From: Mark Lord <lkml@rtr.ca>
To: "Rogério Brito" <rbrito@ime.usp.br>
Cc: linux-kernel@vger.kernel.org, Tejun Heo <htejun@gmail.com>
Subject: Re: Quick question about libata and hdparm
Date: Sun, 19 Apr 2009 19:41:40 -0400 [thread overview]
Message-ID: <49EBB6B4.6090507@rtr.ca> (raw)
In-Reply-To: <20090419200303.GA2891@ime.usp.br>
Rogério Brito wrote:
> On Apr 19 2009, Mark Lord wrote:
..
>> The -m flag could be done, and I even have code in hdparm to do it,
>> but libata is very buggy with multi-sector I/O, so -m is currently is
>> disallowed.
>
> I would be interested in putting in a new drive in the NAS and testing
> your patch to debug things, if that would help with multi-sector I/O
> getting fixed with libata.
..
It just needs someone to patch libata to sniff out "SET MULTIPLE" commands
from SG_IO, and perform drive revalidation afterwards. Very similar to
how it currently sniffs "SET FEATURES XFERMODE" commands.
If libata did that, then "hdparm -m" would become safe to use with it.
Cheers
prev parent reply other threads:[~2009-04-19 23:41 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-04-19 0:22 Quick question about libata and hdparm Rogério Brito
2009-04-19 6:31 ` Robert Hancock
2009-04-19 12:33 ` Mark Lord
2009-04-19 12:44 ` Michael Tokarev
2009-04-19 12:57 ` Jeff Garzik
2009-04-19 13:06 ` Michael Tokarev
2009-04-19 20:11 ` Rogério Brito
2009-04-19 21:27 ` Jeff Garzik
2009-04-20 17:35 ` Rogério Brito
2009-04-20 18:40 ` Alan Cox
2009-04-20 20:41 ` Rogério Brito
2009-04-20 21:16 ` Alan Cox
2009-04-20 20:31 ` Bartlomiej Zolnierkiewicz
2009-04-20 20:45 ` Rogério Brito
2009-04-20 21:19 ` Alan Cox
2009-04-20 22:57 ` Rogério Brito
2009-04-21 5:32 ` Rogério Brito
2009-04-21 12:59 ` Bartlomiej Zolnierkiewicz
2009-04-23 5:56 ` Rogério Brito
2009-04-23 21:31 ` Bartlomiej Zolnierkiewicz
2009-04-24 3:00 ` Rogério Brito
2009-05-01 9:18 ` Rogério Brito
2009-05-01 10:31 ` Alan Cox
2009-05-01 11:50 ` Rogério Brito
2009-05-01 13:16 ` Alan Cox
2009-05-01 14:19 ` Rogério Brito
2009-05-01 11:20 ` Bartlomiej Zolnierkiewicz
2009-05-11 18:34 ` Jeff Garzik
2009-04-19 20:03 ` Rogério Brito
2009-04-19 23:41 ` Mark Lord [this message]
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