Date: Mon, 18 Jul 2005 12:37:02 +0100 From: Nick Barnes <Nick.Barnes@pobox.com> To: Alex Zbyslaw <xfb52@dial.pipex.com> Cc: freebsd-questions@freebsd.org Subject: Re: better disk reliability on a desktop machine Message-ID: <60857.1121686622@thrush.ravenbrook.com> In-Reply-To: <42D84DA3.3000304@dial.pipex.com> from Alex Zbyslaw <xfb52@dial.pipex.com> of "Sat, 16 Jul 2005 00:58:27 %2B0100"
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At 2005-07-15 23:58:27+0000, Alex Zbyslaw writes: > Nick Barnes wrote: > > >Here are my previous questions on the related subject, some 4 years > >ago now: > > > ><http://docs.freebsd.org/cgi/getmsg.cgi?fetch=872461+0+archive/2001/freebsd-questions/20010617.freebsd-questions>; > > > > > Shame no-one answered your badsect question. Did you ever figure it out? No. I hope to have enough time to code this up myself this time. It's a Small Matter of Programming to grovel over the filesystem to figure out what a particular sector does. I'm a little disappointed that fsdb doesn't do this. Maybe I should start by hacking on fsdb. I have recently discovered the "conv=noerror,sync" option to dd. In combination with a background shell script which repeatedly runs "atacontrol mode 0 udma6 udma6", this lets me recover all the readable bits from a broken filesystem quite fast. Nick B
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