Date: Fri, 6 Jan 2012 12:22:25 -0500 From: Janos Dohanics <web@3dresearch.com> To: Chuck Swiger <cswiger@mac.com> Cc: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Re: Apparently conflicting smartctl output Message-ID: <20120106122225.69ee46d2.web@3dresearch.com> In-Reply-To: <6ABAC46B-6193-47B6-B173-94D060E01EC4@mac.com> References: <20120105144204.d419cca4.web@3dresearch.com> <6ABAC46B-6193-47B6-B173-94D060E01EC4@mac.com>
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On Thu, 05 Jan 2012 11:56:44 -0800 Chuck Swiger <cswiger@mac.com> wrote: > On Jan 5, 2012, at 11:42 AM, Janos Dohanics wrote: > > - Do I have a bad hard drive (apparently, I do...) > > > > - Why are there "No Errors Logged" by smartctl? > > You've probably got a bad sector on the drive, anyway. > > The SMART error log is a funny thing governed by various drive's > firmware which have quirks. Some of 'em only have a self-test log, > but don't store the error log at all; others will only record an > error after they've given up trying to remap a failing sector. You > snipped too much of the smartctl output to see what the "Error > logging capability" section says-- the full output would be more > informative. > > You almost certainly want to do a full read-scan of the drive via "dd > if=/dev/ad4 of=/dev/null bs=64k", which will help the drive notice > any other failing sectors. Repeat dd if it aborts early with an > error (or add "conv=noerror", maybe). > > Regards, > -- > -Chuck Chuck, Thank you - dd says: dd: /dev/ad4: Input/output error 10025840+0 records in 10025840+0 records out 657053450240 bytes transferred in 5230.204427 secs (125626724 bytes/sec) I have to replace this drive. -- Janos Dohanics
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