On Sat, Nov 7, 2009 at 11:29 AM, Jerry Feldman <g...@blu.org> wrote: > On 11/07/2009 10:21 AM, Alan Johnson wrote: > > > Because I'm too lazy to RTFM myself, does rsnapshot take care of > > clearing out older data to make room for new, or does that need to be > > handled separately? I believe backkuppc takes care of that, if my > > memory serves, but again, it was pretty complicated to get going. > > > Yes. > It maintains 1 directory for each backup for instance: > ...
> remember there are not 19 copies of each file, there is only 1 copy of > each file that has not been changed. Also, when daily is run it first > removes the oldest daily and renames daily.[0-5] to daily.[1-6], then > renames the oldest hourly (hourly.6) to daily.0. So, the only actual > rsyncs are done on the hourly. Also note that the dates on the monthlies > are going to be over a month old because they are simply a renaming of > the latest daily. > That's all very good, and typical of *nix systems (a la logrotate), but IMHO, a perfect system would not throw away anything until there was not enough space for the new. As you add systems/data, you loose history, but you can add storage when you want more history rather than when you are worried about having enough room for the next backup. I have an rsync-based script that I wrote long before I heard about rsnapshot that first checks to make sure there is enough room on the store by deleting oldest snapshots first before each iteration of a server-and-dir loop, but it would be nice if the backup tool could manage that along the way. > Note that this has 19 links. I'm probably doing an overkill but I am a > bit paranoid since I had a crash last year, and my backup was flawed. I > also have a lot of excluded files such as Firefox caches. > Nah, this is the very reasoning I prefer the remove-only-when-low-on-space system: if you have the space, keep the history. =) You have at least the latest snapshot off site too? There are plenty of very cheap on-line storage options out there. Don't trust them with your data? (and you shouldn't) Just mount a dir on their system with encfs! Linux rocks!
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