Date: Fri, 18 Jan 2013 15:57:37 +0100 From: "Ronald Klop" <ronald-freebsd8@klop.yi.org> To: freebsd-fs@freebsd.org Subject: Re: Enable UNMAP in ZFS Message-ID: <op.wq33ubwm8527sy@ronaldradial.versatec.local> In-Reply-To: <CAFHbX1%2B8RnVZ0SF-6jMKc5gZMoyK6LB0VBzKeT5TuQEA0LREVA@mail.gmail.com> References: <CAAOK-NAnzq=iUnygw=LmxT3rUHzSM7h%2BWO2WuOUkZVB7K1jDvw@mail.gmail.com> <CAFHbX1%2B8RnVZ0SF-6jMKc5gZMoyK6LB0VBzKeT5TuQEA0LREVA@mail.gmail.com>
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On Fri, 18 Jan 2013 15:23:03 +0100, Tom Evans <tevans.uk@googlemail.com> wrote: > 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 Isn't UNMAP the SCSI name for TRIM? Ronald.
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