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Re: [Bacula-users] Era of virtual machines (block level differentials and incrementals)?
2009-06-02 05:27:04
Hi:
My 2 cents about backing up block level. I think that could be interesting for Bacula in a medium future to take a look at the file system btrfs ( actually developed by Oracle ). Among other features, it mantains a bitmap of OS blocks changed in the file system, afaik, querying this bitmap allows to back up only the blocks changed from the last backup. Of course this solution needs Bacula side code, but can benefit ( in the future ) the backup and restore of big filesystems based on btrfs - immo, when btrfs will be stable and in production, will be one of the industry standard for GNU/Linux based servers -.
Regards
D.
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