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_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

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.

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