Installation guide
Xen
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15.1.10. Guest Device ABI Stability
As part of the new qdev device model, the guest ABI is now stable and will be kept consistent for
newer releases. The devices and device arrangements on guests will remain consistent in future
updates. This feature resolves issues with some operating system activation processes.
Note
Red Hat Enterprise Linux 6 includes components providing functionality for the Simple
Protocol for Independent Computing Environments (SPICE) remote display protocol. These
components are only supported for use in conjunction with Red Hat Enterprise Virtualization
products and are not guaranteed to have a stable ABI. The components will be updated to
synchronize with functional requirements of Red Hat Enterprise Virtualization products. Migration
to future releases may require manual operations on a per-system basis.
15.2. Xen
Red Hat Enterprise Linux 6 is supported as a Xen guest for the x86 and the AMD 64 and Intel 64
architectures. The para-virtualized operations (pv-ops) are included in the Red Hat Enterprise Linux
6 kernel. The default Red Hat Enterprise Linux 6 kernel can be used as a Xen para-virtualized guest
and as a Xen fully virtualized guest on Red Hat Enterprise Linux 5 hosts. Red Hat Enterprise Linux 6
includes the para-virtualized drivers for fully virtualized Xen guest installations.
Red Hat Enterprise Linux 6 is not supported as a Xen host.
Further Reading
The Virtualization Guide
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details the process to install, configure and manage the virtualization
technologies in Red Hat Enterprise Linux 6.
15.3. virt-v2v
Red Hat Enterprise Linux 6 features the new virt-v2v tool, enabling system administrators to
convert and import virtual machines created on other systems such as Xen and VMware ESX to
KVM. virt-v2v provides a migration path for Xen guests running on a Red Hat Enterprise Linux 5
hypervisor.
16. Supportability and Maintenance
16.1. firstaidkit System Recovery Tool
Red Hat Enterprise Linux 6 includes the new firstaidkit system recovery tool. By automating
common recovery processes, firstaidkit provides an interactive environment to assist in the
troubleshooting and recovery of a system that boots incorrectly. Additionally, system administrators are
able to create custom automated recovery processes using the firstaidkit plugin infrastructure.
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http://docs.redhat.com/docs/en-US/Red_Hat_Enterprise_Linux/6/html/Virtualization/index.html