Commit Graph

524 Commits

Author SHA1 Message Date
Matthias Gatto
e34ffa96fb qemu: Modify the structure _virDomainBlockIoTuneInfo.
Modify the structure _virDomainBlockIoTuneInfo to support these the new
options.
Change the initialization of the variable expectedInfo in qemumonitorjsontest.c
to avoid compiling problem.
Add documentation about the new xml options

Signed-off-by: Matthias Gatto <matthias.gatto@outscale.com>
2014-11-10 15:48:59 +01:00
Prerna Saxena
e3c44f0d36 cpu_conf: Allow specification of 'units' for @memory on numa nodes.
CPU numa topology implicitly allows memory specification in 'KiB'.

Enabling this to accept the 'unit' in which memory needs to be specified.
This now allows users to specify memory in units of choice, and
lists the same in 'KiB' -- just like other 'memory' elements in XML.

    <numa>
      <cell cpus='0-3' memory='1024' unit='MiB' />
      <cell cpus='4-7' memory='1024' unit='MiB' />
    </numa>

Also augment test cases to correctly model NUMA memory specification.
This adds the tag 'unit="KiB"' for memory attribute in NUMA cells.

Signed-off-by: Prerna Saxena <prerna@linux.vnet.ibm.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-11-10 14:55:45 +01:00
Laine Stump
07450cd429 conf: add trustGuestRxFilters attribute to network and domain interface
This new attribute will control whether or not libvirt will pay
attention to guest notifications about changes to network device mac
addresses and receive filters. The default for this is 'no' (for
security reasons). If it is set to 'yes' *and* the specified device
model and connection support it (currently only macvtap+virtio) then
libvirt will watch for NIC_RX_FILTER_CHANGED events, and when it
receives one, it will issue a query-rx-filter command, retrieve the
result, and modify the host-side macvtap interface's mac address and
unicast/multicast filters accordingly.

The functionality behind this attribute will be in a later patch. This
patch merely adds the attribute to the top-level of a domain's
<interface> as well as to <network> and <portgroup>, and adds
documentation and schema/xml2xml tests. Rather than adding even more
test files, I've just added the net attribute in various applicable
places of existing test files.
2014-10-06 11:49:10 -04:00
Martin Kletzander
540a84ec89 docs, conf, schema: add support for shmem device
This patch adds parsing/formatting code as well as documentation for
shared memory devices.  This will currently be only accessible in QEMU
using it's ivshmem device, but is designed as generic as possible to
allow future expansion for other hypervisors.

In the devices section in the domain XML users may specify:

- For shmem device using a server:

 <shmem name='shmem0'>
   <server path='/tmp/socket-ivshmem0'/>
   <size unit='M'>32</size>
   <msi vectors='32' ioeventfd='on'/>
 </shmem>

- For ivshmem device not using an ivshmem server:

 <shmem name='shmem1'>
   <size unit='M'>32</size>
 </shmem>

Most of the configuration is made optional so it also allows
specifications like:

 <shmem name='shmem1/>
 <shmem name='shmem2'>
   <server/>
 </shmem>

Signed-off-by: Maxime Leroy <maxime.leroy@6wind.com>
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-10-03 22:43:08 +02:00
Erik Skultety
1be67cd31b storage: Fix logical pool fmt type
According to our documentation logical pool supports formats 'auto' and
'lvm2'. However, in storage_conf.c we previously defined storage pool
formats: unknown, lvm2. Due to backward compatibility reasons
we must continue refer to pool format type 'unknown' instead of 'auto'.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1123767
2014-09-29 05:59:09 -04:00
Ján Tomko
5b3536ae90 conf: add options for disabling segment offloading
Add options for tuning segment offloading:
<driver>
  <host csum='off' gso='off' tso4='off' tso6='off'
        ecn='off' ufo='off'/>
  <guest csum='off' tso4='off' tso6='off' ecn='off' ufo='off'/>
</driver>
which control the respective host_ and guest_ properties
of the virtio-net device.
2014-09-24 16:16:45 +02:00
Jianwei Hu
e1dfb6681a schema: properly set tap and vhost backend attributes optional
Each attribute is optional, commit af8b4a2 forgot to mention that.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-09-22 16:54:26 +02:00
John Ferlan
58abf1bb36 hostdev: Add "rawio" attribute to _virDomainHostdevSubsysSCSI
Add the 'rawio' attribute to match _virDomainDiskDef and process the
hostdev XML similarly to the disk XML for a lun which supports/requires rawio
2014-09-19 07:47:46 -04:00
Roman Bogorodskiy
b4af40226d storage: zfs: implement pool build and delete
- Provide an implementation for buildPool and deletePool operations
   for the ZFS storage backend.
 - Add VIR_STORAGE_POOL_SOURCE_DEVICE flag to ZFS pool poolOptions
   as now we can specify devices to build pool from
 - storagepool.rng: add an optional 'sourceinfodev' to 'sourcezfs' and
   add an optional 'target' to 'poolzfs' entity
 - Add a couple of tests to storagepoolxml2xmltest
2014-09-18 18:08:29 +04:00
Michal Privoznik
f05b6a918e domaincaps: Expose UEFI binary path, if it exists
Check to see if the UEFI binary mentioned in qemu.conf actually
exists, and if so expose it in domcapabilities like

<loader ...>
  <value>/path/to/ovmf</value>
</loader>

We introduce some generic domcaps infrastructure for handling
a dynamic list of string values, it may be of use for future bits.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-09-17 16:29:49 +02:00
Martin Kletzander
def6b35989 docs, conf, schema: add support for shared memory mapping
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-09-17 16:10:26 +02:00
Martin Kletzander
f864aac90b schemas: finish virTristate{Bool,Switch} transition
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-09-17 16:10:26 +02:00
Michal Privoznik
4f76621c0e domaincaps: Expose UEFI capability
As of 542899168c we learned libvirt to use UEFI for domains.
However, management applications may firstly query if libvirt
supports it. And this is where virConnectGetDomainCapabilities()
API comes handy.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-09-17 09:42:33 +02:00
Ján Tomko
af8b4a2e6f conf: add backend element to interfaces
For tuning the network, alternative devices
for creating tap and vhost devices can be specified via:
<backend tap='/dev/net/tun' vhost='/dev/net-vhost'/>
2014-09-16 15:38:34 +02:00
Eric Blake
7e8feed4a7 cputune: allow interleaved xml
I noticed this with the recent iothread pinning code, but the
problem existed longer than that. The XML validation required
users to supply <cputune> children in a strict order, even though
there was no conceptual reason why they can't occur in any order.

docs/ changes best viewed with -w

* docs/schemas/domaincommon.rng (cputune): Add interleave.
* tests/qemuxml2argvdata/qemuxml2argv-cputune-iothreads.xml: Swap
up order, copying canonical form...
* tests/qemuxml2xmloutdata/qemuxml2xmlout-cputune-iothreads.xml:
...here.
* tests/qemuxml2xmltest.c (mymain): Mark the difference.

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-09-15 18:59:40 -06:00
John Ferlan
938fb12fad domain_conf: Add iothreadpin to cputune
https://bugzilla.redhat.com/show_bug.cgi?id=1101574

Add an option 'iothreadpin' to the <cpuset> to allow for setting the
CPU affinity for each IOThread.

The iothreadspin will mimic the vcpupin with respect to being able to
assign each iothread to a specific CPU, although iothreads ids start
at 1 while vcpu ids start at 0. This matches the iothread naming scheme.
2014-09-15 13:19:01 -04:00
Erik Skultety
3aa0524104 network: check for invalid forward delay time
When spanning tree protocol is allowed in bridge settings, forward delay
value is set as well (default is 0 if omitted). Until now, there was no
check for delay value validity. Delay makes sense only as a positive
numerical value.

Note: However, even if you provide positive  numerical value, brctl
utility only uses values from range <2,30>, so the number provided can
be modified (kernel most likely) to fall within this range.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1125764
2014-09-15 17:44:37 +02:00
Michal Privoznik
742b08e30f qemu: Automatically create NVRAM store
When using split UEFI image, it may come handy if libvirt manages per
domain _VARS file automatically. While the _CODE file is RO and can be
shared among multiple domains, you certainly don't want to do that on
the _VARS file. This latter one needs to be per domain. So at the
domain startup process, if it's determined that domain needs _VARS
file it's copied from this master _VARS file. The location of the
master file is configurable in qemu.conf.

Temporary, on per domain basis the location of master NVRAM file can
be overridden by this @template attribute I'm inventing to the
<nvram/> element. All it does is holding path to the master NVRAM file
from which local copy is created. If that's the case, the map in
qemu.conf is not consulted.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
2014-09-10 09:38:07 +02:00
Michal Privoznik
68bf13dbef conf: Extend <loader/> and introduce <nvram/>
Up to now, users can configure BIOS via the <loader/> element. With
the upcoming implementation of UEFI this is not enough as BIOS and
UEFI are conceptually different. For instance, while BIOS is ROM, UEFI
is programmable flash (although all writes to code section are
denied). Therefore we need new attribute @type which will
differentiate the two. Then, new attribute @readonly is introduced to
reflect the fact that some images are RO.

Moreover, the OVMF (which is going to be used mostly), works in two
modes:
1) Code and UEFI variable store is mixed in one file.
2) Code and UEFI variable store is separated in two files

The latter has advantage of updating the UEFI code without losing the
configuration. However, in order to represent the latter case we need
yet another XML element: <nvram/>. Currently, it has no additional
attributes, it's just a bare element containing path to the variable
store file.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
Acked-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-09-10 09:38:07 +02:00
John Ferlan
e2523de554 domain_conf: Add support for iothreads in disk definition
Add a new disk "driver" attribute "iothread" to be parsed as the thread
number for the disk to use. In order to more easily facilitate the usage
and configuration of the iothread, a "zero" for the attribute indicates
iothreads are not supported for the device and a positive value indicates
the specific thread to try and use.
2014-08-28 16:27:54 -04:00
John Ferlan
ee3a9620da domain_conf: Introduce iothreads XML
Introduce XML to allowing adding iothreads to the domain. These can be
used by virtio-blk-pci devices in order to assign a specific thread to
handle the workload for the device.  The iothreads are the official
implementation of the virtio-blk Data Plane that's been in tech preview
for QEMU.
2014-08-28 16:27:53 -04:00
Alex Williamson
d071164272 Add new 'kvm' domain feature and ability to hide KVM signature
QEMU 2.1 added support for the kvm=off option to the -cpu command,
allowing the KVM hypervisor signature to be hidden from the guest.
This enables disabling of some paravirualization features in the
guest as well as allowing certain drivers which test for the
hypervisor to load.  Domain XML syntax is as follows:

<domain type='kvm>
  ...
  <features>
    ...
    <kvm>
      <hidden state='on'/>
    </kvm>
  </features>
  ...

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
2014-08-26 10:41:24 +02:00
Martin Kletzander
43b8123d39 docs, conf: add support for bootmenu timeout
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-08-25 14:10:54 +02:00
Jianwei Hu
2a8fabba18 Maximum vlanid should be 4095 in interface.rng
The correct vlanid range is 0~4095.

After merging this patch, we can not validate a interface xml with vlanid >= 4096.
[root@localhost ~]# cat vlan.xml
<interface type='vlan' name='eno1.4096'>
   <start mode='onboot'/>
   <protocol family='ipv4'>
    <dhcp/>
   </protocol>
   <vlan tag='4096'>
     <interface name='eno1'/>
   </vlan>
</interface>
[root@localhost ~]# virt-xml-validate vlan.xml
vlan.xml:1: element interface: Relax-NG validity error : Invalid sequence in interleave
vlan.xml:6: element vlan: Relax-NG validity error : Element interface failed to validate content
vlan.xml:6: element vlan: Relax-NG validity error : Element vlan failed to validate attributes
vlan.xml fails to validate
[root@localhost ~]#

Here is a ip command help on this.
[root@localhost /]# ip link add link eno1 name eno1.90 type vlan help
Usage: ... vlan [ protocol VLANPROTO ] id VLANID                [ FLAG-LIST ]
                [ ingress-qos-map QOS-MAP ] [ egress-qos-map QOS-MAP ]

VLANPROTO: [ 802.1Q / 802.1ad ]
VLANID := 0-4095
FLAG-LIST := [ FLAG-LIST ] FLAG
FLAG := [ reorder_hdr { on | off } ] [ gvrp { on | off } ] [ mvrp { on | off } ]
        [ loose_binding { on | off } ]
QOS-MAP := [ QOS-MAP ] QOS-MAPPING
QOS-MAPPING := FROM:TO
2014-08-14 15:04:11 +02:00
Roman Bogorodskiy
0257d06ba4 storage: ZFS support
Implement ZFS storage backend driver. Currently supported
only on FreeBSD because of ZFS limitations on Linux.

Features supported:

 - pool-start, pool-stop
 - pool-info
 - vol-list
 - vol-create / vol-delete

Pool definition looks like that:

 <pool type='zfs'>
  <name>myzfspool</name>
  <source>
    <name>actualpoolname</name>
  </source>
 </pool>

The 'actualpoolname' value is a name of the pool on the system,
such as shown by 'zpool list' command. Target makes no sense
here because volumes path is always /dev/zvol/$poolname/$volname.

User has to create a pool on his own, this driver doesn't
support pool creation currently.

A volume could be used with Qemu by adding an entry like this:

    <disk type='volume' device='disk'>
      <driver name='qemu' type='raw'/>
      <source pool='myzfspool' volume='vol5'/>
      <target dev='hdc' bus='ide'/>
    </disk>
2014-08-12 19:40:20 +04:00
Peter Krempa
e260a0e60a conf: Add USB sound card support and implement it for qemu 2014-08-08 14:34:20 +02:00
John Ferlan
54ac483e68 hostdev: Add iSCSI hostdev XML
Introduce a new structure to handle an iSCSI host device based on the
existing virDomainHostdevSubsysSCSI by adding a "protocol='iscsi'" to
the <source/> element. The existing scsi_host subsystem RNG was modified
to read an optional "protocol='adapter'", although it won't be written
out nor is it documented as an option (by choice).

The new hostdev structure mimics the existing <disk/> element for an
iSCSI device (network) device. New XML is:

  <hostdev mode='subsystem' type='scsi' managed='yes'>
    <source protocol='iscsi' name='iqn.1992-01.com.example'>
      <host name='example.org' port='3260'/>
      <auth username='myname'>
        <secret type='iscsi' usage='mycluster_myname'/>
      </auth>
    </source>
    <address type='drive' controller='0' bus='0' target='2' unit='5'/>
  </hostdev>

The controller element will mimic the existing scsi_host code insomuch
as when 'lsi' and 'virtio-scsi' are used.
2014-08-07 15:07:56 -04:00
Eric Blake
232a31bea3 blockcommit: track job type in xml
A future patch is going to wire up qemu active block commit jobs;
but as they have similar events and are canceled/pivoted in the
same way as block copy jobs, it is easiest to track all bookkeeping
for the commit job by reusing the <mirror> element.  This patch
adds domain XML to track which job was responsible for creating a
mirroring situation, and adds a job='copy' attribute to all
existing uses of <mirror>.  Along the way, it also massages the
qemu monitor backend to read the new field in order to generate
the correct type of libvirt job (even though it requires a
future patch to actually cause a qemu event that can be reported
as an active commit).  It also prepares to update persistent XML
to match changes made to live XML when a copy completes.

* docs/schemas/domaincommon.rng: Enhance schema.
* docs/formatdomain.html.in: Document it.
* src/conf/domain_conf.h (_virDomainDiskDef): Add a field.
* src/conf/domain_conf.c (virDomainBlockJobType): String conversion.
(virDomainDiskDefParseXML): Parse job type.
(virDomainDiskDefFormat): Output job type.
* src/qemu/qemu_process.c (qemuProcessHandleBlockJob): Distinguish
active from regular commit.
* src/qemu/qemu_driver.c (qemuDomainBlockCopy): Set job type.
(qemuDomainBlockPivot, qemuDomainBlockJobImpl): Clean up job type
on completion.
* tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-mirror-old.xml:
Update tests.
* tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml: Likewise.
* tests/qemuxml2argvdata/qemuxml2argv-disk-active-commit.xml: New
file.
* tests/qemuxml2xmltest.c (mymain): Drive new test.

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-07-30 06:32:38 -06:00
Eric Blake
9a212d6708 blockcopy: add more XML for state tracking
Doing a blockcopy operation across a libvirtd restart is not very
robust at the moment.  In particular, we are clearing the <mirror>
element prior to telling qemu to finish the job.  Also, thanks to the
ability to request async completion, the user can easily regain
control prior to qemu actually finishing the effort, and they should
be able to poll the domain XML to see if the job is still going.

A future patch will fix things to actually wait until qemu is done
before modifying the XML to reflect the job completion.  But since
qemu issues identical BLOCK_JOB_COMPLETE events regardless of whether
the job was cancelled (kept the original disk) or completed (pivoted
to the new disk), we have to track which of the two operations were
used to end the job.  Furthermore, we'd like to avoid attempts to
end a job where we are already waiting on an earlier request to qemu
to end the job.  Likewise, if we miss the qemu event (perhaps because
it arrived during a libvirtd restart), we still need enough state
recorded to be able to determine how to modify the domain XML once
we reconnect to qemu and manually learn whether the job still exists.

Although this patch doesn't actually fix the problem, it is a
preliminary step that makes it possible to track whether a job
has already begun steps towards completion.

* src/conf/domain_conf.h (virDomainDiskMirrorState): New enum.
(_virDomainDiskDef): Convert bool mirroring to new enum.
* src/conf/domain_conf.c (virDomainDiskDefParseXML)
(virDomainDiskDefFormat): Handle new values.
* src/qemu/qemu_process.c (qemuProcessHandleBlockJob): Adjust
client.
* src/qemu/qemu_driver.c (qemuDomainBlockPivot)
(qemuDomainBlockJobImpl): Likewise.
* docs/schemas/domaincommon.rng (diskMirror): Expose new values.
* docs/formatdomain.html.in (elementsDisks): Document it.
* tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml: Test it.

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-07-29 15:36:30 -06:00
Michal Privoznik
136ad49740 domain: Introduce ./hugepages/page/[@size, @unit, @nodeset]
<memoryBacking>
    <hugepages>
      <page size="1" unit="G" nodeset="0-3,5"/>
      <page size="2" unit="M" nodeset="4"/>
    </hugepages>
  </memoryBacking>

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-07-29 12:02:34 +01:00
Roman Bogorodskiy
1281f4a100 schema: bhyve and nmdm updates
* docs/schemas/domaincommon.rng: Add bhyve domain type, nmdm
  serial type and master and slave optional attributes for
  serial that are used by nmdm
* tests/domainschematest: Add bhyvexml2argvdata directory
  to validate bhyve XMLs
2014-07-29 09:52:16 +04:00
Cédric Bosdonnat
47e5b5ae32 lxc: allow to keep or drop capabilities
Added <capabilities> in the <features> section of LXC domains
configuration. This section can contain elements named after the
capabilities like:

  <mknod state="on"/>, keep CAP_MKNOD capability
  <sys_chroot state="off"/> drop CAP_SYS_CHROOT capability

Users can restrict or give more capabilities than the default using
this mechanism.
2014-07-23 15:12:37 +08:00
John Ferlan
f3271f4cb3 Add unique_id to nodedev output
Add an optional unique_id parameter to nodedev.  Allows for easier lookup
and display of the unique_id value in order to document for use with
scsi_host code.
2014-07-21 12:55:11 -04:00
Osier Yang
a4bd62adc1 storage: Introduce parentaddr into virStoragePoolSourceAdapter
Between reboots and kernel reloads, the SCSI host number used for SCSI
storage pools may change requiring modification to the storage pool XML
in order to use a specific SCSI host adapter.

This patch introduces the "parentaddr" element and "unique_id" attribute
for the SCSI host adapter in order to uniquely identify the adapter
between reboots and kernel reloads. For now the goal is to only parse
and format the XML. Both will be required to be provided in order to
uniquely identify the desired SCSI host.

The new XML is expected to be as follows:

  <adapter type='scsi_host'>
    <parentaddr unique_id='3'>
      <address domain='0x0000' bus='0x00' slot='0x1f' func='0x2'/>
    </parentaddr>
  </adapter>

where "parentaddr" is the parent device of the SCSI host using the PCI
address on which the device resides and the value from the unique_id file
for the device. Both the PCI address and unique_id values will be used
to traverse the /sys/class/scsi_host/ directories looking at each link
to match the PCI address reformatted to the directory link format where
"domain🚌slot:function" is found.  Then for each matching directory
the unique_id file for the scsi_host will be used to match the unique_id
value in the xml.

For a PCI address listed above, this will be formatted to "0000:00:1f.2"
and the links in /sys/class/scsi_host will be used to find the host#
to be used for the 'scsi_host' device. Each entry is a link to the
/sys/bus/pci/devices directories, e.g.:

%  ls -al /sys/class/scsi_host/host2
lrwxrwxrwx. 1 root root 0 Jun  1 00:22 /sys/class/scsi_host/host2 -> ../../devices/pci0000:00/0000:00:1f.2/ata3/host2/scsi_host/host2

% cat /sys/class/scsi_host/host2/unique_id
3

The "parentaddr" and "name" attributes are mutually exclusive to identify
the SCSI host number. Use of the "parentaddr" element will be the preferred
mechanism.

This patch only supports to parse and format the XMLs. Later patches will
add code to find out the scsi host number.
2014-07-21 12:55:10 -04:00
Peter Krempa
b325be128a schema: pool: netfs: Don't enforce slash in glusterfs pool source
Gluster volumes don't start with a leading slash. Our schema for netfs
gluster pools enforces it though. Luckily mount.glusterfs skips it.
Allow a slashless volume name for glusterfs netfs mounts in the schema.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1101999
2014-07-21 18:28:17 +02:00
Cédric Bosdonnat
3ba0469ce6 lxc network configuration allows setting target container NIC name
LXC network devices can now be assigned a custom NIC device name on the
container side. For example, this is configured with:

    <interface type='network'>
      <source network='default'/>
      <guest dev="eth1"/>
    </interface>

In this example the network card will appear as eth1 in the guest.
2014-07-18 14:25:57 +02:00
Eric Blake
7f1ca3d6fe schema: put interleave at correct level
The previous commit 09d4d26 put the interleave at the wrong point;
it didn't allow interleaving with <memory>.

* docs/schema/domaincommon.rng (numatune): Fix interleave location.
* tests/qemuxml2argvdata/qemuxml2argv-numatune-memnode.xml: Adjust test.

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-07-16 17:30:31 -06:00
Martin Kletzander
09d4d261e5 schema: add interleave inside numatune
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-07-16 20:36:20 +02:00
Martin Kletzander
a05c01521c conf, schema: add support for memnode elements
Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-07-16 20:15:45 +02:00
Martin Kletzander
992000e6d8 conf, schema: add 'id' field for cells
In XML format, by definition, order of fields should not matter, so
order of parsing the elements doesn't affect the end result.  When
specifying guest NUMA cells, we depend only on the order of the 'cell'
elements.  With this patch all older domain XMLs are parsed as before,
but with the 'id' attribute they are parsed and formatted according to
that field.  This will be useful when we have tuning settings for
particular guest NUMA node.

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2014-07-16 20:15:45 +02:00
Michele Paolino
a14abd463a support for QEMU vhost-user
This patch adds support for the QEMU vhost-user feature to libvirt.
vhost-user enables the communication between a QEMU virtual machine
and other userspace process using the Virtio transport protocol.
It uses a char dev (e.g. Unix socket) for the control plane,
while the data plane based on shared memory.

The XML looks like:

<interface type='vhostuser'>
    <mac address='52:54:00:3b:83:1a'/>
    <source type='unix' path='/tmp/vhost.sock' mode='server'/>
    <model type='virtio'/>
</interface>

Signed-off-by: Michele Paolino <m.paolino@virtualopensystems.com>
Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-07-16 18:44:57 +02:00
Chunyan Liu
a9fd30e633 storagevol: add nocow to vol xml
Add 'nocow' to storage volume xml so that user can have an option
to set NOCOW flag to the newly created volume. It's useful on btrfs
file system to enhance performance.

Btrfs has low performance when hosting VM images, even more when the guest
in those VM are also using btrfs as file system. One way to mitigate this
bad performance is to turn off COW attributes on VM files. Generally, there
are two ways to turn off COW on btrfs: a) by mounting fs with nodatacow,
then all newly created files will be NOCOW. b) per file. Add the NOCOW file
attribute. It could only be done to empty or new files.

This patch tries the second way, according to 'nocow' option, it could set
NOCOW flag per file:
for raw file images, handle 'nocow' in libvirt code; for non-raw file images,
pass 'nocow=on' option to qemu-img, and let qemu-img to handle that (requires
qemu-img version >= 2.1).

Signed-off-by: Chunyan Liu <cyliu@suse.com>
2014-07-16 13:35:20 +02:00
Michal Privoznik
614581f32b Introduce domain_capabilities
This new module holds and formats capabilities for emulator. If you
are about to create a new domain, you may want to know what is the
host or hypervisor capable of. To make sure we don't regress on the
XML, the formatting is not something left for each driver to
implement, rather there's general format function.

The domain capabilities is a lockable object (even though the locking
is not necessary yet) which uses reference counter.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-07-03 12:22:37 +02:00
Mike Perez
d950494129 qemu: Add cmd_per_lun, max_sectors to virtio-scsi
This introduces two new attributes "cmd_per_lun" and "max_sectors" same
with the names QEMU uses for virtio-scsi. An example of the XML:

<controller type='scsi' index='0' model='virtio-scsi' cmd_per_lun='50'
max_sectors='512'/>

The corresponding QEMU command line:

-device virtio-scsi-pci,id=scsi0,cmd_per_lun=50,max_sectors=512,
bus=pci.0,addr=0x3

Signed-off-by: Mike Perez <thingee@gmail.com>
Signed-off-by: Ján Tomko <jtomko@redhat.com>
2014-07-02 09:43:17 +02:00
Laine Stump
69db5f921a interface: report link state for bonds and vlans too
The interface state for bonds and vlans does seem to reflect the state
of the underlying physical devices, at least in some cases, so it
makes sense to allow reporting it (netcf now does).

The link state/speed for bridge devices is meaningless though, so we
don't even look for it.
2014-06-20 11:43:19 +03:00
Laine Stump
a341fc731d interface: allow reordering of elements in xml
The interface xml schema was written with strict rules about the
ordering of the elements. This was never intentional, but just due to
omission of <interleave> in the appropriate places. This patch just
adds in <interleave> wherever there is more than one element, and
re-indents everything else appropriately.
2014-06-19 07:56:27 -06:00
Michal Privoznik
02129b7c0e virCaps: expose pages info
There are two places where you'll find info on page sizes. The first
one is under <cpu/> element, where all supported pages sizes are
listed. Then the second one is under each <cell/> element which refers
to concrete NUMA node. At this place, the size of page's pool is
reported. So the capabilities XML looks something like this:

<capabilities>

  <host>
    <uuid>01281cda-f352-cb11-a9db-e905fe22010c</uuid>
    <cpu>
      <arch>x86_64</arch>
      <model>Westmere</model>
      <vendor>Intel</vendor>
      <topology sockets='1' cores='1' threads='1'/>
      ...
      <pages unit='KiB' size='4'/>
      <pages unit='KiB' size='2048'/>
      <pages unit='KiB' size='1048576'/>
    </cpu>
    ...
    <topology>
      <cells num='4'>
        <cell id='0'>
          <memory unit='KiB'>4054408</memory>
          <pages unit='KiB' size='4'>1013602</pages>
          <pages unit='KiB' size='2048'>3</pages>
          <pages unit='KiB' size='1048576'>1</pages>
          <distances/>
          <cpus num='1'>
            <cpu id='0' socket_id='0' core_id='0' siblings='0'/>
          </cpus>
        </cell>
        <cell id='1'>
          <memory unit='KiB'>4071072</memory>
          <pages unit='KiB' size='4'>1017768</pages>
          <pages unit='KiB' size='2048'>3</pages>
          <pages unit='KiB' size='1048576'>1</pages>
          <distances/>
          <cpus num='1'>
            <cpu id='1' socket_id='0' core_id='0' siblings='1'/>
          </cpus>
        </cell>
        ...
      </cells>
    </topology>
    ...
  </host>

  <guest/>

</capabilities>

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-06-19 15:10:49 +02:00
Eric Blake
b50e104923 blockjob: don't remove older-style mirror XML
Commit 7c6fc39 introduced a regression in the XML produced for older
clients.  The argument at the time was that clients shouldn't be
depending on output-only data for something that is only going to
be triggered for a transient guest; but John Ferlan reported that
the automated testsuite was such a client.  It's better to be safe
than sorry by guaranteeing back-compat cruft.  Note that later
patches will be using <mirror> for active block commit, but there
we don't have to worry about back-compat.

* src/conf/domain_conf.c (virDomainDiskDefFormat): Restore old
style output when necessary.
* docs/schemas/domaincommon.rng: Validate back-compat style.
* docs/formatdomain.html.in: Update the documentation.
* tests/qemuxml2xmloutdata/qemuxml2xmlout-disk-mirror-old.xml:
Update tests.
* tests/qemuxml2argvdata/qemuxml2argv-disk-mirror.xml: Likewise.

Signed-off-by: Eric Blake <eblake@redhat.com>
2014-06-16 13:48:00 -06:00
Michal Privoznik
16ebf10f34 nodedev: Introduce <pci-express/> to PCI devices
This new element is there to represent PCI-Express capabilities
of a PCI devices, like link speed, number of lanes, etc.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-06-16 17:40:49 +02:00
Michal Privoznik
0311ef3d65 node_device: Expose link state & speed
While exposing the info under <interface/> in previous patch works, it
may work only in cases where interface is configured on the host.
However, orchestrating application may want to know the link state and
speed even in that case. That's why we ought to expose this in nodedev
XML too:

virsh # nodedev-dumpxml net_eth0_f0_de_f1_2b_1b_f3
<device>
  <name>net_eth0_f0_de_f1_2b_1b_f3</name>
  <path>/sys/devices/pci0000:00/0000:00:19.0/net/eth0</path>
  <parent>pci_0000_00_19_0</parent>
  <capability type='net'>
    <interface>eth0</interface>
    <address>f0🇩🇪f1:2b:1b:f3</address>
    <link speed='1000' state='up'/>
    <capability type='80203'/>
  </capability>
</device>

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
2014-06-11 10:59:39 +02:00