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Re: [Xen-users] How to implement HA and Live Migration with a SAN?

To: Massimiliano De Ruosi <max.deruosi@xxxxxxxx>
Subject: Re: [Xen-users] How to implement HA and Live Migration with a SAN?
From: Barry van Someren <barry@xxxxxxxxxxxxxxxx>
Date: Thu, 5 Feb 2009 14:00:58 +0100
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There are several ways of doing this.. I'm just going to detail mine..
-Setup clustered LVM (CLVMD) on top of the iSCSI LUN
-Place the DomU images on the LUN
-Write scripts for migration (I mount local files to the DomU for the
swap and /tmp as these can be discarded on reboot.. this does negate
live migration though!)
-Have some form of heartbeat which can restart the DomU's on a
different clusternode.

CentOS/Redhat also includes Ricci and Luci which allows you to set all
this up, but I'm going to need some more control over this so the
heartbeat will be done by internal development.



On Thu, Feb 5, 2009 at 1:02 PM, Massimiliano De Ruosi
<max.deruosi@xxxxxxxx> wrote:
> Hello,
> I've configured two xen hosts (dom0) sharing a LUN on a SAN.
> My firs obiective is to run different domU on the two hosts, and implement
> live migration between them.
> Subsequently, I'd like to implement HA, so if a xen host goes down, domUs
> will be restarted on the other one.
> What's the better way to obtain this? I think I need a cluster file system
> to manage shared access on the LUN (ocfs2? ocfs2 on LVM?), and Hartbeat fo
> HA. Can someone share his experience, or point me to some documentation?
> Thanks in advance,
> Massimiliano.
> ----------------------------------------------------------------------
> SEMEL (SErvizio di Messaging ELettronico) - CSIT -Universita' di Udine
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Barry van Someren
Email: barry@xxxxxxxxxxxxxxx
Email: goltharnl@xxxxxxxxx
Linked in: http://www.linkedin.com/in/barryvansomeren
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