On Mon, 2009-10-19 at 19:39 -0700, plug bert wrote: > i noticed that rdiff-backup has the --delete-older-than option; say > you want to use rdiff-backup to back up mailboxes; after running the > initial mirror, would it be possible to delete the initial mirror the > following day, then just store the deltas indefinitely? > > Alternately, is it possible to store the deltas on a disk separate > from the intial mirror?
As a general rule, don't touch the rdiff-backup repository except through the rdiff-backup command. I've learned at least this much having used rdiff-backup extensively for a few years now. I switched to rdiff-backup from rsnapshot because with rdiff-backup, you only store the deltas of the increments, while with rsnapshot, you have a copy of the old file and the changed file. The way I understand how it works in a nutshell is you have the current snapshot data as is, and then deltas and metadata in separate files. So while you could theoretically move the deltas onto separate media every now and then, recovery doesn't look straightforward. Maybe something like AMANDA would have a more straightforward solution to your problem? -- Federico Sevilla III F S 3 Consulting Inc. http://www.fs3.ph
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