touch option for -c ?
Hi, I hope this hasn't been asked before ... I couldn't find it anyway. To the best of my knowledge, without the -c option rsync judges file differences based on date stamp and file size. This speeds things up of course but can be problematic when date stamps of two otherwise identical files are uncontrollable (say when they come from two different sources, such as installed from CD vs FTP). So -c is called for, right? Is there any way to have rsync syncronize the date stamps of the files on the destination host (even the ones that aren't changed) so that subsequent rsyncs can omit -c? Thanks, Rich -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.catb.org/~esr/faqs/smart-questions.html
Concurrent tree-mapping (2.5.2)
Hi, maybe this is fixed in the current version, but in listening to the disk drives on two rsyncing hosts in the same room, it was apparent that the target machine only started mapping out its directory structure after the source machine had finished doing so, doubling the startup time. Seems like concurrency would be worth adding if it's not too much trouble. Rich -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.tuxedo.org/~esr/faqs/smart-questions.html
testing
123 -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.tuxedo.org/~esr/faqs/smart-questions.html
symmetric mirroring (was testing)
Sorry for the junk mail, it seems my last post was lost in the ether, despite being successfully delivered to lists.samba.org (!) Very frustrating, since I didn't keep a copy of it. My question was regarding what might be called symmetric mirroring, where two sets of identical files, both being simultaneously updated, are periodically syncronized. Has anyone implemented this? I posted a script which I think would work. If my original post doesn't show up I guess I'll have to type it in again. At any rate, implementing it in rsync doesn't seem like it would be too difficult. Thanks, Rich -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.tuxedo.org/~esr/faqs/smart-questions.html
Re: symmetric mirroring (was testing)
Hi Martin, I guess I need to be more specific. I have a unix user who has unix machines at home and at work. He wants local access to the same set of files whether he's at home or at work. If each side updates a non-overlapping set of files you can do this using --update to push only the newer file to each side. That much I figured out, but a problem arises when files are created or deleted. If a file on A has no counterpart on B, should it be deleted or copied over to B? My primitive idea is just to compare the date stamp (or inode modification time) of the file with the time of the last rsync, and either copy it over if it's newer, or delete it. Not very pretty, I know, but it would suffice for his purposes, and it would be easy to implement with an option like --symmetric=date_stamp_file where date_stamp_file is touched every time rsync runs. Ideally this would cause rsync to run in a duplex mode where files could be copied in either direction depending on which is newer. But that part sounds like a pretty major project. If single files are updated on both sides you need a content-dependent way of merging them, which is out of the scope of rsync. Have a look at the Unison tool. Thanks for the tip, it sounds interesting. I'll check it out! Rich -- To unsubscribe or change options: http://lists.samba.org/mailman/listinfo/rsync Before posting, read: http://www.tuxedo.org/~esr/faqs/smart-questions.html
