svn commit: r201139 - in head/sys: cam/ata geom sys
bms at incunabulum.net
Mon Dec 28 21:03:15 UTC 2009
On 28/12/2009 20:08, Alexander Motin wrote:
> Author: mav
> Date: Mon Dec 28 20:08:01 2009
> New Revision: 201139
> URL: http://svn.freebsd.org/changeset/base/201139
> Add BIO_DELETE support to ada(4):
> - For SSDs use TRIM feature of DATA SET MANAGEMENT command, as defined by
> ACS-2 specification working draft.
> - For CompactFlash use CFA ERASE command, same as ad(4) does.
A thought popped into my head as I read this.
Is anyone implementing these ATA commands, intended for CF and SSD
devices, in e.g. VirtualBox, QEMU?
They could probably help out with block allocation for copy-on-write
disk images there.
Just a thought.
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