Re: Hole-punching, TRIM, etc

From: Warner Losh <imp_at_bsdimp.com>
Date: Tue, 13 Nov 2018 15:58:45 -0700
On Tue, Nov 13, 2018 at 3:52 PM Conrad Meyer <cem_at_freebsd.org> wrote:

> Geom devices have the DIOCGDELETE ioctl, which translates into
> BIO_DELETE (which is TRIM, as I understand it).
>

Correct. TRIM is both the catch-all term people use, as well as the name of
a specific DSM (data set management) command in the ATA command set. All
FLASH technologies have it (thought what it means under the covers varies a
bit). Thin provisioned resources like in VMs also have it.

Warner
Received on Tue Nov 13 2018 - 21:58:58 UTC

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