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Re: Intel X25-E running Linux using XFS

To: Pavel Machek <pavel@xxxxxxx>
Subject: Re: Intel X25-E running Linux using XFS
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Mon, 22 Dec 2008 03:50:47 -0500
Cc: Justin Piszcz <jpiszcz@xxxxxxxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, xfs@xxxxxxxxxxx, Alan Piszcz <ap@xxxxxxxxxxxxx>
In-reply-to: <20081212185803.GE11974@xxxxxxxxxx>
References: <alpine.DEB.1.10.0811271257470.2233@xxxxxxxxxxxxxxxx> <20081212185803.GE11974@xxxxxxxxxx>
User-agent: Mutt/1.5.18 (2008-05-17)
On Fri, Dec 12, 2008 at 07:58:03PM +0100, Pavel Machek wrote:
> Actually I'd like to know... how does it behave during powerfails
> while it is being written to?

I've done various powerfail tests with and X25-M and as expect it
behaves perfectly fine as long as you either disable the write cache
or use barriers.  The default ext3 setup without barriers corrupts
the filesystem left, right and center, but that's the same as other
recent disk drives with large caches.

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