I think the hashing of the files is worth the overhead. At work we currently keep 3 months of backups on our backup server ~ 1.4TBytes of data.
I would like the hash values to be available for reporting against, so that I can also do the equ of tripwire on the servers. ie these files changed, these files were added and these files were deleted. At the moment I find a lot of false positives. ie a file is backed up when it has not changed at all. When I was first reading about rdiff-backup, and that it used rsync-lib, it seemed to be a side affect of the rsync library. It had to do with the method that rsync figured out what had changed. F. On Thu, 2005-10-27 at 13:44 +0200, Wiebe Cazemier wrote: > Ben Escoto wrote: > > Another problem is that we would have to rewrite the mirror_metadata > > file each time. If there was a bug in rdiff-backup or a disk > > corruption, and the main file was lost, we would lose all the metadata > > information. I don't have any specific worry in mind here, it just > > makes me uneasy. > > This is a genuine concern. Remember I corrupted my external HD severly with > USB > errors? That sort of thing can happen. > > Just two days ago, I had a similair situation. My computer suddenly became > very > unstable, probably because I did rrmod -f on a module which I couldn't get > un-used. At first I suspected my HD, so I made a backup as soon as I could. > It > crashed as well. Later, when I diagnosed my disc and restarted my system, I > ran > a new backup. I was very glad the failed one got rolled back. > > I know you can save a temporary mirror_metadata as a working version, but if > rdiff-backup had crashed writing the temp version over the orignal one, you > are > bust. Or, power can fail suddenly. Anything can happen... > > Anyway, it's good to guard against the unexpected and unprobable. > > > _______________________________________________ > rdiff-backup-users mailing list at rdiff-backup-users@nongnu.org > http://lists.nongnu.org/mailman/listinfo/rdiff-backup-users > Wiki URL: http://rdiff-backup.solutionsfirst.com.au/index.php/RdiffBackupWiki > >
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