From owner-freebsd-questions@FreeBSD.ORG Mon Sep 29 13:51:48 2014 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id C28DD757 for ; Mon, 29 Sep 2014 13:51:48 +0000 (UTC) Received: from eu1sys200aog113.obsmtp.com (eu1sys200aog113.obsmtp.com [207.126.144.135]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 2029ED58 for ; Mon, 29 Sep 2014 13:51:47 +0000 (UTC) Received: from mail-wi0-f173.google.com ([209.85.212.173]) (using TLSv1) by eu1sys200aob113.postini.com ([207.126.147.11]) with SMTP ID DSNKVClj1UBY0vkxJeZsn50MQs6W5rcq4wz8@postini.com; Mon, 29 Sep 2014 13:51:48 UTC Received: by mail-wi0-f173.google.com with SMTP id bs8so1979525wib.12 for ; Mon, 29 Sep 2014 06:51:17 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:message-id:to:subject:reply-to :in-reply-to; bh=GuIMQqSSh/PkwjuPQNyvpW/C+DCeoEe2YhnpJDeQhiM=; b=Oqjg1fHoj/27XoB/CJfKa7qBqAV34YWOPxHsQSDZ4gvCchebl9JuBWKlYrgTQygjMp SWq+1A+2zW1pyzN5H1BfwLFmtHIW+q75h+hBc6b4xiTqyYdN13SeI45HICJ14FTKP3qz bwBPDOiXk39yC6AI2p8RDCUT45VTuyTPll8wQvefcYXOvp2XffCb9EysuYzQnAADfPjV jUo4iqVEYiqFPeab5IguNntXqX/CcYtIvhXHIyscj/NRN8Zuya//3wWHOk2kY+FgN+jG YOVKaUec4SlaFaZ1qLTgSEH+x5Qlh9YJDMGtOudBZWE8lLsFYpVIMeh0uZmkzr9Gq0OY /mKg== X-Gm-Message-State: ALoCoQm3hHq9NwonnmD6qgBMQEp8MyTv0jjLBz5r2+Qw7GaUa0KqOfsqpKyCCXtBDT8pzfbj1GpuQFOMQRts1r5RrV1RzJeD9C8rBSAtgTitX5Kg7+YYrMpEbFkKcPO6BfhjGbqHxWbMmapgg1R/Pori/2Y1pD73/DSiElIr4/MpIgMoC+cp1EQ= X-Received: by 10.194.237.9 with SMTP id uy9mr2961257wjc.132.1411998677831; Mon, 29 Sep 2014 06:51:17 -0700 (PDT) X-Received: by 10.194.237.9 with SMTP id uy9mr2961249wjc.132.1411998677744; Mon, 29 Sep 2014 06:51:17 -0700 (PDT) Received: from mech-as221.men.bris.ac.uk (mech-as221.men.bris.ac.uk. [137.222.187.221]) by mx.google.com with ESMTPSA id q2sm11741927wiy.23.2014.09.29.06.51.16 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 29 Sep 2014 06:51:17 -0700 (PDT) Received: from mech-as221.men.bris.ac.uk (localhost [127.0.0.1]) by mech-as221.men.bris.ac.uk (8.14.9/8.14.9) with ESMTP id s8TDpF2a052014 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO); Mon, 29 Sep 2014 14:51:16 +0100 (BST) (envelope-from mexas@mech-as221.men.bris.ac.uk) Received: (from mexas@localhost) by mech-as221.men.bris.ac.uk (8.14.9/8.14.9/Submit) id s8TDpFPY052009; Mon, 29 Sep 2014 14:51:15 +0100 (BST) (envelope-from mexas) Date: Mon, 29 Sep 2014 14:51:15 +0100 (BST) From: Anton Shterenlikht Message-Id: <201409291351.s8TDpFPY052009@mech-as221.men.bris.ac.uk> To: freebsd-questions@freebsd.org, juan@inti.gob.ar Subject: Re: two hosts sharing the same data fia SAN? Reply-To: mexas@bristol.ac.uk In-Reply-To: <54295D32.4020908@inti.gob.ar> X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 29 Sep 2014 13:51:48 -0000 >> On 09/29/14 07:36, Anton Shterenlikht wrote: >>> Hello >>> >>> I've 2 separate freebsd boxes, each connected >>> vi fibre to a disk array. I'd like to have >>> a set of disk units to be read/write accessible >>> to both boxes. Seems this is not allowed with just >>> UFS. If one box mounts the disk units, then the >>> other box cannot mount them, i.e. seems the >>> disks cannot be mounted on both boxes simultaneously. >>> How can this be achived? >>> >>> I've had a quick look at HAST, but it seems the >>> model their is different. >>> >>> Thanks >>> >>> Anton >>> _______________________________________________ >>> freebsd-questions@freebsd.org mailing list >>> http://lists.freebsd.org/mailman/listinfo/freebsd-questions >>> To unsubscribe, send any mail to >>> "freebsd-questions-unsubscribe@freebsd.org" >>> >> >> NFS ? > >You need a clustered file system, like GFS for linux. At the moment I >dont know if there are any working on freebsd. NFS is for sharind disk >at file level, but if you want to share a disk al block level, you need >a clustered fs. > >Saludos, Juan. cluster file system...? How do I get one in FreeBSD. >From looking in the archives, many people ask for one periodically, but it seems it's not there. NFS, HAST and iSCSI all seem do something different from what I need. In my case both nodes (actually I have more than two, but it's perhaps easier to explain with just two) have direct fibre access to the storage, no network required. Also, it makes no sense to delegate one node a server and another a client in my setup. I'd like them to be identical, so that access to the data is equally possible if either node fails. The disk array alreay provides multiple levels of RAID, so I don't need this. So is something like this really does not exist on FreeBSD (yet) ? Thanks Anton