Subject: Re: Data corruption issues possibly involving cgd(4)
To: Nino Dehne <>
From: Daniel Carosone <>
List: current-users
Date: 01/17/2007 07:23:19
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On Tue, Jan 16, 2007 at 08:36:15AM +0100, Nino Dehne wrote:
> On Tue, Jan 16, 2007 at 08:28:35AM +0100, Bernd Ernesti wrote:
> > Can you check the s.m.a.r.t. status of your drives?
> >=20
> >  atactl wdX smart status
> They all check fine. Besides, what would happen if raid(4) got fed a
> corrupted block? I'm under the impression I would see more serious errors
> far earlier than observing silent data corruption several layers above, n=

Actually, no. raid(4) doesn't check parity unless it gets an error;
you want zfs for that..

And if it does turn out to be power, the corruption induced could be
happening a number of places, including some (like main memory) which
SMART won't see.

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