Date: Wed, 01 Jun 2016 15:37:57 -0500 From: Brandon J. Wandersee <brandon.wandersee@gmail.com> To: Phil Eaton <philneaton95@gmail.com> Cc: Steve O'Hara-Smith <steve@sohara.org>, freebsd-questions <freebsd-questions@freebsd.org>, Luca Ferrari <fluca1978@infinito.it> Subject: Re: rsync or git backups? Message-ID: <86h9dcbq6y.fsf@WorkBox.Home> In-Reply-To: <CAByiw%2BrFRdrg4y4xZuhC5cmapDzcD86_UcxxXXH1vG%2BFLZD51g@mail.gmail.com> References: <CAKoxK%2B4MuSFi7ctcAXVzZ61mXzCsnP-qsWxEOTor_T1SFgc-cg@mail.gmail.com> <20160601113332.5e250d300d770ab04e9c9cc2@sohara.org> <86k2i8kc1o.fsf@WorkBox.Home> <CAByiw%2BrFRdrg4y4xZuhC5cmapDzcD86_UcxxXXH1vG%2BFLZD51g@mail.gmail.com>
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Phil Eaton writes: > Is there a good article comparing rsnapshot and zfs-snapshots? I don't know of any such comparison, but they are not comparable in any technical sense. Here is the gist of how rsnapshot works, supposing you configure it to make daily backups: 1) On the first run, a complete backup is created in a folder named "daily.0" at the destination. 2) On the second run, the original backup is rotated to "daily.1". Copies of all changed files are then copied to a new "daily.0" folder, and hard links are created to all other files in the initial backup, so only the new/modified files take up additional space and each backup folder appears to contain a complete backup that can be restored. 3) This repeats for every backup, to a maximum number set in the configuration file. You can configure multiple backup intervals and run cron/anacron/periodic jobs for each one. So when using an external or remote destination the general effect is the same. Storing the backups locally will double the space consumed by the backed-up data, however. -- :: Brandon J. Wandersee :: brandon.wandersee@gmail.com :: -------------------------------------------------- :: 'The best design is as little design as possible.' :: --- Dieter Rams ----------------------------------
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