver and the sender for a given file. ..wayne.. -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
