From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roberto Spadim Subject: Re: support for external persistent cache Date: Wed, 19 Jan 2011 01:17:31 -0200 Message-ID: References: <4D365551.7090207@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Cory Coager Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids reading again... should you use a good ups system with information about % of batery, like a notebook? read/write cache can be change with async or sync options on filesystem= mount batery support is done with ups system maybe with some time of use (10 years) the baterry of you ramdisk should be replaced, will you replace it? is easier replace a ups batery or a ramdisk specific batery? check at internet about 12vdc atx power supply, and use a charger and a car batery to supply power to your computer, it's a very nice solution =3D) 2011/1/19 Roberto Spadim : > i think that is a fileystem cache > not a md raid cache > i'm right? > > 2011/1/19 Cory Coager : >> I was wondering if it would be possible to add support for specifyin= g a >> device to use for read/write persistent cache. =A0The reason why I'm= asking is >> because I see physical ram disks with battery backups available rece= ntly. >> =A0These ram disks are relatively cheap and could add great performa= nce for >> write through without the fear of data loss. >> >> Any interest in adding support for this? >> -- >> 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 >> > > > > -- > Roberto Spadim > Spadim Technology / SPAEmpresarial > --=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