Hole-punching, TRIM, etc
Warner Losh
imp at bsdimp.com
Tue Nov 13 22:58:57 UTC 2018
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
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