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[Discuss] rsnapshot vs. rdiff-backup



On 12/03/2013 03:24 PM, Richard Pieri wrote:
> Mike Small wrote:
>> Does btrfs fit in here somewhere? I was using DragonFlyBSD for awhile,
>
> Not as such, no. File system and logical volume snapshots are not
> backups. They're snapshots.
>
>
>> Also, apparently rsync itself has a --link-dest feature which maybe
>> can be used to accomplish at least some of what rsnapshot does for you,
>> you know, for the minimalists?
>
> rsnapshot rotates replicas so that the <foo>.0 directory is always the
> most recent replica at that time level (yearly, monthly, weekly,
> daily, hourly). rsync can't do that without a wrapper -- which is what
> rsnapshot really is.
>
rsnapshot can run on BSD. It uses the rsync --link-dest feature. You
generally have an hourly.0 directory. When rsnapshot runs it renames
hourly.n to hourly.n+1 and removes the oldest based on your config. It
then creates hourly.0, and uses hourly.1 as the target of --link-dest.
The daily, weekly, monthly and yearly directories are normally created
by renaming the oldest of the hourly, daily, weekly, monthly. rsnapshot
is a perl script. While rsnapshot creates snapshorts, it is really a
backup system because it creates multiple directories.

-- 
Jerry Feldman <gaf at blu.org>
Boston Linux and Unix
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