"When I despair, I remember that all through history the way of truth and love has always won. There have been tyrants and murderers and for a time they seem invincible, but in the end, they always fall — think of it, always." Mohandas Gandhi
In a time of universal deceit - telling the truth is a revolutionary act. George Orwell

Thursday, November 08, 2007

FlyBack a TimeMachine do GNU/Linux

O nosso GNU/Linux também dispõe de algo parecido com a TimeMachine da Apple, apresentado no seu Leopard.

Existem outros projectos que pretendem implementar ou até existem antes da TimeMachine, como o rsnapshot, o TimeVault e outros como o dirvish.

"FlyBack is a snapshot-based backup tool based on rsync It creates successive backup directories mirroring the files you wish to backup, but hard-links unchanged files to the previous backup. This prevents wasting disk space while providing you with full access to all your files without any sort of recovery program. If your machine crashes, just move your external drive to your new machine and copy the latest backup using whatever file browser you normally use.

Note that this means you can selectively delete specific backups and still retain files stored in previous ones. (ie., you can delete tuesday's backup and keep monday's, without screwing up wednesday's).

Ways FlyBack Differs from Time Machine

1. There is no inotify mechanism in Linux, so FlyBack scans your entire directory structure when performing a backup.
2. No hard-linking of directories is supported under Linux, so we waste a few KBs recreating unchanged directory structures with nothing but hard-links in them."

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