RE: [Xen-users] best practices in using shared storage forXENVirtualMachines and auto-failover?

[Jeff Sturm <jeff.sturm@xxxxxxxxxx>]

> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx [mailto:xen-users-
> bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Freddie Cash
> Sent: Thursday, October 14, 2010 11:38 AM
> To: xen-users
> Subject: Re: [Xen-users] best practices in using shared storage 
> forXENVirtualMachines
> and auto-failover?
> 
> > You don't need a clustered filesystem. ÂYou don't need a shared
> > filesystem at all. ÂJust partition your shared block storage (with a
> > clustered logical volume manager if needed) and use a logical volume
> > for each domU image.
> 
> Would you run the iSCSI initiator in the host and attach the block device to 
> the guest?
> Or would you run the iSCSI initiator in the guest?

I like to do the former.  That makes the guest easier--you don't have to figure 
out things like modifying initrd to do boot-from-SAN.

> How does the migration from one host machine to another work with iSCSI?

No different than migration with any other shared storage.  Just make sure each 
dom0 has a working initiator, and is logged into the appropriate targets.  If 
your SAN has ACLs, you'll need to allow access from every possible dom0.

-Jeff

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