Palantir will now discard the domain in its Xen server and from
this point on, boromir will become the primary host for
this domain.
6. Activation: The migrated domain is activated on boromir. All the device
drivers inside the domain are now reattached to the new machine.
Chapter 8
[ 121 ]
The following diagram shows this whole interaction. As you can see there is a lot of
stuff happening under the covers to make this operation so smooth and seamless!
Migration
[ 122 ]
Some of the significant advantages of using Xen live migration are as follows:
It enables the maintenance of the physical servers that host the virtual
machines in a proactive manner. You can monitor the servers and resolve
potential and suspected problems by relocating the systems very quickly.
You can use live migration of Xen along with a high-availability solution
such as heartbeat to provide a failover system. The latest versions of
Enterprise SuSe Linux Server and Red Hat Enterprise Linux provide high
availability solutions using Xen.
You can meet your Service Level Agreements for services easily and you can
avoid any disruption of business critical services.
It makes the balancing of load across multiple servers possible. This will
let you optimize and better utilize the computing resources across the
enterprise. There is no support currently in the open source version of xen for
automating the migration upon sensing failures in dom0.
It makes it simple to add more computing power to your system
configuration as you need it.
Pages:
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112