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Date: Fri, 18 Jan 2013 14:23:03 +0000
Message-ID: <CAFHbX1+8RnVZ0SF-6jMKc5gZMoyK6LB0VBzKeT5TuQEA0LREVA@mail.gmail.com>
Subject: Re: Enable UNMAP in ZFS
From: Tom Evans <tevans.uk@googlemail.com>
To: Dani <dppascual@gmail.com>
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On Fri, Jan 18, 2013 at 1:07 PM, Dani <dppascual@gmail.com> wrote:
> Hi all,
>
> I have installed FreeBSD 9.1 and have created a ZFS pool with SAS disks.
> How can I enable UNMAP on SSDs devices used as cache and log devices?
>
> Thanks you. Regards.

UNMAP, I don't know. FreeBSD ZFS has support for TRIM in 10-CURRENT.

Oracle support UNMAP in Solaris 11.1, but judging from this, it's not
that useful:

http://docs.oracle.com/cd/E26502_01/html/E28978/gmibl.html

Cheers

Tom