Home » Mailing list archives » linux-kernel » 2010 » March » 8

Re: ATA 4 KiB sector issues.

Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
[view in full thread]
From: H. Peter Anvin
Subject: Re: ATA 4 KiB sector issues.
Date: Monday, March 8, 2010 - 11:50 am

On 03/08/2010 07:41 AM, Martin K. Petersen wrote:

Well, apparently Western Digital are looking at it for USB drives due to
XP compatibility requirements -- those presumably are ATA internally and
use a USB-ATA bridge.

On the flipside, though, there really is very little net benefit to 4K
as opposed to 512 byte logical sectors: the additional protocol overhead
is relatively minimal, and as long as writes are aligned full blocks,
there shouldn't be any additional overhead on either the OS or the drive
side.  On the plus side, you get full compatibility with the existing
software stack.  The equation really seems rather simple.

	-hpa
--
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
Messages in current thread:
ATA 4 KiB sector issues., Tejun Heo, (Sun Mar 7, 8:48 pm)
Re: ATA 4 KiB sector issues., Greg Freemyer, (Sun Mar 7, 10:38 pm)
Re: ATA 4 KiB sector issues., James Bottomley, (Mon Mar 8, 12:00 am)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Mon Mar 8, 12:53 am)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Mon Mar 8, 12:56 am)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 8:18 am)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 8:33 am)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 8:34 am)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 8:38 am)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 8:41 am)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Mon Mar 8, 11:29 am)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Mon Mar 8, 11:50 am)
Re: ATA 4 KiB sector issues., James Bottomley, (Mon Mar 8, 11:58 am)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Mon Mar 8, 12:11 pm)
Re: ATA 4 KiB sector issues., Mike Snitzer, (Mon Mar 8, 12:34 pm)
Re: ATA 4 KiB sector issues., Karel Zak, (Mon Mar 8, 12:58 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 1:01 pm)
Re: ATA 4 KiB sector issues., =?UTF-8?B?Q2zDoXVkaW ..., (Mon Mar 8, 1:02 pm)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Mon Mar 8, 1:12 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 1:19 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 2:07 pm)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Mon Mar 8, 2:16 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Mon Mar 8, 7:22 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Mon Mar 8, 7:34 pm)
Re: ATA 4 KiB sector issues., Jeff Garzik, (Mon Mar 8, 7:42 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Mon Mar 8, 7:42 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Mon Mar 8, 7:44 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Mon Mar 8, 7:49 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Mon Mar 8, 7:53 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 8:09 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 8:11 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 8:18 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 8:20 pm)
RE: ATA 4 KiB sector issues., Daniel Taylor, (Mon Mar 8, 8:38 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Mon Mar 8, 9:54 pm)
Re: ATA 4 KiB sector issues., Mikael Abrahamsson, (Mon Mar 8, 11:34 pm)
Re: ATA 4 KiB sector issues., Michael Tokarev, (Mon Mar 8, 11:53 pm)
Re: ATA 4 KiB sector issues., Jim Meyering, (Tue Mar 9, 12:27 am)
Re: ATA 4 KiB sector issues., Karel Zak, (Tue Mar 9, 3:01 am)
Re: ATA 4 KiB sector issues., Michal Soltys, (Tue Mar 9, 3:06 am)
Re: ATA 4 KiB sector issues., Michael Tokarev, (Tue Mar 9, 3:16 am)
Re: ATA 4 KiB sector issues., Dave Chinner, (Tue Mar 9, 4:15 am)
Re: ATA 4 KiB sector issues., Michael Tokarev, (Tue Mar 9, 4:38 am)
Re: ATA 4 KiB sector issues., Karel Zak, (Tue Mar 9, 4:50 am)
Re: ATA 4 KiB sector issues., Karel Zak, (Tue Mar 9, 5:18 am)
Re: ATA 4 KiB sector issues., Dave Chinner, (Tue Mar 9, 5:20 am)
Re: ATA 4 KiB sector issues., Mark Lord, (Tue Mar 9, 6:55 am)
Re: ATA 4 KiB sector issues., Mark Lord, (Tue Mar 9, 7:32 am)
RE: ATA 4 KiB sector issues., Daniel Taylor, (Tue Mar 9, 3:36 pm)
Re: ATA 4 KiB sector issues., Greg Freemyer, (Tue Mar 9, 3:46 pm)
Re: ATA 4 KiB sector issues., Arnd Bergmann, (Tue Mar 9, 4:46 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 9, 4:56 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 9, 5:00 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 9, 5:05 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 9, 5:11 pm)
RE: ATA 4 KiB sector issues., Daniel Taylor, (Tue Mar 9, 5:14 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 9, 5:20 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 9, 5:26 pm)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Tue Mar 9, 5:32 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 9, 5:34 pm)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Tue Mar 9, 5:36 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Tue Mar 9, 9:57 pm)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Tue Mar 9, 10:06 pm)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Tue Mar 9, 10:17 pm)
Re: ATA 4 KiB sector issues., Mark Lord, (Tue Mar 9, 11:08 pm)
Re: ATA 4 KiB sector issues., Gabor Gombas, (Wed Mar 10, 12:09 am)
Re: ATA 4 KiB sector issues., Matthew Wilcox, (Wed Mar 10, 12:53 am)
Re: ATA 4 KiB sector issues., Denys Vlasenko, (Wed Mar 10, 2:14 am)
Re: ATA 4 KiB sector issues., Johannes Stezenbach, (Wed Mar 10, 3:46 am)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Wed Mar 10, 4:22 am)
Re: ATA 4 KiB sector issues., Jeff Garzik, (Wed Mar 10, 6:47 am)
Re: ATA 4 KiB sector issues., Damian Lukowski, (Wed Mar 10, 9:19 am)
Re: ATA 4 KiB sector issues., Henrique de Moraes H ..., (Wed Mar 10, 1:50 pm)
Re: ATA 4 KiB sector issues., Theodore Tso, (Thu Mar 11, 6:04 am)
Re: ATA 4 KiB sector issues., Nikanth Karthikesan, (Thu Mar 11, 6:57 am)
Re: ATA 4 KiB sector issues., Theodore Tso, (Thu Mar 11, 7:28 am)
Re: ATA 4 KiB sector issues., James Bottomley, (Thu Mar 11, 7:39 am)
Re: ATA 4 KiB sector issues., Mike Snitzer, (Thu Mar 11, 7:48 am)
Re: ATA 4 KiB sector issues., Nikanth Karthikesan, (Thu Mar 11, 8:00 am)
Re: ATA 4 KiB sector issues., Nikanth Karthikesan, (Thu Mar 11, 8:05 am)
Re: ATA 4 KiB sector issues., Tejun Heo, (Thu Mar 11, 8:10 am)
Re: ATA 4 KiB sector issues., tytso, (Thu Mar 11, 8:25 am)
Re: ATA 4 KiB sector issues., Mike Snitzer, (Thu Mar 11, 9:01 am)
Re: ATA 4 KiB sector issues., Gene Heskett, (Thu Mar 11, 9:26 am)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Thu Mar 11, 9:33 am)
Re: ATA 4 KiB sector issues., Greg Freemyer, (Thu Mar 11, 9:34 am)
Re: ATA 4 KiB sector issues., Christoph Hellwig, (Thu Mar 11, 11:26 am)
Re: ATA 4 KiB sector issues., Tejun Heo, (Thu Mar 11, 6:09 pm)
Re: ATA 4 KiB sector issues., Michal Soltys, (Sun Mar 14, 2:09 pm)
Re: ATA 4 KiB sector issues., s ponnusa, (Sun Mar 14, 3:56 pm)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Sun Mar 14, 6:21 pm)
Re: ATA 4 KiB sector issues., Denys Vlasenko, (Sun Mar 14, 7:26 pm)
Re: ATA 4 KiB sector issues., Greg Freemyer, (Sun Mar 14, 7:56 pm)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Sun Mar 14, 9:00 pm)
Re: ATA 4 KiB sector issues., david, (Sun Mar 14, 10:20 pm)
Re: ATA 4 KiB sector issues., Denys Vlasenko, (Mon Mar 15, 2:56 am)
Re: ATA 4 KiB sector issues., Arnd Bergmann, (Mon Mar 15, 5:30 am)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Mon Mar 15, 7:47 am)
Re: ATA 4 KiB sector issues., Tejun Heo, (Mon Mar 15, 7:30 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Mon Mar 15, 7:32 pm)
Re: ATA 4 KiB sector issues., James Bottomley, (Mon Mar 15, 11:14 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Mon Mar 15, 11:22 pm)
Re: ATA 4 KiB sector issues., Thomas Chou, (Mon Mar 15, 11:27 pm)
Re: ATA 4 KiB sector issues., James Bottomley, (Tue Mar 16, 6:24 am)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 16, 6:56 am)
Re: ATA 4 KiB sector issues., James Bottomley, (Tue Mar 16, 7:21 am)
Re: ATA 4 KiB sector issues., Arnd Bergmann, (Tue Mar 16, 7:25 am)
Re: ATA 4 KiB sector issues., Denys Vlasenko, (Tue Mar 16, 7:38 am)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 16, 7:50 am)
Re: ATA 4 KiB sector issues., James Bottomley, (Tue Mar 16, 8:02 am)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 16, 8:12 am)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 16, 8:20 am)
Re: ATA 4 KiB sector issues., Martin K. Petersen, (Tue Mar 16, 8:22 am)
Re: ATA 4 KiB sector issues., James Bottomley, (Tue Mar 16, 8:23 am)
Re: ATA 4 KiB sector issues., Denys Vlasenko, (Tue Mar 16, 8:25 am)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 16, 8:37 am)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 16, 8:47 am)
Re: ATA 4 KiB sector issues., Ric Wheeler, (Tue Mar 16, 1:42 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 16, 7:04 pm)
Re: ATA 4 KiB sector issues., Tejun Heo, (Tue Mar 16, 7:07 pm)
Re: ATA 4 KiB sector issues., H. Peter Anvin, (Tue Mar 16, 11:48 pm)
Re: ATA 4 KiB sector issues., Bill Davidsen, (Wed Mar 17, 10:04 am)