The ovm_vmcontrol
utility has the following
command line options:
-u user name of an Oracle VM Manager admin user (required)
-p password corresponding with the admin user name (required)
-h host name of the server running Oracle VM Manager (required)
-X use SSL to connect to Oracle VM Manager
-v virtual machine name
-U virtual machine UUID
-t name of target Oracle VM Server for migration of a virtual machine (use together with -c migrate)
-s comma separated list of physical thread numbers to bind virtual CPUs to (use together with -c vcpuset)
-T tag list, a comma separated list of strings to be associated with a virtual machine as metadata (use together with -c settags)
-F force the virtual disks associated with a virtual machine to be deleted (use together with -c delete)
-A acknowledge virtual machine events (use together with -c events)
-c console command (required)
[commands: start,
stop, suspend, resume, status, restart, kill, delete, info,
fixcfg, events, lock, vcpuset, vcpuget, migrate, settags,
gettags, list
]
As you can see, the ovm_vmcontrol
console
command list contains a lock command.
This special command allows you to lock a virtual machine for
a certain period of time. When a virtual machine is locked by
the utility, it is not possible for other tools or users
(through the Oracle VM Manager user interface) to perform operations on
that specific VM. This is particularly useful if you are an
administrator and need to make a VM backup while the VM is
stopped: you want to prevent anyone starting the VM before the
backup finishes.
The list
command does not need a VM name or
UUID argument. It lists every VM and its status.
The fixcfg
command verifies the vm.cfg file
of the virtual machine and attempts to correct invalid
entries. For example, an entry for
vncpasswd
will be cleared with this
command, because the virtual machine console does not support
this setting.
The vcpuset
command hard-binds or pins
virtual CPUs to threads. For example, -c vcpuset -s
(0,1,2)
physically binds vcpu0 to thread0, vcpu1 to
thread1, vcpu2 to thread2. Use the vcpuget
command to retrieve information about pinned vCPUs for the
selected virtual machine.
The settags
and gettags
commands are used to manage tag metadata for a given virtual
machine.