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From: Kenny Simpson <theonetruekenny@yahoo.com>
To: linux kernel <linux-kernel@vger.kernel.org>
Subject: RAID controller safety
Date: Thu, 29 Dec 2005 08:29:35 -0800 (PST)	[thread overview]
Message-ID: <20051229162935.67301.qmail@web34106.mail.mud.yahoo.com> (raw)

Hello,
  I am trying to determine which drivers and what hardware can be used to give reliable fsync
behavior.  I see many drivers with FIXME or TODO comments which make me nervous.
  I see the sd driver supports the direct SYNCHRONIZE_CACHE, but I'me having a hard time tracing
through how this translates to raid controllers and their drivers.
  Specificly, I am looking at the Adaptec RAID controllers and their i2o drivers.  I am told the
kernel's i2o driver lacks a strong guarantee on fsync, and so far am unable to determine if the
dpt_i2o driver also falls short in this reguard.

  I don't mean to start a 'drives lie - disable all caching, buy FC drives' flame war.  I know
drives can lie, but I'd like to know if the drivers are lying too.

thanks,
-Kenny



	
		
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             reply	other threads:[~2005-12-29 16:29 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-12-29 16:29 Kenny Simpson [this message]
2005-12-30 15:17 ` Alan Cox
2005-12-30 16:18   ` Kenny Simpson
2005-12-30 18:20     ` Alan Cox
2005-12-30 18:58       ` Kenny Simpson
2005-12-30 19:31         ` Bernd Eckenfels
2005-12-31  0:49         ` Alan Cox
2005-12-31  3:25           ` Kenny Simpson
2005-12-31  3:29           ` Kenny Simpson
2005-12-31  6:55           ` Kenny Simpson
2005-12-31  7:57           ` Kenny Simpson
2006-01-06 14:33 Salyzyn, Mark
2006-01-06 14:46 ` Alan Cox
2006-01-06 15:18   ` Kenny Simpson
2006-01-06 16:02     ` Alan Cox
2006-01-06 17:06 Salyzyn, Mark

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