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Date: Sat, 30 Jul 2016 19:16:54 +0300
From: Lars Wirzenius <liw@liw.fi>
To: Stefano Zacchiroli <zack@upsilon.cc>
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Cc: obnam-dev@obnam.org
Subject: Re: injecting old backup generations
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On Sun, Jul 24, 2016 at 12:45:48PM +0200, Stefano Zacchiroli wrote:
> Hey Lars, thanks for your answer! All looks good to me, but I do have a
> question about a specific point you raised:
>=20
> On Sun, Jul 24, 2016 at 12:42:46PM +0300, Lars Wirzenius wrote:
> > I don't see a need to do the reverse hook for restoring.
>=20
> Why?
>=20
> Aside from the design elegance that round-tripping has in general,
> without the converse mapping people would be unable to just restore a
> system in place.
Obnam already doesn't restoring things in place. It only allows
restoring to an empty directory, or a directory that doesn't exist and
Obnam creates. For anything else you'll need to use "obnam mount" and
cp, rsync, or some other standard file copying tool.
Round-tripping can have a design elegance, but I'd really like to have
a real use case for why it should be implemented.
--=20
Schr=F6dinger's backup hypothesis: the condition of any backup is
undefined until a restore is attempted. -- andrewsh
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