Xen users - Feb 2009 - How to implement HA and Live Migration with a SAN?

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



_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Hi,

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.

Regards,

Barry

On Thu, Feb 5, 2009 at 1:02 PM, Massimiliano De Ruosi
<max.deruosi@uniud.it> 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
>
>
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@lists.xensource.com
> http://lists.xensource.com/xen-users
>


-- 
Barry van Someren
---------------------------------------
Email: barry@bvansomeren.com
Email: goltharnl@gmail.com
Linked in: http://www.linkedin.com/in/barryvansomeren
KvK: 27317624

_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users

Clustered LVM sounds good, I''ll try it. Thank you.

Max.

Quoting Barry van Someren <barry@coffeesprout.com>:
> Hi,
>
> 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.
>
> Regards,
>
> Barry
----------------------------------------------------------------------
SEMEL (SErvizio di Messaging ELettronico) - CSIT -Universita'' di Udine



_______________________________________________
Xen-users mailing list
Xen-users@lists.xensource.com
http://lists.xensource.com/xen-users