linux-kernel - Re: Ext4 and the "30 second window of death"

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Message-ID: <20090402183834.GB4773@srcf.ucam.org>
Date:	Thu, 2 Apr 2009 19:38:34 +0100
From:	Matthew Garrett <mjg59@...f.ucam.org>
To:	Nick Piggin <nickpiggin@...oo.com.au>
Cc:	david@...g.hm, Theodore Tso <tytso@....edu>,
	Sitsofe Wheeler <sitsofe@...oo.com>,
	"Andreas T.Auer" <andreas.t.auer_lkml_73537@...us.ath.cx>,
	Alberto Gonzalez <info@...bu.es>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: Ext4 and the "30 second window of death"

On Fri, Apr 03, 2009 at 05:34:59AM +1100, Nick Piggin wrote:

> Shouldn't applications have a mode to avoid spinning up the disk if it is
> so important?

They do. It's called "Don't use fsync() unless your data needs to be on 
disk". I'm not sure why you'd ever want an application to be in anything 
but this mode.

-- 
Matthew Garrett | mjg59@...f.ucam.org
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