Date: Sat, 27 Jun 2009 14:01:56 +0300 From: Alexander Motin <mav@FreeBSD.org> To: Roman Divacky <rdivacky@FreeBSD.org> Cc: FreeBSD-Current <freebsd-current@FreeBSD.org>, scottl@FreeBSD.org Subject: Re: RFC: ATA to CAM integration patch Message-ID: <4A45FC24.20408@FreeBSD.org> In-Reply-To: <20090627101151.GA40915@freebsd.org> References: <4A4517BE.9040504@FreeBSD.org> <20090627101151.GA40915@freebsd.org>
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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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