Date: Tue, 2 May 2006 10:56:46 +0930 From: Greg 'groggy' Lehey <grog@FreeBSD.org> To: Jim Stapleton <stapleton.41@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: dd issues Message-ID: <20060502012645.GD81777@wantadilla.lemis.com> In-Reply-To: <80f4f2b20605011821v5e6a51c2i458af940512cf42@mail.gmail.com> References: <80f4f2b20605011644r87563a0r9141d4a62a28b98b@mail.gmail.com> <20060502000409.GZ81777@wantadilla.lemis.com> <80f4f2b20605011820w314d8852t231e65bfebf5f6e6@mail.gmail.com> <80f4f2b20605011821v5e6a51c2i458af940512cf42@mail.gmail.com>
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--6vu8ReRIjaA55nHT Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Monday, 1 May 2006 at 21:21:26 -0400, Jim Stapleton wrote: > On 5/1/06, Greg 'groggy' Lehey <grog@freebsd.org> wrote: >> Without more background in what you're trying to do (you don't even >> say what backup program or what medium you're trying to back up to), >> or what your concerns are, it's difficult to answer this question. >> There are no specific issues with block size on most archivers, but in >> general large block sizes (64 kB or larger) will give better >> performance. > > program is dd, source medium is CD, destination medium is hard > drive. That doesn't sound like a backup to me. dd isn't a backup program, and CDs are not normally things you back up. But they have a sector size of 2 kB, so you will need to transfer in multiples of 2 kB. As I said above, 64 kB or larger is a good idea. Use the conv=sync operation to transfer the last incomplete block correctly. Greg -- When replying to this message, please copy the original recipients. If you don't, I may ignore the reply or reply to the original recipients. For more information, see http://www.lemis.com/questions.html See complete headers for address and phone numbers. --6vu8ReRIjaA55nHT Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFEVrVVIubykFB6QiMRAvBrAJwO6JbqUFLXtkJhqPjJC00+VAUwGQCfVBQL TOaCm6f9EXxLMTfk7c1x95I= =dqg/ -----END PGP SIGNATURE----- --6vu8ReRIjaA55nHT--
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