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Date:      Fri, 3 May 2024 08:33:57 -0600
From:      Warner Losh <imp@bsdimp.com>
To:        Antony Uspensky <uspensky@x-art.ru>
Cc:        mike tancsa <mike@sentex.net>, Matthew Grooms <mgrooms@shrew.net>, stable@freebsd.org
Subject:   Re: how to tell if TRIM is working
Message-ID:  <CANCZdfoshnihAxQKW5gFF6b_B_vucZycFAM4NGp2YbYW4r%2BD5A@mail.gmail.com>
In-Reply-To: <alpine.BSF.2.00.2405031711340.23742@gw-old.x-art.ru>
References:  <alpine.BSF.2.00.2405031711340.23742@gw-old.x-art.ru>

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On Fri, May 3, 2024 at 8:17=E2=80=AFAM Antony Uspensky <uspensky@x-art.ru> =
wrote:

> On Thu, 2 May 2024, Warner Losh wrote:
>
> > ZFS has a lot of knobs to control when / how / if this is done.
>
> trim(8) works on device level.
> If you use ZFS, you rather need zpool-trim(8), which works on pool level.
>

Ah yes. You need to enable ZFS trim. I'd misread trim as zfs trim. The
other trim destroys all the data
on that partition.

Warner

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<div dir=3D"ltr"><div dir=3D"ltr"><br></div><br><div class=3D"gmail_quote">=
<div dir=3D"ltr" class=3D"gmail_attr">On Fri, May 3, 2024 at 8:17=E2=80=AFA=
M Antony Uspensky &lt;<a href=3D"mailto:uspensky@x-art.ru">uspensky@x-art.r=
u</a>&gt; wrote:<br></div><blockquote class=3D"gmail_quote" style=3D"margin=
:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"=
>On Thu, 2 May 2024, Warner Losh wrote:<br>
<br>
&gt; ZFS has a lot of knobs to control when / how / if this is done.<br>
<br>
trim(8) works on device level.<br>
If you use ZFS, you rather need zpool-trim(8), which works on pool level.<b=
r></blockquote><div><br></div><div>Ah yes. You need to enable ZFS trim. I&#=
39;d misread trim as zfs trim. The other trim destroys all the data</div><d=
iv>on that partition.<br></div><div><br></div><div>Warner <br></div></div><=
/div>

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