Sys::Virt::NodeDevice(3p)

NAME
Sys::Virt::NodeDevice - Represent & manage a libvirt storage pool

DESCRIPTION
The "Sys::Virt::NodeDevice" module represents a storage pool managed by libvirt. There are a variety of storage pool implementations for LVM, Local directories/filesystems, network filesystems, disk partitioning, iSCSI, and SCSI.

METHODS

my $name = $dev->get_name()
    Returns a string with a locally unique name of the device

my $parentname = $dev->get_parent()
    Returns a string with a locally unique name of the parent of the device, or undef if there is no parent

my $xml = $dev->get_xml_description($flags=0)
    Returns an XML document containing a complete description of the node device's configuration. The optional $flags parameter controls generation of the XML document, defaulting to 0 if omitted. It can be one or more of the XML DUMP constants listed later in this document.

$dev->reattach()
    Rebind the node device to the host OS device drivers.

$dev->dettach()
    Unbind the node device from the host OS device driver

$dev->reset()
    Reset the node device. The device must be unbound from the host OS drivers for this to work

$dev->create($flags=0)
    Start a node device whose configuration was previously defined using the "define_node_device" method in Sys::Virt. The $flags parameter is currently unused and defaults to zero.

$dev->undefine($flags=0)
    Delete a node device whose configuration was previously defined using the "define_node_device" method in Sys::Virt. The $flags parameter is currently unused and defaults to zero.

$flag = $dev->get_autostart();
    Return a true value if the node device is configured to automatically start upon boot. Return false, otherwise

$dev->set_autostart($flag)
    Set the state of the autostart flag, which determines whether the node device will automatically start upon boot of the host OS.

$dev->is_active()
    Returns a true value if the node device is currently running

$dev->is_persistent()
    Returns a true value if the node device has a persistent configuration file defined

$dev->destroy()
    Destroy the virtual device releasing any OS resources associated with it.

my @caps = $dev->list_capabilities()
    Return a list of all capabilities in the device.

$dev->update($xml, $flags=0)
    Update the definition of an existing node device with $xml. The $flags parameter can be use to control which config is affected (see XML UPDATE FLAGS) and defaults to zero (affect current state of the node device).

CONSTANTS
This section documents constants that are used with various APIs described above

  LIST FILTERING
The following constants are used to filter object lists

Sys::Virt::NodeDevice::LIST_CAP_NET
    Include devices with the network capability

Sys::Virt::NodeDevice::LIST_CAP_PCI_DEV
    Include devices with the PCI device capability

Sys::Virt::NodeDevice::LIST_CAP_SCSI
    Include devices with the SCSI capability

Sys::Virt::NodeDevice::LIST_CAP_SCSI_HOST
    Include devices with the SCSI host capability

Sys::Virt::NodeDevice::LIST_CAP_SCSI_TARGET
    Include devices with the SCSI target capability

Sys::Virt::NodeDevice::LIST_CAP_STORAGE
    Include devices with the storage capability

Sys::Virt::NodeDevice::LIST_CAP_SYSTEM
    Include devices with the system capability

Sys::Virt::NodeDevice::LIST_CAP_USB_DEV
    Include devices with the USB device capability

Sys::Virt::NodeDevice::LIST_CAP_USB_INTERFACE
    Include devices with the USB interface capability

Sys::Virt::NodeDevice::LIST_CAP_FC_HOST
    Include devices with the fibre channel host capability

Sys::Virt::NodeDevice::LIST_CAP_VPORTS
    Include devices with the NPIV vport capability

Sys::Virt::NodeDevice::LIST_CAP_SCSI_GENERIC
    Include devices with the SCSI generic capability

Sys::Virt::NodeDevice::LIST_CAP_DRM
    Include devices with the DRM capability

Sys::Virt::NodeDevice::LIST_CAP_MDEV
    Include mediated devices

Sys::Virt::NodeDevice::LIST_CAP_MDEV_TYPES
    Include devices capable of mediated devices

Sys::Virt::NodeDevice::LIST_CAP_CCW_DEV
    Include CCW devices

Sys::Virt::NodeDevice::LIST_CAP_CSS_DEV
    Include CSS devices

Sys::Virt::NodeDevice::LIST_CAP_VDPA
    Include VDPA devices

Sys::Virt::NodeDevice::LIST_CAP_AP_CARD
    Include s390 AP card devices

Sys::Virt::NodeDevice::LIST_CAP_AP_MATRIX
    Include s390 AP matrix devices

Sys::Virt::NodeDevice::LIST_CAP_AP_QUEUE
    Include s390 AP queue devices

Sys::Virt::NodeDevice::LIST_CAP_VPD
    Include PCI devices with VPD

Sys::Virt::NodeDevice::LIST_CAP_CCWGROUP_DEV
    Include s390 CCW group devices

Sys::Virt::NodeDevice::LIST_CAP_CCWGROUP_MEMBER
    Include s390 CCW group members

Sys::Virt::NodeDevice::LIST_ACTIVE
    Include active devices

Sys::Virt::NodeDevice::LIST_INACTIVE
    Include inactive devices

Sys::Virt::NodeDevice::LIST_PERSISTENT
    Include persistent devices

Sys::Virt::NodeDevice::LIST_TRANSIENT
    Include transient devices

  EVENT ID CONSTANTS

Sys::Virt::NodeDevice::EVENT_ID_LIFECYCLE
    Node device lifecycle events

Sys::Virt::NodeDevice::EVENT_ID_UPDATE
    Node device config update events

  LIFECYCLE CHANGE EVENTS
The following constants allow node device lifecycle change events to be interpreted. The events contain both a state change, and a reason though the reason is currently unused.

Sys::Virt::NodeDevice::EVENT_CREATED
    Indicates that a device was created

Sys::Virt::NodeDevice::EVENT_DELETED
    Indicates that a device has been deleted

Sys::Virt::NodeDevice::EVENT_DEFINED
    Indicates that a device configuration has been created

Sys::Virt::NodeDevice::EVENT_UNDEFINED
    Indicates that a device configuration has been deleted

  NODE DEVICE CREATION

Sys::Virt::NodeDevice::CREATE_XML_VALIDATE
    Validate the XML document against schema

  NODE DEVICE DEFINE

Sys::Virt::NodeDevice::DEFINE_XML_VALIDATE
    Validate the XML document against schema

  NODE DEVICE UPDATE

Sys::Virt::NodeDevice::UPDATE_AFFECT_CURRENT
    Affect live if node device is active, config if it's not active

Sys::Virt::NodeDevice::UPDATE_AFFECT_LIVE
    Affect live state of node device only

Sys::Virt::NodeDevice::UPDATE_AFFECT_CONFIG
    Affect persistent config only

  XML DUMP OPTIONS
The following constants are used to control the information included in the XML configuration dump

Sys::Virt::NodeDevice::XML_INACTIVE
    Report the persistent inactive configuration for the node device.

AUTHORS
Daniel P. Berrange <berrange@redhat.com>

COPYRIGHT
Copyright (C) 2006-2009 Red Hat Copyright (C) 2006-2009 Daniel P. Berrange

LICENSE
This program is free software; you can redistribute it and/or modify it under the terms of either the GNU General Public License as published by the Free Software Foundation (either version 2 of the License, or at your option any later version), or, the Artistic License, as specified in the Perl README file.

SEE ALSO
Sys::Virt, Sys::Virt::Error, "http://libvirt.org"