mirror of
https://gitlab.com/libvirt/libvirt.git
synced 2024-12-27 16:15:23 +00:00
300 lines
13 KiB
XML
300 lines
13 KiB
XML
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
|
<html xmlns="http://www.w3.org/1999/xhtml">
|
|
<body>
|
|
<h1>Node devices XML format</h1>
|
|
|
|
<ul id="toc"></ul>
|
|
|
|
<h2><a name="NodedevAttributes">Node Device XML</a></h2>
|
|
|
|
<p>
|
|
There are several libvirt functions, all with the
|
|
prefix <code>virNodeDevice</code>, which deal with management of
|
|
host devices that can be handed to guests via passthrough as
|
|
<hostdev> elements
|
|
in <a href="formatdomain.html#elementsHostDev">the domain XML</a>.
|
|
These devices are represented as a hierarchy, where a device on
|
|
a bus has a parent of the bus controller device; the root of the
|
|
hierarchy is the node named "computer".
|
|
</p>
|
|
|
|
<p>
|
|
When represented in XML, a node device uses the
|
|
top-level <code>device</code> element, with the following
|
|
elements present according to the type of device:
|
|
</p>
|
|
<dl>
|
|
<dt><code>name</code></dt>
|
|
<dd>The name for this device. The name will be alphanumeric,
|
|
with words separated by underscore. For many devices, the
|
|
name is just the bus type and address, as in
|
|
"pci_0000_00_02_1" or "usb_1_5_3", but some devices are able
|
|
to provide more specific names, such as
|
|
"net_eth1_00_27_13_6a_fe_00".
|
|
</dd>
|
|
<dt><code>parent</code></dt>
|
|
<dd>If this element is present, it names the parent device (that
|
|
is, a controller to which this node belongs).
|
|
</dd>
|
|
<dt><code>capability</code></dt>
|
|
<dd>This node appears for each capability that libvirt
|
|
associates with a node. A mandatory
|
|
attribute <code>type</code> lists which category the device
|
|
belongs to, and controls which further subelements will be
|
|
present to describe the node:
|
|
<dl>
|
|
<dt><code>system</code></dt>
|
|
<dd>Describes the overall host. Sub-elements include:
|
|
<dl>
|
|
<dt><code>product</code></dt>
|
|
<dd>If present, a simple text string giving the product
|
|
name of the system.</dd>
|
|
<dt><code>hardware</code></dt>
|
|
<dd>Describes the hardware of the system, including
|
|
sub-elements for <code>vendor</code>, <code>version</code>,
|
|
<code>serial</code>, and <code>uuid</code>.</dd>
|
|
<dt><code>firmware</code></dt>
|
|
<dd>Describes the firmware of the system, including
|
|
sub-elements for <code>vendor</code>, <code>version</code>,
|
|
and <code>release_date</code>.</dd>
|
|
</dl>
|
|
</dd>
|
|
<dt><code>pci</code></dt>
|
|
<dd>Describes a device on the host's PCI bus. Sub-elements
|
|
include:
|
|
<dl>
|
|
<dt><code>domain</code></dt>
|
|
<dd>Which domain the device belongs to.</dd>
|
|
<dt><code>bus</code></dt>
|
|
<dd>Which bus within the domain.</dd>
|
|
<dt><code>slot</code></dt>
|
|
<dd>Which slot within the bus.</dd>
|
|
<dt><code>function</code></dt>
|
|
<dd>Which function within the slot.</dd>
|
|
<dt><code>product</code></dt>
|
|
<dd>Product details from the device ROM, including an
|
|
attribute <code>id</code> with the hexadecimal product
|
|
id, and an optional text description of that id.</dd>
|
|
<dt><code>vendor</code></dt>
|
|
<dd>Vendor details from the device ROM, including an
|
|
attribute <code>id</code> with the hexadecimal vendor
|
|
id, and an optional text name of that vendor.</dd>
|
|
<dt><code>iommuGroup</code></dt>
|
|
<dd>
|
|
This optional element describes the "IOMMU group" this
|
|
device belongs to. If the element exists, it has a
|
|
mandatory <code>number</code> attribute which tells
|
|
the group number used for management of the group (all
|
|
devices in group "n" will be found in
|
|
"/sys/kernel/iommu_groups/n"). It will also have a
|
|
list of <code>address</code> subelements, each
|
|
containing the PCI address of a device in the same
|
|
group. The toplevel device will itself be included in
|
|
this list.
|
|
</dd>
|
|
<dt><code>capability</code></dt>
|
|
<dd>
|
|
This optional element can occur multiple times. If it
|
|
exists, it has a mandatory <code>type</code> attribute
|
|
which will be set to
|
|
either <code>physical_function</code>
|
|
or <code>virtual_functions</code>. If the type
|
|
is <code>physical_function</code>, there will be a
|
|
single <code>address</code> subelement which contains
|
|
the PCI address of the SRIOV Physical Function (PF)
|
|
that is the parent of this device (and this device is,
|
|
by implication, an SRIOV Virtual Function (VF)). If
|
|
the type is <code>virtual_functions</code>, then this
|
|
device is an SRIOV PF, and the capability element will
|
|
have a list of <code>address</code> subelements, one
|
|
for each VF on this PF.
|
|
</dd>
|
|
</dl>
|
|
</dd>
|
|
<dt><code>usb_device</code></dt>
|
|
<dd>Describes a device on the host's USB bus, based on its
|
|
location within the bus. Sub-elements include:
|
|
<dl>
|
|
<dt><code>bus</code></dt>
|
|
<dd>Which bus the device belongs to.</dd>
|
|
<dt><code>device</code></dt>
|
|
<dd>Which device within the bus.</dd>
|
|
<dt><code>product</code></dt>
|
|
<dd>Product details from the device ROM, including an
|
|
attribute <code>id</code> with the hexadecimal product
|
|
id, and an optional text description of that id.</dd>
|
|
<dt><code>vendor</code></dt>
|
|
<dd>Vendor details from the device ROM, including an
|
|
attribute <code>id</code> with the hexadecimal vendor
|
|
id, and an optional text name of that vendor.</dd>
|
|
</dl>
|
|
</dd>
|
|
<dt><code>usb</code></dt>
|
|
<dd>Describes a USB device, based on its advertised driver
|
|
interface. Sub-elements include:
|
|
<dl>
|
|
<dt><code>number</code></dt>
|
|
<dd>The device number.</dd>
|
|
<dt><code>class</code></dt>
|
|
<dd>The device class.</dd>
|
|
<dt><code>subclass</code></dt>
|
|
<dd>The device subclass.</dd>
|
|
<dt><code>protocol</code></dt>
|
|
<dd>The device protocol.</dd>
|
|
<dt><code>description</code></dt>
|
|
<dd>If present, a description of the device.</dd>
|
|
</dl>
|
|
</dd>
|
|
<dt><code>net</code></dt>
|
|
<dd>Describes a device capable for use as a network
|
|
interface. Sub-elements include:
|
|
<dl>
|
|
<dt><code>interface</code></dt>
|
|
<dd>The interface name tied to this device.</dd>
|
|
<dt><code>address</code></dt>
|
|
<dd>If present, the MAC address of the device.</dd>
|
|
<dt><code>capability</code></dt>
|
|
<dd>A network protocol exposed by the device, where the
|
|
attribute <code>type</code> can be "80203" for IEEE
|
|
802.3, or "80211" for various flavors of IEEE 802.11.
|
|
</dd>
|
|
</dl>
|
|
</dd>
|
|
<dt><code>scsi_host</code></dt>
|
|
<dd>Describes a SCSI host device. Sub-elements include:
|
|
<dl>
|
|
<dt><code>host</code></dt>
|
|
<dd>The SCSI host number.</dd>
|
|
<dt><code>capability</code></dt>
|
|
<dd>Current capabilities include "vports_ops" (indicates
|
|
vport operations are supported) and "fc_host". "vport_ops"
|
|
could contain two optional sub-elements: <code>vports</code>,
|
|
and <code>max_vports</code>. <code>vports</code> shows the
|
|
number of vport in use. <code>max_vports</code> shows the
|
|
maximum vports the HBA supports. "fc_host" implies following
|
|
sub-elements: <code>wwnn</code>, <code>wwpn</code>, and
|
|
<code>fabric_wwn</code>.
|
|
</dd>
|
|
</dl>
|
|
</dd>
|
|
<dt><code>scsi</code></dt>
|
|
<dd>Describes a SCSI device. Sub-elements include:
|
|
<dl>
|
|
<dt><code>host</code></dt>
|
|
<dd>The SCSI host containing the device.</dd>
|
|
<dt><code>bus</code></dt>
|
|
<dd>The bus within the host.</dd>
|
|
<dt><code>target</code></dt>
|
|
<dd>The target within the bus.</dd>
|
|
<dt><code>lun</code></dt>
|
|
<dd>The lun within the target.</dd>
|
|
<dt><code>type</code></dt>
|
|
<dd>The type of SCSI device.</dd>
|
|
</dl>
|
|
</dd>
|
|
<dt><code>storage</code></dt>
|
|
<dd>Describes a device usable for storage. Sub-elements
|
|
include:
|
|
<dl>
|
|
<dt><code>block</code></dt>
|
|
<dd>A block device file name that accesses the storage
|
|
present on the device.</dd>
|
|
<dt><code>bus</code></dt>
|
|
<dd>If present, the name of the bus the device is found
|
|
on.</dd>
|
|
<dt><code>drive_type</code></dt>
|
|
<dd>The type of the drive, such as "disk" or
|
|
"cdrom".</dd>
|
|
<dt><code>model</code></dt>
|
|
<dd>Any model information available from the
|
|
device.</dd>
|
|
<dt><code>vendor</code></dt>
|
|
<dd>Any vendor information available from the
|
|
device.</dd>
|
|
<dt><code>serial</code></dt>
|
|
<dd>Any serial number information available from the
|
|
device.</dd>
|
|
<dt><code>size</code></dt>
|
|
<dd>For fixed-size storage, the amount of storage
|
|
available.</dd>
|
|
<dt><code>capability</code></dt>
|
|
<dd>If present, an additional capability is listed via
|
|
the attribute <code>type</code>. Current capabilities
|
|
include "hotpluggable" and "removable", with the
|
|
latter implying the following
|
|
sub-elements: <code>media_available</code> (0 or
|
|
1), <code>media_size</code>,
|
|
and <code>media_label</code>.</dd>
|
|
</dl>
|
|
</dd>
|
|
</dl>
|
|
</dd>
|
|
</dl>
|
|
|
|
<h2><a name="nodeExample">Examples</a></h2>
|
|
|
|
<p>The following are some example node device XML outputs:</p>
|
|
<pre>
|
|
<device>
|
|
<name>computer</name>
|
|
<capability type='system'>
|
|
<product>2241B36</product>
|
|
<hardware>
|
|
<vendor>LENOVO</vendor>
|
|
<version>ThinkPad T500</version>
|
|
<serial>R89055N</serial>
|
|
<uuid>c9488981-5049-11cb-9c1c-993d0230b4cd</uuid>
|
|
</hardware>
|
|
<firmware>
|
|
<vendor>LENOVO</vendor>
|
|
<version>6FET82WW (3.12 )</version>
|
|
<release_date>11/26/2009</release_date>
|
|
</firmware>
|
|
</capability>
|
|
</device>
|
|
|
|
<device>
|
|
<name>net_eth1_00_27_13_6a_fe_00</name>
|
|
<parent>pci_0000_00_19_0</parent>
|
|
<capability type='net'>
|
|
<interface>eth1</interface>
|
|
<address>00:27:13:6a:fe:00</address>
|
|
<capability type='80203'/>
|
|
</capability>
|
|
</device>
|
|
|
|
<device>
|
|
<name>pci_0000_02_00_0</name>
|
|
<path>/sys/devices/pci0000:00/0000:00:04.0/0000:02:00.0</path>
|
|
<parent>pci_0000_00_04_0</parent>
|
|
<driver>
|
|
<name>igb</name>
|
|
</driver>
|
|
<capability type='pci'>
|
|
<domain>0</domain>
|
|
<bus>2</bus>
|
|
<slot>0</slot>
|
|
<function>0</function>
|
|
<product id='0x10c9'>82576 Gigabit Network Connection</product>
|
|
<vendor id='0x8086'>Intel Corporation</vendor>
|
|
<capability type='virt_functions'>
|
|
<address domain='0x0000' bus='0x02' slot='0x10' function='0x0'/>
|
|
<address domain='0x0000' bus='0x02' slot='0x10' function='0x2'/>
|
|
<address domain='0x0000' bus='0x02' slot='0x10' function='0x4'/>
|
|
<address domain='0x0000' bus='0x02' slot='0x10' function='0x6'/>
|
|
<address domain='0x0000' bus='0x02' slot='0x11' function='0x0'/>
|
|
<address domain='0x0000' bus='0x02' slot='0x11' function='0x2'/>
|
|
<address domain='0x0000' bus='0x02' slot='0x11' function='0x4'/>
|
|
</capability>
|
|
<iommuGroup number='12'>
|
|
<address domain='0x0000' bus='0x02' slot='0x00' function='0x0'/>
|
|
<address domain='0x0000' bus='0x02' slot='0x00' function='0x1'/>
|
|
</iommuGroup>
|
|
</capability>
|
|
</device>
|
|
</pre>
|
|
|
|
</body>
|
|
</html>
|