On Fri, Mar 10, 2006 at 02:21:41PM -0600, Les Mikesell wrote: > Sort-of... Consider what happens if you rename a directory > containing old files. An incremental based on timestamps won't > take the files in their new locations. Dump can deal with the > renamed directory but you have to back up entire filesystems to > do it. Star has a dump-like mechanism. Gnutar has > --listed-incremental mode where it keeps a file log of the > directories traversed and their device/inode numbers to detect > renames. Rsync compares against the previous run (even in > incremental mode) and will catch them.
<http://www.davidb.org/adump/incremental.html> describes the state of my understanding of incremental backup (as of about 5 years ago) when I wrote Adump. Adump grew out of my frustration of no existing solutions being able to correctly restore an incremental backup. > Backuppc works across multiple targets. I don't think I'd trust > identical timestamps to mean anything even under unix from > one machine to another when you need to be sure the file is > really identical. True, although even backuppc/rsync now does rely on the timestamps to the same machine. Dave ------------------------------------------------------- This SF.Net email is sponsored by xPML, a groundbreaking scripting language that extends applications into web and mobile media. Attend the live webcast and join the prime developer group breaking into this new coding territory! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=110944&bid=241720&dat=121642 _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/backuppc-users http://backuppc.sourceforge.net/
