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Date:      Sat, 19 Jul 2008 08:56:28 +0200
From:      Peter Boosten <peter@boosten.org>
To:        Malcolm Kay <malcolm.kay@internode.on.net>
Cc:        freebsd-questions@freebsd.org
Subject:   Re: dump and restore
Message-ID:  <4881901C.8000504@boosten.org>
In-Reply-To: <200807191137.21771.malcolm.kay@internode.on.net>
References:  <48810956.5090905@boosten.org> <200807191137.21771.malcolm.kay@internode.on.net>

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Malcolm Kay wrote:
> On Sat, 19 Jul 2008 06:51 am, Peter Boosten wrote:
>>
>> The /usr/ partition was 74Gb, and it took (according to dump
>> 52631 seconds (~ 14.5 hours) to copy. Both disks are IDE, in
>> the same machine on different IDE controllers.
>>
> The time for dump/restore normally depends more on the occupancy 
> of the partition than its actual size. This is one reason why we 
> avoid using dd for this purpose as we must then copy the entire
> 74Gb rather than just that used.
> 

Hmmm, I didn't even know it was possible to dump a partition unmounted. 
Try that next time then. The actual partition size was ~200GB, but 
around 74Gb data.

Thanks all for your answers.

Peter

-- 
http://www.boosten.org



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