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Date:      Thu, 17 May 2012 13:43:42 +0200
From:      Matthew Seaman <matthew@FreeBSD.org>
To:        Matthias Petermann <matthias@d2ux.net>
Cc:        freebsd-questions@FreeBSD.org
Subject:   Re: Filesystem dump incremental?
Message-ID:  <4FB4E46E.2040007@FreeBSD.org>
In-Reply-To: <4FB4D7AB.9030200@d2ux.net>
References:  <4FB4D7AB.9030200@d2ux.net>

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On 17/05/2012 12:49, Matthias Petermann wrote:
> currently I am experiencing something confusing. Some hours ago I did a=

> level 0 dump with the following command:
>=20
>     dump -a -0 -f /mnt/da0/backup-compaq.0.dump /
>=20
> This results in a quite big dump file. After changing a couple of files=
,
> I tried to do another dump. This time as level 1. My expectation was
> that the resulting dump would only contain the files which changed sinc=
e
> the level 0 dump.
>=20
>     dump -a -1 -f /mnt/da0/backup-compaq.1.dump /
>=20
> To my surprise this seems to generate another full dump instead of
> incremental.
>=20
> What did I miss or what mistake do I make?

You need '-u' on tose command lines in order to record the dates of your
dumps, including your initial level 0 dump, in /etc/dumpdates.

	Cheers,

	Matthew

--=20
Dr Matthew J Seaman MA, D.Phil.
PGP: http://www.infracaninophile.co.uk/pgpkey



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