From: Jeff Layton <laytonjb@att.net>
To: Matthew Wilcox <matthew@wil.cx>
Cc: linux-fsdevel@vger.kernel.org
Subject: Re: TRIM support in drivers and dm/md?
Date: Thu, 04 Nov 2010 10:46:45 -0400 [thread overview]
Message-ID: <4CD2C755.3000908@att.net> (raw)
In-Reply-To: <20101104134014.GB21931@parisc-linux.org>
On 11/04/2010 09:40 AM, Matthew Wilcox wrote:
> On Thu, Nov 04, 2010 at 09:19:43AM -0400, Jeff Layton wrote:
>> Do many of the SATA controllers support TRIM? (i.e. pass
>> the TRIM command to the SSD). Does anyone know
>> anything about dm/md supporting TRIM? (I'm thinking LVM
>> and software RAID tools).
> As far as I know, there's nothing to be done in any SATA controller
> driver to support TRIM. It's just up to the drive whether it understands
> the command.
That's the rub. I've heard that many drivers don't understand
the command. So I'm curious what drivers do and any experience
anyone might have.
Thanks!
next prev parent reply other threads:[~2010-11-04 14:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-04 13:19 TRIM support in drivers and dm/md? Jeff Layton
2010-11-04 13:40 ` Matthew Wilcox
2010-11-04 14:46 ` Jeff Layton [this message]
2010-11-04 16:45 ` Jeff Garzik
2010-11-04 17:56 ` Jeff Layton
2010-11-04 20:23 ` Jeff Garzik
2010-11-05 2:44 ` Mark Lord
2010-11-05 2:56 ` Jeff Garzik
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