On Fri, Sep 24, 2004 at 01:36:23AM +0100, Niall O Broin wrote:
> However, I would like to be able to maintain as many generations of backup on
> each disk as possible. In the nature of things much of the data from one
> archival backup to the next will remain unchanged. To that end there are a
> few projects (I could only find one now - bontmia - but I know I have read of
> others before) which use rsync with some scripting to maintain multiple
> generations of backups on a disk, where any files which don't vary from
> backup_n to backup_n+1 are in fact not saved in backup_n+1 but are instead
> replaced by hard links to the corresponding file in backup_n. The advantage
> of this is both that it saves disk space, and that is more convenient to use
> for restore than amanda.
>> So the question is - do any of you have any experience with any of these
> tools, and what do you think of them?
Haven't used any tools, but this was posted to the list back in July:
http://lists.canonical.org/pipermail/kragen-hacks/2004-July/000400.html
Take a look at the section "Copy-on-write backups" - it seems to do what
you want in about 11 lines of shell script.
Andrew
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