Date: Tue, 29 Sep 2009 21:27:37 -0600 (MDT) From: Warren Block <wblock@wonkity.com> To: Polytropon <freebsd@edvax.de> Cc: PJ <af.gourmet@videotron.ca>, freebsd-questions@freebsd.org Subject: Re: backups & cloning Message-ID: <alpine.BSF.2.00.0909292124180.45380@wonkity.com> In-Reply-To: <20090930050805.7f9d7252.freebsd@edvax.de> References: <4AC29BE6.4000505@videotron.ca> <20090930023051.cff2b0b4.freebsd@edvax.de> <4AC2C104.7090206@videotron.ca> <20090930050805.7f9d7252.freebsd@edvax.de>
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On Wed, 30 Sep 2009, Polytropon wrote: > Forgot to mention this: > > > On Tue, 29 Sep 2009 22:23:00 -0400, PJ <af.gourmet@videotron.ca> wrote: >> 1. will the s1a slice dump the entire system, that is, the a, d, e, f >> and g slices or is it partitions? > > The ad0s1 slice (containing the a, d, e, f and g partitions) can > be copied 1:1 with dd. By using dump + restore, the partitions > need to be copied after another. In each case, the entire system > will be copied. For this purpose, even the long lasting > > # dd if=/dev/ad0 of=/dev/da0 bs=1m This copies everything on the disk, including sectors not used by a filesystem. So it usually takes a while. > # dd if=/dev/ad0 of=/dev/da0 bs=512 count=1 Not necessary, the first block was already copied, well, first. -Warren Block * Rapid City, South Dakota USA
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