Date: Mon, 14 Dec 2015 14:01:58 -0700 From: Ian Lepore <ian@freebsd.org> To: Maxim Sobolev <sobomax@FreeBSD.org>, freebsd-hackers@freebsd.org Subject: Re: Initiate TRIM/DELETE to a range of blocks from userland? Message-ID: <1450126918.25138.17.camel@freebsd.org> In-Reply-To: <CAH7qZfvTQ4a409SVO2Aqv9qP4SUfxrCL4pduk7AqY4%2BeAeTd%2BA@mail.gmail.com> References: <CAH7qZfvTQ4a409SVO2Aqv9qP4SUfxrCL4pduk7AqY4%2BeAeTd%2BA@mail.gmail.com>
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On Mon, 2015-12-14 at 12:52 -0800, Maxim Sobolev wrote: > Hi guys, let's say I have a raw device (e.g. "ada1") and I want to > generate BIO_DELETE to a range of offsets on that device. Is there > any > way to do it now, and if not, what do you think would be the most > proper way to get something like this implemented? New ioctl and some > new flag for the dd(1)? Looks like there's already an ioctl, DIOCGDELETE in sys/disk.h, used by newfs -E via the berase() routine in libufs. -- Ian
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