This also makes failover more easy, as volumes are already shared via iscsi on 
both nodes.
I have to poke it next week to see performance numbers, I could imagine it 
plays within expected iscsi performance, or it should atleast.

Yours
Markus Kovero
-----Original Message-----
From: Richard Elling [mailto:richard.ell...@gmail.com] 
Sent: 11. syyskuuta 2009 19:53
To: Markus Kovero
Cc: zfs-discuss@opensolaris.org
Subject: Re: [zfs-discuss] sync replication easy way?

On Sep 11, 2009, at 5:05 AM, Markus Kovero wrote:

> Hi, I was just wondering following idea, I guess somebody mentioned  
> something similar and I'd like some thoughts on this.
>
> 1.       create iscsi volume on Node-A and mount it locally with  
> iscsiadm
> 2.       create pool with this local iscsi-share
> 3.       create iscsi volume on Node-B and share it to Node-A
> 4.       create mirror from both disks on Node-A; zpool attach  
> foopool localiscsivolume remotevolume
>
> Why not? After quick test it seems to fail and resilver like it  
> should when nodes fail. Actual failover needs to be done manually  
> though, but am I missing something relevant here?

This is more complicated than the more commonly used, simpler method:
        1. create iscsi volume on Node-B, share to Node-A
        2. zpool create mypool mirror local-vdev iscsi-vdev

  -- richard

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