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Date:      Wed, 29 Mar 2006 10:14:19 -0300
From:      Patrick Tracanelli <eksffa@freebsdbrasil.com.br>
To:        freebsd-hackers@freebsd.org
Subject:   Re: cloning a FreeBSD HDD
Message-ID:  <442A882B.8000207@freebsdbrasil.com.br>
In-Reply-To: <200603291953.56112.doconnor@gsoft.com.au>
References:  <44296F41.1050209@osoft.us> <4429972C.5030806@freebsdbrasil.com.br>	<20060328.210412.18287651.imp@bsdimp.com> <200603291953.56112.doconnor@gsoft.com.au>

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Daniel O'Connor wrote:
> On Wednesday 29 March 2006 14:34, M. Warner Losh wrote:
> 
>>dump + restore is slow but reliabe.
> 
> 
> Faster than dd for disks that aren't full :)
> 
> It also gives you a defrag as well as allowing you to change FS options.

Yes, pretty much faster for non-full disks, even compared to paralell 
dd(1). And we always have the "-L" option to snapshot and dump(1) from 
live file systems, what makes it an interesting and completly viable 
choice to clone the disks in multiuser mode (no need to go single user).

It is my choice to copy a disk into one other. It is even possible to 
copy a disk to a slower one (again, if the source is not full and if the 
dst disk have enough space to store all data currently in use in the 
source disk), and better (customizable new partitions) results when 
copying to a larger second disk, when compared to dd(1).

-- 
Patrick Tracanelli

FreeBSD Brasil LTDA.
(31) 3281-9633 / 3281-3547
316601@sip.freebsdbrasil.com.br
http://www.freebsdbrasil.com.br
"Long live Hanin Elias, Kim Deal!"




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