Date: Sun, 29 Jun 2008 15:24:36 +0100 From: "Steven Hartland" <killing@multiplay.co.uk> To: "Benjamin Close" <Benjamin.Close@clearchain.com>, "Rainer Duffner" <rainer@ultra-secure.de> Cc: Garrett Cooper <yanefbsd@gmail.com>, current@freebsd.org, sos@freebsd.org Subject: Re: URGENT: Need help rebuilding iir RAID5 array with failed drive Message-ID: <FAEE486EB48B440A866156003FBA41C9@multiplay.co.uk> References: <7d6fde3d0806260649t6619521bv92b65c472ddb7e1@mail.gmail.com> <6.0.0.22.2.20080627170323.02591528@mail.computinginnovations.com> <7d6fde3d0806272057p795277a2ie60ac7d7d10f0a6e@mail.gmail.com> <7d6fde3d0806280129i31874960ofbc7627598e1426f@mail.gmail.com> <735A937C-89A9-411A-AA3F-377F576E635E@freebsd.org> <7d6fde3d0806280348r65875755pf7dc3917bba2bcb5@mail.gmail.com> <7d6fde3d0806280349j7eace513idb5cd81f9e2e4e0a@mail.gmail.com> <6.0.0.22.2.20080628132240.0255ba38@mail.computinginnovations.com> <7d6fde3d0806281410r781a6a77k98ffe237c10e3eee@mail.gmail.com> <D0A03968-B9F2-4EF8-B754-D0EFA90A9C1E@FreeBSD.ORG> <7d6fde3d0806282011x472f8d27s955a8e1ab43a7341@mail.gmail.com><F8F21D91-0BF9-4525-A397-D2632821C7E5@ultra-secure.de> <48679898.3000905@clearchain.com>
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----- Original Message -----
From: "Benjamin Close" <Benjamin.Close@clearchain.com>
> Perhaps a lesson as developers we should take from this, is to put a
> warning in ata about raid5. It's fooled Garret into believing he had a
> raid5, how many others are also using ata believing their raid5 is a
> raid5. We should warn people in the future rather than just saying 'its
> in the docs'. A kernel warning at attach is much more visible.
Although it is more visible, personally I would prefer it to just fail
instead of proceeding. RAID5 is not RAID5 without parity so why even
allow it to continue and hence risk such an unrecoverable situation?
Regards
Steve
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