From: Neil Bothwick <neil@digimed.co.uk>
To: gentoo-user@lists.gentoo.org
Subject: Re: [gentoo-user] Copying data efficiently
Date: Sat, 17 May 2014 17:52:16 +0100 [thread overview]
Message-ID: <20140517175216.4949cc03@digimed.co.uk> (raw)
In-Reply-To: <64D50D8F-61D6-4B66-AC9B-102DFE55C7AF@stellar.eclipse.co.uk>
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On Sat, 17 May 2014 14:44:04 +0100, Stroller wrote:
> > a) Unlike other commands, pv will give you a progress bar so that you
> > know how long your back up is taking.
>
> I've been using ddrescue recently - by default it seems to be faster
> than plain old regular dd.
>
> I assume it must be possible to adjust the parameters (blocksize?) to
> speed dd up, but I just want to run the command and not have to bother
> tinkering.
Use the bs option. The default is 512, which is incredibly slow, bs=4k
makes a substantial difference. However, I usually use dcfldd these days,
whch works out the best block size to use and adds progress reporting.
--
Neil Bothwick
Never underestimate the bandwidth of a station wagon full of tapes!
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prev parent reply other threads:[~2014-05-17 16:52 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-05-17 3:33 [gentoo-user] Copying data efficiently meino.cramer
2014-05-17 7:46 ` Mick
2014-05-17 7:59 ` meino.cramer
2014-05-17 9:58 ` Neil Bothwick
2014-05-17 14:34 ` Daniel Troeder
2014-05-17 14:58 ` meino.cramer
2014-05-17 19:41 ` Mick
2014-05-17 23:23 ` Neil Bothwick
2014-05-17 13:44 ` Stroller
2014-05-17 16:52 ` Neil Bothwick [this message]
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