Robin Lee Powell wrote: > I've been using my own scripts > http://digitalkingdom.org/~rlpowell/hobbies/backups.html to remotely > mirror backuppc's date in an encrypted fashion. > > The problem is, the time rsync takes seems to keep growing. I > expect this to continue more-or-less without bound, and it's already > pretty onerous. > > So, I need to find a way to rsync on a per-file basis, but still be > encrypted. Hence, questions: > > > 1. Does anyone know a way to mount a filesystem so that only one > process can see it? If I could do that, I could have an encrypted > loop filesystem mounted remotely for rsync's sole use, and just > rsync into that. I'm not willing to have the encripted filesystem > mounted globally on the remote machine, as I am not the sole user, > nor do I own it. > > 2. Does backuppc ever change pool files (rather than simply replace > them)? If the answer is no, I don't need to worry about the > rsync-friendliness of any per-file encryption method I might use. > > 3. Ignoring logs and such, is anything outside of the pool or cpool > dir ever *not* a hard link into the pool/cpool dir? If the answer > is no, then per-file encryption is relatively easy. One way is to > rsync -H a copy of all backuppc data and encrypt each pool file (in > a way that doesn't break hard links) and then rsync that encrypted > copy out remotely. Another way is to roll encryption in to the > backuppc compression program. > > Can anyone think of other ways to solve this problem?
It is generally believed on this list (I believe) that it's not feasible to use something as 'high-level' as rsync to replicate BackupPC's pool. The amount of memory needed by rsync will just explode because of all the hardlinks. Usually people have been using low-level tools like dd or dump to copy a complete pool filesystem to another one. Nils Breunese. ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ 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/
