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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