From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roy Sigurd Karlsbakk Subject: Re: Raid 5/10 discard support broken in 3.8.2 Date: Thu, 7 Mar 2013 11:02:39 +0100 (CET) Message-ID: <18656028.2.1362650559146.JavaMail.root@zimbra> References: Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: Sender: linux-raid-owner@vger.kernel.org To: Dave Cundiff Cc: Linux MDADM Raid List-Id: linux-raid.ids > It appears the Raid 5/10 discard support does not work in the mainlin= e > kernel. >=20 > I've been trying to backport it to a RHEL 6 kernel without success. I > finally managed to setup a mainline dev box and discovered it doesn't > work on it either! >=20 > I'm now testing on a stock 3.8.2 kernel. The drives I'm using are > Samsung 840 Pro's hanging off an LSI 9211-8i. No backplane and each > drive has a dedicated channel. No RAID on the LSI, its just an HBA. I'm not sure if TRIM/UNMAP is supported on that controller, even in HBA= mode (and with IT firmware). I've also seen scterc fail to work on tha= t controller as well, while working with an ordinary "stupid" controlle= r on the same disk. Vennlige hilsener / Best regards roy -- Roy Sigurd Karlsbakk (+47) 98013356 roy@karlsbakk.net http://blogg.karlsbakk.net/ GPG Public key: http://karlsbakk.net/roysigurdkarlsbakk.pubkey.txt -- I all pedagogikk er det essensielt at pensum presenteres intelligibelt.= Det er et element=C3=A6rt imperativ for alle pedagoger =C3=A5 unng=C3=A5= eksessiv anvendelse av idiomer med xenotyp etymologi. I de fleste tilf= eller eksisterer adekvate og relevante synonymer p=C3=A5 norsk. -- 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