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Date:      Fri, 5 Sep 2003 16:04:21 -0400
From:      Jim Durham <durham@jcdurham.com>
To:        Malcolm Kay <malcolm.kay@internode.on.net>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: rsync problem
Message-ID:  <200309051604.21653.durham@jcdurham.com>
In-Reply-To: <200309030129.27754.malcolm.kay@internode.on.net>
References:  <1062511023.4165.5.camel@cronos.home.vsb> <200309030129.27754.malcolm.kay@internode.on.net>

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On Tuesday 02 September 2003 11:59 am, Malcolm Kay wrote:
> On Tue, 2 Sep 2003 23:27, Guy Van Sanden wrote:
> > Hello
> >
> > I'm using rsync to sort of mirror two 40GB disks (once a day).
> > All partitions work as expected, but root is weird (and as you
> > can see below, I sort of made it too small).
> >
> > I use this command:
> > /usr/local/bin/rsync -ax --delete / /mirror/rootfs
> >
> > But this is what I'm getting:
> > df -m
> > Filesystem  1M-blocks Used Avail Capacity  Mounted on
> > /dev/ad0s1a       154   71    70    51%    /
> > /dev/ad1s1a       154  138     4    97%    /mirror/rootfs
> >
> > So, there's a 67 MB difference between both.
> > I started out wite a cleanly formatted mirror (UFS2)
> >
> > My system is FreeBSD 5.0 RELEASE-p11
> >
> > Thanks for any help
> >
> > Guy
>
> I expect rsync does not recognise hard linked files as such and
> makes separate images of each directory link. Looking through
> /stand on my 4.8 system I see that this would create about 60Mb
> extra.
>
> You might do better with dump and restore:
> # cd /miiror/rootfs
> # dump -0 -a -f - / | restore -r -f -
>
> Malcolm
>

rsync -H   preserves hard links.  Maybe try rsync -Hax --delete ?

-Jim



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