Hi, we do a 1:1 backup from our main raid to a backup raid every night with
rsync -a --delete /mnt/raid1/ /mnt/raid2 rsync is 3.09, filesystems are ext3, OS is SLES 11 SP1. The rsync process takes several hours, even if no file has changed at all. Using -vv I see that rsync compares all files every time and that takes long for some hundreds of millions of small files. Can I tell rsync it should not compare files in a directory if the directory has not changed, i.e., ctime is the same in source and target? I.e., when I have a dir x with a subdir y and a file y1 in it, I see: rsync -avv x z created directory z delta-transmission disabled for local transfer or --whole-file x/ x/y/ x/y/y1 on the first run and rsync -avv x z x/y/y1 is uptodate on every following run. Why does rsync compare y1 again? I couldn't find a solution in the mailing list or FAQ and when googling. I found a mail in this list telling that -a was the culprit and one should add -O to fix it, but it doesn't make any difference. cu, Frank -- Dipl.-Inform. Frank Steiner Web: http://www.bio.ifi.lmu.de/~steiner/ Lehrstuhl f. Bioinformatik Mail: http://www.bio.ifi.lmu.de/~steiner/m/ LMU, Amalienstr. 17 Phone: +49 89 2180-4049 80333 Muenchen, Germany Fax: +49 89 2180-99-4049 * Rekursion kann man erst verstehen, wenn man Rekursion verstanden hat. * -- Please use reply-all for most replies to avoid omitting the mailing list. To unsubscribe or change options: https://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
