Example 12-20 Example of Migrating a Virtual Machine from the Currently
Running Node to Another Node
This example migrates a virtual machine named
myvm1
# oakcli migrate vm myvm1
How to Create Driver Domain Virtual Machines
Use driver domain virtual machines to improve performance.
• About Driver Domain Virtual Machines
Use driver domain virtual machines to improve performance by enabling guest
virtual machines (VMs) to use
ODA_BASE
instead of
Dom0
to access virtual disks.
• Creating a Driver Domain Virtual Machine from a Template
Create a driver domain virtual machine from a virtual machine template.
• Converting a Virtual Machine to a Driver Domain Virtual Machine
Convert a guest virtual machine to a driver domain virtual machine to improve
performance.
• Converting a Root Disk to a Driver Domain Disk
Set up your guest virtual machine (guest VM) root disk as a driver domain and
create a new disk as the boot driver.
About Driver Domain Virtual Machines
Use driver domain virtual machines to improve performance by enabling guest virtual
machines (VMs) to use
ODA_BASE
instead of
Dom0
to access virtual disks.
A driver domain is a user domain that has special privileges and responsibilities for a
particular piece of hardware. When you use the driver domain option, the newly
created virtual disks are mounted directly from
ODA_BASE
to a guest virtual machine.
The option improves I/O performance by enabling guest virtual machines to use
ODA_BASE
instead of
Dom0
to access virtual disks.
The driver domain functionality applies to non-system disks. Once a virtual machine is
created in driver domain mode, any new vDisks are added in driver domain mode.
Newly created virtual disks are mounted directly from
ODA_BASE
to a guest virtual
machine. To determine if a virtual machine is configured in driver domain mode, use
the
oakcli show vm
vmname command. When the virtual machine is in driver mode,
the output for the DriverDomain attribute is TRUE.
The virtual disk and
vm.cfg
files are stored in the following directories:
•
Dom0
: /Repositories/vm_repo_name/.ACFS/snaps/vm_name/
VirtualMachines/vm_name
•
ODA_BASE
: /app/sharedrepo/vm_repo_name/.ACFS/snaps/vm_name/
VirtualMachines/vm_name
The driver domain only works when you add virtual disks to a guest virtual
machine. When a virtual machine is in driver domain mode, the corresponding virtual
machine configuration file,
vm.cfg
, has the following disk entries:
Chapter 12
How to Create Driver Domain Virtual Machines
12-31
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