Laine,
Thank you for your response.
I did use the numa element instead of using qemu commandline and that
worked:
16 <cpu mode='custom' match='exact'>
...
34 <numa>
35 <cell id='0' cpus='0-1' memory='1048576'
unit='KiB'/>
36 <cell id='1' cpus='2-3' memory='1048576'
unit='KiB'/>
37 </numa>
38 </cpu>
However, whenever I try to use the pci-expander-bus I get:
error: XML document failed to validate against schema: Unable to validate
doc against /usr/share/libvirt/schemas/domain.rng
Extra element devices in interleave
Element domain failed to validate content
I tried the following
93 <controller type='pci' index='1'
model='pci-expander-bus'>
94 <address type='pci' domain='0x0000'
bus='0x00' slot='0x0b'
function='0x0'/>
95 </controller>
and
93 <controller type='pci' index='1'
model='pci-expander-bus'>
94 <target busNr='254'>
95 <node>1</node>
96 </target>
97 <address type='pci' domain='0x0000'
bus='0x00' slot='0x0b'
function='0x0'/>
98 </controller>
I got the syntax from:
https://www.redhat.com/archives/libvir-list/2016-March/msg01224.html
Just to give you a bit more info. This is running on:
Linux ashehata-DellPE 3.19.0-51-generic #58-Ubuntu SMP Fri Feb 26 21:22:26
UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
below is a dump of the working XML file I'm using
thanks
amir
<domain type='kvm'
xmlns:qemu='http://libvirt.org/schemas/domain/qemu/1.0'>
<name>MR_test01</name>
<uuid>59eafc3c-9d9e-4dab-bac9-48003048c6dc</uuid>
<memory unit='KiB'>2097152</memory>
<currentMemory unit='KiB'>2097152</currentMemory>
<vcpu placement='static'>4</vcpu>
<os>
<type arch='x86_64'
machine='pc-i440fx-utopic'>hvm</type>
<boot dev='hd'/>
</os>
<features>
<acpi/>
<apic/>
<pae/>
</features>
<cpu mode='custom' match='exact'>
<model fallback='allow'>core2duo</model>
<vendor>Intel</vendor>
<feature policy='require' name='pbe'/>
<feature policy='require' name='tm2'/>
<feature policy='require' name='ds'/>
<feature policy='require' name='ss'/>
<feature policy='require' name='dtes64'/>
<feature policy='require' name='ht'/>
<feature policy='require' name='dca'/>
<feature policy='require' name='lahf_lm'/>
<feature policy='require' name='tm'/>
<feature policy='require' name='cx16'/>
<feature policy='require' name='vmx'/>
<feature policy='require' name='ds_cpl'/>
<feature policy='require' name='pdcm'/>
<feature policy='require' name='xtpr'/>
<feature policy='require' name='acpi'/>
<numa>
<cell id='0' cpus='0-1' memory='1048576'
unit='KiB'/>
<cell id='1' cpus='2-3' memory='1048576'
unit='KiB'/>
</numa>
</cpu>
<clock offset='utc'>
<timer name='rtc' tickpolicy='catchup'/>
<timer name='pit' tickpolicy='delay'/>
<timer name='hpet' present='no'/>
</clock>
<on_poweroff>destroy</on_poweroff>
<on_reboot>restart</on_reboot>
<on_crash>restart</on_crash>
<pm>
<suspend-to-mem enabled='no'/>
<suspend-to-disk enabled='no'/>
</pm>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source
file='/media/ashehata/Lustre03/kvm-linux2/disk1.qcow2'/>
<target dev='vda' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x09'
function='0x0'/>
</disk>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source
file='/media/ashehata/Lustre03/kvm-linux2/disk4.qcow2'/>
<target dev='vdb' bus='virtio'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x0b'
function='0x0'/>
</disk>
<disk type='block' device='cdrom'>
<driver name='qemu' type='raw'/>
<target dev='hda' bus='ide'/>
<readonly/>
<address type='drive' controller='0' bus='0'
target='0' unit='0'/>
</disk>
<controller type='usb' index='0'
model='ich9-ehci1'>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x08'
function='0x7'/>
</controller>
<controller type='usb' index='0'
model='ich9-uhci1'>
<master startport='0'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x08'
function='0x0' multifunction='on'/>
</controller>
<controller type='usb' index='0'
model='ich9-uhci2'>
<master startport='2'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x08'
function='0x1'/>
</controller>
<controller type='usb' index='0'
model='ich9-uhci3'>
<master startport='4'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x08'
function='0x2'/>
</controller>
<controller type='pci' index='0'
model='pci-root'/>
<controller type='ide' index='0'>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x01'
function='0x1'/>
</controller>
<controller type='virtio-serial' index='0'>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x07'
function='0x0'/>
</controller>
<interface type='network'>
<mac address='52:54:00:da:1b:af'/>
<source network='default'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x03'
function='0x0'/>
</interface>
<interface type='network'>
<mac address='52:54:00:84:0a:66'/>
<source network='default'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x04'
function='0x0'/>
</interface>
<interface type='network'>
<mac address='52:54:00:17:9d:cd'/>
<source network='default'/>
<model type='virtio'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x05'
function='0x0'/>
</interface>
<serial type='pty'>
<target port='0'/>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
<channel type='spicevmc'>
<target type='virtio' name='com.redhat.spice.0'/>
<address type='virtio-serial' controller='0'
bus='0' port='1'/>
</channel>
<input type='tablet' bus='usb'/>
<input type='mouse' bus='ps2'/>
<input type='keyboard' bus='ps2'/>
<graphics type='spice' autoport='yes'/>
<sound model='ich6'>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x06'
function='0x0'/>
</sound>
<video>
<model type='qxl' ram='65536' vram='65536'
vgamem='16384' heads='1'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x02'
function='0x0'/>
</video>
<redirdev bus='usb' type='spicevmc'>
</redirdev>
<redirdev bus='usb' type='spicevmc'>
</redirdev>
<redirdev bus='usb' type='spicevmc'>
</redirdev>
<redirdev bus='usb' type='spicevmc'>
</redirdev>
<memballoon model='virtio'>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x0a'
function='0x0'/>
</memballoon>
</devices>
<qemu:commandline>
<qemu:arg value='-gdb'/>
<qemu:arg value='tcp::1201'/>
</qemu:commandline>
</domain>
On 21 November 2016 at 11:40, Laine Stump <laine@laine.org> wrote:
> On 11/21/2016 12:34 PM, Amir Shehata wrote:
>
>> Hello,
>>
>> Hope all is well.
>>
>> I've been looking at how I can create a virtual machine which is
NUMA
>> capable. I was able to do that by:
>>
>> 140 <qemu:commandline>
>> 143 <qemu:arg value='-numa'/>
>> 144 <qemu:arg value='node'/>
>> 145 <qemu:arg value='-numa'/>
>> 146 <qemu:arg value='node'/>
>> 147 </qemu:commandline>
>>
>
> qemu commandline passthrough should only be used for qemu features that
> libvirt doesn't support directly (and even then it's only intended
as a
> temporary stopgap until the feature gains official libvirt support). NUMA
> has been supported by libvirt for quite a long time.
>
> If you open http://www.libvirt.org/formatdomain.html and search for
> "numa" you'll find descriptions of the configuration for
defining NUMA
> memory regions, and assigning particular CPUs to particular nodes. The is
> also a small bit about defining a pci-expander-bus (a type of pci
> controller) and tying it to a particular NUMA node - this is how you can
> place a guest device on a particular NUMA node; just assign the device a
> PCI address that has the given pci-expander-bus' "index" as
its "bus"
> attribute.
>
>
>> This creates two NUMA nodes.
>>
>> Now I would like to assign my virtual network interfaces, of which I
have
>> three, to the different NUMA nodes on the VM.
>>
>> Anyone know how I can do that? Any help/pointers would be much
>> appreciated.
>>
>> I'm trying to create a VM that will enable me to test a NUMA based
>> feature.
>>
>
> The one thing I'm unclear about is whether the guest can be setup with
> NUMA nodes when the host itself doesn't have multiple NUMA nodes...
>
>
On 11/21/2016 04:48 PM, Amir Shehata wrote:> Laine, > > Thank you for your response. > > I did use the numa element instead of using qemu commandline and that > worked: > > 16 <cpu mode='custom' match='exact'> > ... > 34 <numa> > 35 <cell id='0' cpus='0-1' memory='1048576' unit='KiB'/> > 36 <cell id='1' cpus='2-3' memory='1048576' unit='KiB'/> > 37 </numa> > 38 </cpu> > > However, whenever I try to use the pci-expander-bus I get: > error: XML document failed to validate against schema: Unable to > validate doc against /usr/share/libvirt/schemas/domain.rng > Extra element devices in interleave > Element domain failed to validate contentSorry, I forgot to mention that pci-expander-bus is a fairly recent addition to libvirt and qemu. For libvirt support of that controller, you'll need at least libvirt 1.3.4, and qemu 2.4.0. Anything earlier than that and the guest OS won't have any visibility to the NUMA node of specific devices.> > I tried the following > > 93 <controller type='pci' index='1' model='pci-expander-bus'> > 94 <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' > function='0x0'/> > 95 </controller> > > and > > 93 <controller type='pci' index='1' model='pci-expander-bus'> > 94 <target busNr='254'> > 95 <node>1</node> > 96 </target> > 97 <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' > function='0x0'/> > 98 </controller> > > > I got the syntax from: > https://www.redhat.com/archives/libvir-list/2016-March/msg01224.html > > Just to give you a bit more info. This is running on: > Linux ashehata-DellPE 3.19.0-51-generic #58-Ubuntu SMP Fri Feb 26 > 21:22:26 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux> > below is a dump of the working XML file I'm usingI notice you don't have any device with pci bus='1'. I'm assuming you just hadn't gotten to that part of the experiment yet, correct?
Laine, Thanks. You're correct that I haven't gotten to use the new pci bus yet. I'm currently trying to upgrade to the versions you specified. Just having a bunch of problems... I'll let you know the results of the experiment once I sort them out. thanks amir On 21 November 2016 at 14:06, Laine Stump <laine@laine.org> wrote:> On 11/21/2016 04:48 PM, Amir Shehata wrote: > >> Laine, >> >> Thank you for your response. >> >> I did use the numa element instead of using qemu commandline and that >> worked: >> >> 16 <cpu mode='custom' match='exact'> >> ... >> 34 <numa> >> 35 <cell id='0' cpus='0-1' memory='1048576' unit='KiB'/> >> 36 <cell id='1' cpus='2-3' memory='1048576' unit='KiB'/> >> 37 </numa> >> 38 </cpu> >> >> However, whenever I try to use the pci-expander-bus I get: >> error: XML document failed to validate against schema: Unable to validate >> doc against /usr/share/libvirt/schemas/domain.rng >> Extra element devices in interleave >> Element domain failed to validate content >> > > Sorry, I forgot to mention that pci-expander-bus is a fairly recent > addition to libvirt and qemu. For libvirt support of that controller, > you'll need at least libvirt 1.3.4, and qemu 2.4.0. Anything earlier than > that and the guest OS won't have any visibility to the NUMA node of > specific devices. > > > >> I tried the following >> >> 93 <controller type='pci' index='1' model='pci-expander-bus'> >> 94 <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' >> function='0x0'/> >> 95 </controller> >> >> and >> >> 93 <controller type='pci' index='1' model='pci-expander-bus'> >> 94 <target busNr='254'> >> 95 <node>1</node> >> 96 </target> >> 97 <address type='pci' domain='0x0000' bus='0x00' slot='0x0b' >> function='0x0'/> >> 98 </controller> >> >> >> I got the syntax from: https://www.redhat.com/archive >> s/libvir-list/2016-March/msg01224.html >> >> Just to give you a bit more info. This is running on: >> Linux ashehata-DellPE 3.19.0-51-generic #58-Ubuntu SMP Fri Feb 26 >> 21:22:26 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux >> > > >> below is a dump of the working XML file I'm using >> > > I notice you don't have any device with pci bus='1'. I'm assuming you just > hadn't gotten to that part of the experiment yet, correct? > > >