Date: Fri, 19 Aug 2011 14:51:34 -0700 From: Chuck Swiger <cswiger@mac.com> To: Dan Langille <dan@langille.org> Cc: freebsd-stable@freebsd.org Subject: Re: bad sector in gmirror HDD Message-ID: <65474D95-F56F-4DC7-8029-BA7166C4E46F@mac.com> In-Reply-To: <1B4FC0D8-60E6-49DA-BC52-688052C4DA51@langille.org> References: <1B4FC0D8-60E6-49DA-BC52-688052C4DA51@langille.org>
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On Aug 19, 2011, at 1:50 PM, Dan Langille wrote: > Searching on that error message, I was led to believe that identifying the bad sector and > running dd to read it would cause the HDD to reallocate that bad block. > > http://smartmontools.sourceforge.net/badblockhowto.html > > However, since ad2 is one half of a gmirror, I don't think this is the best approach. > > Comments? Reading the underlying failing drive with dd will help identify any other questionable sectors. However, your drive temps are too high-- many vendors call out either 50C or 55C as the point where drive reliability becomes significantly degraded. Regards, -- -Chuck
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