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Subject: Re: svn commit: r341232 - in head/usr.bin: . trim
From: John Nielsen <lists@jnielsen.net>
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To: Eugene Grosbein <eugen@FreeBSD.org>
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> On Nov 29, 2018, at 7:21 AM, Eugene Grosbein <eugen@FreeBSD.org> wrote:
>=20
> Author: eugen
> Date: Thu Nov 29 14:21:26 2018
> New Revision: 341232
> URL: https://svnweb.freebsd.org/changeset/base/341232
>=20
> Log:
>  Add new small tool trim(1) to delete contents for blocks on flash
>  based storage devices that use wear-leveling algorithms.
>=20
>   [snip]

> +.Sh DESCRIPTION
> +The
> +.Nm
> +utility erases specified region of the device.
> +It is only relevant for flash based storage devices that use wear-levelin=
g
> +algorithms.

I=E2=80=99m curious, would this also be useful for virtual disks or SAN/NAS d=
evices backed by thinly-provisioned storage?