RFC: ATA to CAM integration patch
Alexander Motin
mav at FreeBSD.org
Sat Jun 27 11:02:06 UTC 2009
Roman Divacky wrote:
> On Fri, Jun 26, 2009 at 09:47:26PM +0300, Alexander Motin wrote:
>> I would like to present for testing and feedback present state of my and
>> Scott work on extending CAM subsystem to support ATA in addition to
>> SCSI. At this moment we have:
>
> this is awesome! do you plan to add support for the TRIM command support?
> what would it take to teach FreeBSD to use the TRIM?
I haven't looked on it yet, but I think should be really easy from disk
driver point ov view. After last firmware update, my SSD should now
support TRIM, so I will look on it closer, as time permit.
The main question is to implement BIO_DELETE in filesystems code. I have
seen in lists that UFS patches were made long time ago, but they are
still not committed. Now practically the only BIO_DELETE consumer is
newfs with -E option, which I have successfully used with mmcsd driver.
--
Alexander Motin
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