From owner-freebsd-current@FreeBSD.ORG Fri Mar 25 18:34:21 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C427C106564A for ; Fri, 25 Mar 2011 18:34:21 +0000 (UTC) (envelope-from ambrisko@ambrisko.com) Received: from mail.ambrisko.com (mail.ambrisko.com [64.174.51.43]) by mx1.freebsd.org (Postfix) with ESMTP id 8779C8FC14 for ; Fri, 25 Mar 2011 18:34:21 +0000 (UTC) X-Ambrisko-Me: Yes Received: from server2.ambrisko.com (HELO internal.ambrisko.com) ([192.168.1.2]) by ironport.ambrisko.com with ESMTP; 25 Mar 2011 11:05:02 -0700 Received: from ambrisko.com (localhost [127.0.0.1]) by internal.ambrisko.com (8.14.4/8.14.4) with ESMTP id p2PI4on2030332; Fri, 25 Mar 2011 11:04:50 -0700 (PDT) (envelope-from ambrisko@ambrisko.com) Received: (from ambrisko@localhost) by ambrisko.com (8.14.4/8.14.4/Submit) id p2PI4oIF030331; Fri, 25 Mar 2011 11:04:50 -0700 (PDT) (envelope-from ambrisko) From: Doug Ambrisko Message-Id: <201103251804.p2PI4oIF030331@ambrisko.com> In-Reply-To: <4D8C6B50.7080508@FreeBSD.org> To: Alex Dupre Date: Fri, 25 Mar 2011 11:04:49 -0700 (PDT) X-Mailer: ELM [version 2.4ME+ PL124d (25)] MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="US-ASCII" Cc: Alexander Motin , FreeBSD-Current Subject: Re: graid hit the tree X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 25 Mar 2011 18:34:21 -0000 Alex Dupre writes: | Alexander Motin ha scritto: | > You can choose. Their functionality is comparable, but with graid: | ... | | Yes, as I supposed, so the answer is 'yes'. Obviously it needs a lot of | testing. Thanks for your work. Yes, it can use more testing which is why we (Cisco) wanted it in the tree. However, our experience has been very positive in performance and reliability. It has passed some of our harder failure tests of which others fail (race conditions of changing data while a rebuild is happening etc.). Now I don't have to maintain our hacked together ata and ata-raid changes :-) We are very happy to see this get into mainstream FreeBSD so others can help find and fix problems. It's very nice that it can work on any type of drives and not be tied to ata disks. This means it can/could work with scsi controllers with sw raid bios extensions etc. We have been testing it with ahci and and cam attached ata disks. If the hw supports it, it can update status leds. ata/ata-raid has served us well but graid will take us into the future! It was designed from the start as something that could be extended and deal with various failure modes. A big thanks to Alexander, Warner, iXsystems and Cisco for making this happen. It was Scott's vision a few years ago and now it is a reality. Doug A.