On Wed, 21 Oct 2009 at 20:54, Alex Samad wrote:
On Wed, Oct 21, 2009 at 12:56:12AM -0700, plug bert wrote:
Hello All,
Is it possible to delete the initial mirror made by rdiff-backup after an
incremental backup is made?
We're looking into ways of performing incremental backups for mbox-style
mailboxes; is this setup possible:
Sunday: make an initial mirror
Monday - Saturday: schedule incremental backup, *delete* initial mirror
Sunday: make initial mirror(i.e. reformat the mirror drive, start from scratch)
Monday - Saturday : incremental backup again
Let's say someone deleted a file on Wednesday; *without* the initial
mirror, is it possible to restore the file?
i think you can use remove older than 7B - mean delete anything older
than 7 runs or 7D for delate any info older than 7 days.
Not sure if rdiff-backup has the concept of full / incremental -
although it incrementally updates the backup.
As I understand things, and assuming I understand your goals,
Alex is correct here. If your goal is to always have a valid
backup, but to not keep data around that is older than a week
because of storage concerns, then what you want to do with
rdiff-backup is make an initial backup, and then after every
daily incremental backup, do an rdiff-backup --remove-older-than 7d
on your backup tree.
rdiff-backup keeps the backup tree in sync with the current
tree, and maintains _older_ revisions by using reverse diffs
(as someone else pointed out). So by using this scheme you
will always have a current complete backup, and you will also
always have the last seven days of changes. So if someone
deletes a file on Wednesday, it will remain available for
restore until the following Wednesday.
--David
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