Date: Fri, 31 Jan 2003 11:48:56 -0800 (PST) From: Julian Elischer <julian@elischer.org> To: Steve Byan <stephen_byan@maxtor.com> Cc: phk@freebsd.org, freebsd-fs@freebsd.org, tech-kern@netbsd.org Subject: Re: DEV_B_SIZE Message-ID: <Pine.BSF.4.21.0301311144370.45015-100000@InterJet.elischer.org> In-Reply-To: <1010FEB6-354F-11D7-B26B-00306548867E@maxtor.com>
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One thign I thought of is that it is not uncommon to 'dd' an entire filesystem from one partition to another. If we create a filesystem that is 'aligned' and we copy it to be 'unalligned', we'd have a sudden performance drop for no immediatly obvious reason. What was one write, would become a 2-sector read, modify and 2-sector write. Especially when copying from one failing drive to another with slightly different characteristics. The idea isn't bad but I think it should be sold as a 4k sector drive, with small print saying it can handle 512byte IO instead of the other way around. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-fs" in the body of the message
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