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From: "Daniel Phillips" <phillips@google.com>
To: "Bryan Henderson" <hbryan@us.ibm.com>
Cc: "Al Boldi" <a1426z@gawab.com>,
	"Alan Cox" <alan@lxorguk.ukuu.org.uk>,
	"David Chinner" <dgc@sgi.com>,
	linux-kernel@vger.kernel.org, "Pavel Machek" <pavel@ucw.cz>,
	"Rik van Riel" <riel@redhat.com>, "Theodore Tso" <tytso@mit.edu>,
	"Valerie Henson" <val.henson@gmail.com>
Subject: Re: [Patch] document ext3 requirements (was Re: [RFD] Incremental fsck)
Date: Wed, 16 Jan 2008 21:02:50 -0500	[thread overview]
Message-ID: <4d47a5d10801161802x2c24ef59pf8422c8d14d487aa@mail.gmail.com> (raw)
In-Reply-To: <OFDB679999.9793D1C7-ON882573D2.00646D05-882573D2.0068FF85@us.ibm.com>

On Jan 16, 2008 2:06 PM, Bryan Henderson <hbryan@us.ibm.com> wrote:
> >The "disk motor as a generator" tale may not be purely folklore.  When
> >an IDE drive is not in writeback mode, something special needs to done
> >to ensure the last write to media is not a scribble.
>
> No it doesn't.  The last write _is_ a scribble.

Have you observed that in the wild?  A former engineer of a disk drive
company suggests to me that the capacitors on the board provide enough
power to complete the last sector, even to park the head.

Regards,

Daniel

  parent reply	other threads:[~2008-01-17  2:03 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-01-08 21:22 [RFD] Incremental fsck Al Boldi
2008-01-08 21:31 ` Alan
2008-01-09  9:16   ` Andreas Dilger
2008-01-12 23:55     ` Daniel Phillips
2008-01-08 21:41 ` Rik van Riel
2008-01-09  4:40   ` Al Boldi
2008-01-09  7:45     ` Valerie Henson
2008-01-09 11:52       ` Al Boldi
2008-01-09 14:44         ` Rik van Riel
2008-01-10 13:26           ` Al Boldi
2008-01-12 14:51         ` Theodore Tso
2008-01-13 11:05           ` Al Boldi
2008-01-13 17:19           ` Pavel Machek
2008-01-13 17:41             ` Alan Cox
2008-01-15 20:16               ` [Patch] document ext3 requirements (was Re: [RFD] Incremental fsck) Pavel Machek
2008-01-15 21:43                 ` David Chinner
2008-01-15 23:07                   ` Pavel Machek
2008-01-15 23:44                     ` Daniel Phillips
2008-01-16  0:15                       ` Alan Cox
2008-01-16  1:24                         ` Daniel Phillips
2008-01-16  1:36                           ` Chris Mason
2008-01-17 20:54                             ` Pavel Machek
2008-01-16 19:06                           ` Bryan Henderson
2008-01-16 20:05                             ` Alan Cox
2008-01-17  2:02                             ` Daniel Phillips [this message]
2008-01-17 21:37                               ` Bryan Henderson
2008-01-17 22:45                               ` Theodore Tso
2008-01-17 22:58                                 ` Alan Cox
2008-01-17 23:18                                 ` Ric Wheeler
2008-01-18  0:31                                   ` Bryan Henderson
2008-01-18 14:23                                     ` Theodore Tso
2008-01-18 15:16                                       ` [Patch] document ext3 requirements (was Re: [RFD] Incrementalfsck) linux-os (Dick Johnson)
2008-01-19 14:53                                         ` Pavel Machek
2008-01-18 15:26                                       ` [Patch] document ext3 requirements (was Re: [RFD] Incremental fsck) Ric Wheeler
2008-01-18 20:34                                         ` Jeff Garzik
2008-01-18 22:35                                           ` Bryan Henderson
2008-01-18 15:08                                     ` H. Peter Anvin
2008-01-18 17:43                                       ` Bryan Henderson
2008-01-16 21:28                         ` Eric Sandeen
2008-01-16 11:51                       ` Pavel Machek
2008-01-16 12:20                         ` Valdis.Kletnieks
2008-01-19 14:51                           ` Pavel Machek
2008-01-16 16:38                   ` Christoph Hellwig
2008-01-16  1:44                 ` Daniel Phillips
2008-01-16  3:05                   ` Rik van Riel
2008-01-17  7:38                     ` Andreas Dilger
2008-01-16 11:49                   ` Pavel Machek
2008-01-16 20:52                     ` Valerie Henson
2008-01-17 12:29                   ` Szabolcs Szakacsits
2008-01-17 22:51                     ` Daniel Phillips
2008-01-15  1:04             ` [RFD] Incremental fsck Ric Wheeler
2008-01-14  0:22           ` Daniel Phillips
2008-01-09  8:04     ` Valdis.Kletnieks

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