Re: [Aoetools-discuss] AoE blog article

2012-04-26 Thread Tracy Reed
On Wed, Apr 25, 2012 at 01:47:23PM +0200, Lars Täuber spake thusly: Tracy Reed tr...@ultraviolet.org schrieb: Reasons why I am currently migrating away from AoE to iSCSI (*sigh*): 1. Disk alignment between Xen VMs and the target. What do you mean by that? I mean that when I configure a

Re: [Aoetools-discuss] AoE blog article

2012-04-26 Thread Lars Erik Dangvard Jensen
Den 26/04/2012 kl. 13.02 skrev Tracy Reed: 1. Disk alignment between Xen VMs and the target. What do you mean by that? I mean that when I configure a Xen VM to use an AoE block device I always had mis-aligned writes. The Xen dom0 has the block device in /dev/etherd and I put the block

Re: [Aoetools-discuss] AoE blog article

2012-04-26 Thread Torbjørn Thorsen
Very interesting answer, thank you. Partition alignment, and IO performance in general, is something I'm trying to get better grips on. FWIW, we're on AoE 47 (stock Debian kernel), with AoE clients using two AoE devices as a backing device for a RAID1 device. It works well enough, but performance

Re: [Aoetools-discuss] AoE blog article

2012-04-25 Thread Lars Täuber
Hi Tracy, Am Tue, 24 Apr 2012 14:42:33 -0700 Tracy Reed tr...@ultraviolet.org schrieb: Reasons why I am currently migrating away from AoE to iSCSI (*sigh*): 1. Disk alignment between Xen VMs and the target. What do you mean by that? Lars

Re: [Aoetools-discuss] AoE blog article

2012-04-24 Thread Lars Täuber
Hi there! Am Tue, 24 Apr 2012 03:25:37 + Jeff Sturm jeff.st...@eprize.com schrieb: [...] They should have merged the module updates into the upstream kernel. Yes. That's my opinion too. Thanks to this thread I just recognized, that the vanilla kernel driver got stuck at version 47. While

Re: [Aoetools-discuss] AoE blog article

2012-04-24 Thread Jeff Sturm
-Original Message- From: Lars Täuber [mailto:taeu...@bbaw.de] Sent: Tuesday, April 24, 2012 3:52 AM Thanks to this thread I just recognized, that the vanilla kernel driver got stuck at version 47. While the coraid driver version is 79. We used opensuse and now are using ubuntu

Re: [Aoetools-discuss] AoE blog article

2012-04-24 Thread Tracy Reed
On Tue, Apr 24, 2012 at 03:50:33PM +, Jeff Sturm spake thusly: (AoE multipath really demonstrates the advantages of a simple protocol--there's nothing involved in making it work other than plugging in additional interfaces.) Agree completely. Simplicity has always been one of the primary

[Aoetools-discuss] AoE blog article

2012-04-23 Thread Tracy Reed
Here's a good blog article on some of the current problems with AoE that are killing its adoption and therefore utility to potential Coraid customers: http://www.typinganimal.net/wp/2012/04/16/red-hat-just-doesnt-get-aoe/ -- Tracy Reed pgpHVHTwd28x9.pgp Description: PGP signature

Re: [Aoetools-discuss] AoE blog article

2012-04-23 Thread Joshua J. Kugler
On Monday, April 23, 2012, Tracy Reed elucidated thus: Here's a good blog article on some of the current problems with AoE that are killing its adoption and therefore utility to potential Coraid customers: http://www.typinganimal.net/wp/2012/04/16/red-hat-just-doesnt-get-aoe / Sounds like