Enable UNMAP in ZFS

[Ronald Klop]

On Fri, 18 Jan 2013 15:23:03 +0100, Tom Evans <tevans.uk at googlemail.com>  
wrote:

> On Fri, Jan 18, 2013 at 1:07 PM, Dani <dppascual at 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

Isn't UNMAP the SCSI name for TRIM?

Ronald.