From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from plane.gmane.org ([80.91.229.3]:56494 "EHLO plane.gmane.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756967Ab3EVWbj (ORCPT ); Wed, 22 May 2013 18:31:39 -0400 Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1UfHZJ-000459-Ra for linux-btrfs@vger.kernel.org; Thu, 23 May 2013 00:31:37 +0200 Received: from cpc21-stap10-2-0-cust974.12-2.cable.virginmedia.com ([86.0.163.207]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 23 May 2013 00:31:37 +0200 Received: from m_btrfs by cpc21-stap10-2-0-cust974.12-2.cable.virginmedia.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 23 May 2013 00:31:37 +0200 To: linux-btrfs@vger.kernel.org From: Martin Subject: Re: btrfs pseudo-drbd Date: Wed, 22 May 2013 23:31:27 +0100 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 In-Reply-To: Sender: linux-btrfs-owner@vger.kernel.org List-ID: On 19/05/13 18:32, Martin wrote: > Dear Devs, > > Would there be any problem to use nbd (/dev/ndX) devices to gain > btrfs-raid across multiple physical hosts across a network? (For a sort > of btrfs-drbd! :-) ) > > > Regards, > Martin > > > http://en.wikipedia.org/wiki/Network_block_device > > http://www.drbd.org/ As a follow-up, both nbd and AoE look to be active. nbd uses tcp/ip (layer 3) and is network routable; AoE operates on layer 2 (no IP addressing) and so looks to enjoy a lower overhead for the performance. Ideal for putting together your own low cost SAN! Network Block Device (TCP version) http://nbd.sourceforge.net/ ATA Over Ethernet: As an Alternative http://www.rfxn.com/ata-over-ethernet-as-an-alternative/ EtherDriveŽ storage and Linux 2.6 http://support.coraid.com/support/linux/EtherDrive-2.6-HOWTO.html Hope of interest, Regards, Martin