On 11/04/2010 10:46 AM, Jeff Layton wrote:
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.
Note the distinction between "drive" and "driver"... I agree with what
Matthew says.
Jeff
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