linux-kernel - Re: Slow disks.

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Message-ID: <alpine.DEB.1.10.1012251317420.27193@uplift.swm.pp.se>
Date:	Sat, 25 Dec 2010 13:19:05 +0100 (CET)
From:	Mikael Abrahamsson <swmike@....pp.se>
To:	Rogier Wolff <R.E.Wolff@...Wizard.nl>
cc:	Michael Tokarev <mjt@....msk.ru>, Krzysztof Halasa <khc@...waw.pl>,
	Greg Freemyer <greg.freemyer@...il.com>,
	Bruno Prémont <bonbons@...ux-vserver.org>,
	linux-kernel@...r.kernel.org, linux-ide@...r.kernel.org
Subject: Re: Slow disks.

On Sat, 25 Dec 2010, Rogier Wolff wrote:

> If you'd use a RAID drive that DOES report error quickly, you'll be on
> your way maybe 113 seconds quicker, but still with a degraded array.

Read errors will use parity drive and be re-written by the md layer.

Write errors will cause the drive to be kicked.

-- 
Mikael Abrahamsson    email: swmike@....pp.se
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