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Date: Wed, 15 Apr 2015 07:26:50 -0500
From: Bigby James <bigby.james@dimthoughts.com>
To: freebsd-questions@freebsd.org
Subject: Re: ZFS Volumes, UFS, and TRIM
Message-ID: <20150415122650.GA40508@WorkBox.Home>
References: <20150414182805.GA77026@WorkBox.Home>
 <74f939cf.1642c2ae@fabiankeil.de>
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On 04/15, Fabian Keil wrote:
> Bigby James <bigby.james@dimthoughts.com> wrote:
> 
> > Hey folks. I'm having some trouble finding info on a specific ZFS use case: I'm
> > wondering if a ZFS volume on an SSD, formatted to UFS, is covered by native ZFS
> > TRIM support, or if it needs to be enabled on the "embedded" UFS filesystem
> > written to the zvol itself. I see by the man page that by default the OS sees
> > the volume as an ordinary GEOM device, which leads me to infer that TRIM needs
> > to be set using newfs(8) or tunefs(8), but I'm uncertain.
> 
> You came to the right conclusion.
> 
> Fabian

Excellent, thanks for the response. Take care.

-Bigby

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