From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roberto Spadim Subject: Re: SSD - TRIM command Date: Tue, 22 Feb 2011 14:15:52 -0300 Message-ID: References: <4D62CF5F.6080007@cfl.rr.com> <20110222003610.GB29101@bounceswoosh.org> <4D63218F.2000309@cfl.rr.com> <4D6335D6.7000609@cfl.rr.com> <4D63CBEC.6060403@cfl.rr.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <4D63CBEC.6060403@cfl.rr.com> Sender: linux-raid-owner@vger.kernel.org To: Phillip Susi Cc: =?ISO-8859-1?Q?Mathias_Bur=E9n?= , "Eric D. Mudama" , David Brown , linux-raid@vger.kernel.org List-Id: linux-raid.ids i think it have. ssd have, why not hd? hd can implement a inteligent layer to speedup writes/reads without telling to fs 2011/2/22 Phillip Susi : > On 2/21/2011 11:30 PM, Roberto Spadim wrote: >> it can't because today filesystem (exclude ext4 and swap) don't use >> trim command to tell device what block isn't in use > > You aren't getting it. =A0The fs can tell the drive all it wants: the > drive does not care. =A0It has nothing useful it can do with that inf= ormation. > -- > To unsubscribe from this list: send the line "unsubscribe linux-raid"= in > the body of a message to majordomo@vger.kernel.org > More majordomo info at =A0http://vger.kernel.org/majordomo-info.html > --=20 Roberto Spadim Spadim Technology / SPAEmpresarial -- To unsubscribe from this list: send the line "unsubscribe linux-raid" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html