On Sat, Mar 09, 2013 at 07:41:24PM -0500, backu...@kosowsky.org wrote: > Holger Parplies wrote at about 02:04:05 +0100 on Saturday, March 9, 2013: > > Hi, > > > > Peter Carlsson wrote on 2013-03-08 23:21:38 +0100 [[BackupPC-users] > Archiving incremental backups?]: > > > Hello! > > > > > > Is it possible to archive only the incremental part of a backup? > > > > no, I don't think that is supported, and I also don't think it is a good > > idea :-). > > > > > I would like to make a tar archive only of the files that is part of an > > > incremental backup. > > > > What exactly are you trying to achieve? You are describing the wrong step > > toward an unknown goal. We can't give you good advice without knowing what > > you want to do. > > > > In short, a tar file of a full backup + one (or more) tar files of > incremental > > backups *do not* equal a snapshot of your source file system at the point > of > > the last incremental, simply because you lose all information about files > > being deleted (a tar file cannot represent files that are supposed to be > > deleted on extraction, as far as I know). Of course, you might not have > this > > information in your BackupPC history, if you are using tar or smb > transport, > > but you can fix that by switching to rsync(d), and your archives will still > > only be tar files. > > > > However, if he is talking about 'tarring' the pc tree component for a > BackupPC incremental backup, then the deletions are indeed encoded in > the attrib files, though I am not sure how he would intend to > reconstruct it all in practice without some code to glue it back > together properly unless he is already has a copy of the fulls and is > maintaining a full incremental chain... > > That being said, if that is what he means, he could just literally tar > the incremental backup tree... however, he would still lose the > pooling benefits...
Hi, I realize after yours and others explanations, that I have not thought about all the shortcomings, but I was thinking this could be a good compromise. This would allow me (at least with some effort) to restore modified files even if a crash happened between two full archives. I will go back to my drawing board and think more about what I want to achieve, now that I have additional information. Best regards, Peter Carlsson ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar _______________________________________________ BackupPC-users mailing list BackupPC-users@lists.sourceforge.net List: https://lists.sourceforge.net/lists/listinfo/backuppc-users Wiki: http://backuppc.wiki.sourceforge.net Project: http://backuppc.sourceforge.net/
