pci device vga added not showing
by Barry Cisna
Hello All,
Trying to get virgl working from linux host to windows guest
in virt-manager i have added the host graphics card Matrox G200ew to the
hardware settings as a pci device for Windows 10 guest.
When i go to spice server settings, and select Opengl checked there are no
available pci devices listed in the drop down box select.
Am trying to get some 3d working on Windows guest and seems from reading
this is almost impossible short of doing gpu passthrough with a second GPU
in the host.
Am probably missing something.
Thank You.
5 years, 1 month
build problem with libxl
by Christoph
Hi all
since 5.9.0 configure doesnt find the libxl libs/headers...
It works With 5.8.0, with 5.9.0 not... not even if I set --with-libxl
What can be the problem?
--
------
Greetz
5 years, 1 month
Cannot turn iommu on inside guest
by Mauricio Tavares
So I want to turn iommu support on in a guest ( <type arch='x86_64'
machine='pc-q35-4.1'>hvm</type>). Per [1] I tried to add to devices
either
<devices>
<iommu model='intel'>
<driver intremap='on'/>
</iommu>
</devices>
or just a simpler
<devices>
<iommu model='intel /'>
</devices>
However, when I try to boot it, it crashes with the following error
message (stolen from /var/log/libvirt/qemu/testkvm.log):
2020-02-11T05:13:27.278707Z qemu-system-x86_64: We need to set
caching-mode=on for intel-iommu to enable device assignment with IOMMU
protection.
2020-02-11 05:13:27.577+0000: shutting down, reason=crashed
that sounds like it wants me to do something like
qemu-system-x86_64 [...] -device intel-iommu,intremap=on,caching-mode=on[2]
using virsh. But
<devices>
<iommu model='intel'>
<driver intremap='on' caching-mode='on '/>
</iommu>
</devices>
is not only not mentioned in [1] but also fails
[root@testbox tests]# virsh edit testkvm
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
Failed. Try again? [y,n,i,f,?]:
Can anyone show me what I am missing here?
[1] https://libvirt.org/formatdomain.html#elementsIommu
[2] https://wiki.qemu.org/Features/VT-d#Command_Line_Example_2
5 years, 1 month
clustered lvm volume activation
by Timm Wunderlich
dear all,
i have a problem with clustered lvm storage and the "logical" storage
driver, perhaps someone has a suggestion.
i have a clustered lvm (lvmlockd, not clvm) with 4 hosts running.
when i start the storage on a host it activates all volumes in the whole
volume group. then i cannot start the storage on other hosts because all
volumes are already activated on one host.
if i then deactivate all volumes in the started pool i can start the
pool on other hosts. but then i have to manually activate the volume if
i want to start the domain.
it would be great if the logical pool driver would only activate the
volume of a domain at domain start and not on pool start.
does anybody have a workaround for this or any suggestions for me? do
you think i should open an issue on it?
Regards,
Timm
--
__________________________________________
Timm Wunderlich
Systemadministrator
Universität Siegen, Fakultät III
Lehrstuhl für Wirtschaftsinformatik und Neue Medien
Kohlbett Str. 15, 57068 Siegen
Tel: +49 271-740 3382
timm.wunderlich(a)uni-siegen.de
www.wineme.uni-siegen.de
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5 years, 1 month
Open Source Hackathon Mentorship Invitation
by Misha Patel
Hello,
My name is Misha Patel and I’m reaching out on behalf of the HackIllinois
Outreach team. HackIllinois is a 36-hour collegiate Open Source hackathon
that takes place annually at the University of Illinois Urbana-Champaign.
This year, it will be from February 28th-March 1st, 2020. Our mission is to
introduce college students to Open Source, while giving back to the
community. We strive to create a collaborative environment in which our
attendees can learn from and work with developers to make their own
contributions. In past years, we’ve had developers from prominent projects
such as npm, Rust, and Apache come to mentor students from our pool of 900+
attendees.
We’d love it if you could pass along this message to the Libvirt community
or any individuals you believe would be interested. We will provide meals
throughout the event and can reimburse for travel and lodging up to a
certain amount depending on where in the US people are coming from. More
information on mentorship can be found at hackillinois.org/mentor. You can
also visit opensource.hackillinois.org to see what kinds of projects were
represented at our event last year.
We'd be more than happy to discuss this further. Please have any interested
individuals contact us at opensource(a)hackillinois.org. Looking forward to
hearing back!
Best,
Misha Patel
HackIllinois 2020 Outreach Director
misha.patel(a)hackillinois.org
5 years, 1 month
can hotplug vcpus to running Windows 10 guest, but not unplug
by Lentes, Bernd
Hi,
i'm playing a bit around with vcpus.
My guest is Windows 10 1903.
This is the excerpt from the config:
...
<vcpu placement='static' current='2'>4</vcpu>
<vcpus>
<vcpu id='0' enabled='yes' hotpluggable='no'/>
<vcpu id='1' enabled='yes' hotpluggable='yes'/>
<vcpu id='2' enabled='no' hotpluggable='yes'/>
<vcpu id='3' enabled='no' hotpluggable='yes'/>
</vcpus>
...
I'm able to hotplug vcpus, but when i want to unplug them i get the following:
virsh # setvcpus pathway 3 --live
virsh # setvcpus pathway 4 --live
virsh # setvcpus pathway 2 --live
error: internal error: unable to execute QEMU command 'device_del': acpi: device unplug request for not supported device type: qemu64-x86_64-cpu
Does anyone know why it can't be unplugged ?
Thanks.
Brtnf
--
Bernd Lentes
Systemadministration
Institute for Metabolism and Cell Death (MCD)
Building 35.34 - Raum 208
HelmholtzZentrum münchen
bernd.lentes(a)helmholtz-muenchen.de
phone: +49 89 3187 1241
phone: +49 89 3187 3827
fax: +49 89 3187 2294
http://www.helmholtz-muenchen.de/mcd
Perfekt ist wer keine Fehler macht
Also sind Tote perfekt
Helmholtz Zentrum München
Helmholtz Zentrum Muenchen
Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
Ingolstaedter Landstr. 1
85764 Neuherberg
www.helmholtz-muenchen.de
Aufsichtsratsvorsitzende: MinDir.in Prof. Dr. Veronika von Messling
Geschaeftsfuehrung: Prof. Dr. med. Dr. h.c. Matthias Tschoep, Kerstin Guenther
Registergericht: Amtsgericht Muenchen HRB 6466
USt-IdNr: DE 129521671
5 years, 1 month
Possible to use OVN networking and virtio simultaneously in the same VM?
by Andre Goree
I wanted to know if it's possible to use OVN networking and virtio simultaneously in the same VM? Or am I wasting my time trying to get it to work?
When I try to define a VM and power it on with both types defined, networking fails to work on both. E.g.:
<interface type='bridge'>
<mac address='xx:xx:xx:xx:xx:xx'/>
<source bridge='foo'/>
<virtualport type='openvswitch'>
</virtualport>
<target dev='devfoo'/>
</interface>
<interface type='bridge'>
<mac address='xx:xx:xx:xx:xx:xx'/>
<source bridge='bar'/>
<virtualport type='openvswitch'>
</virtualport>
<target dev='devbar'/>
</interface>
<interface type='bridge'>
<mac address='xx:xx:xx:xx:xx:xx/>
<source bridge='foo2'/>
<model type='virtio'/>
<target dev='devfoo2/>
</interface>
Notice the 'virtio' setting on the third NIC. If I remove that NIC from the xml or if set that NIC as a virtualport on openvswitch like the other two NICs, networking works fine.
Am I missing something? Or is this a silly question to even ask?
5 years, 1 month
PCI/GPU Passthrough with xen
by Christoph
Hi All,
it is possible to use pci/gpu passthrough with xen and libvirt?
If yes, how is the syntax? Can I get an example?
--
------
Greetz
5 years, 1 month
ERROR Could not find an installable distribution at ....
by Kaushal Shriyan
Hi,
I am trying to set up alpine Linux Guest OS using the below command
#virt-install --name=mfecdrupalalphine
--file=/linuxkvmguestosdisk/var/lib/libvirt/images/mfecdrupalalphine.img
--file-size=100 --nonsparse --vcpus=2 --ram=6096 --network=bridge:br0
--os-type=linux --os-variant=alpinelinux3.8 --graphics none
--location=/linuxkvmguestosdisk/var/lib/libvirt/isos/alpine-standard-3.11.3-x86_64.iso
--extra-args="console=ttyS0"
Starting install...
Retrieving file .treeinfo...
| 0 B 00:00:00
Retrieving file content...
| 0 B 00:00:00
ERROR Could not find an installable distribution at
'/linuxkvmguestosdisk/var/lib/libvirt/isos/alpine-standard-3.11.3-x86_64.iso':
The URL could not be accessed, maybe you mistyped?
The location must be the root directory of an install tree.
See virt-install man page for various distro examples.
Domain installation does not appear to have been successful.
If it was, you can restart your domain by running:
virsh --connect qemu:///system start mfecdrupalalphine
otherwise, please restart your installation.
The iso file do exist as per the below details
ls -l
/linuxkvmguestosdisk/var/lib/libvirt/isos/alpine-standard-3.11.3-x86_64.iso
-rw-r--r-- 1 root root 127926272 Feb 12 17:49
/linuxkvmguestosdisk/var/lib/libvirt/isos/alpine-standard-3.11.3-x86_64.iso
#
Any clue? I look forward to hearing from you and thanks in advance.
Best Regards,
Kaushal
5 years, 1 month
problems with understanding of the memory parameters in the xml file
by Lentes, Bernd
Hi guys,
despite reading hours and hours in the internet i'm still struggling with
"memory", "currentmemory" and "maxMemory".
Maybe you can help me to sort it out.
My idea is that a guest has an initial value of memory (which "memory" seems to be) when booting.
We have some Windows 10 guests which calculate some stuff and i would like to increase memory during runtime
until it reaches a fixed maximum value.
My hope was that a higher "maxMemory" could solve this, that the guest claims more memory and gets it.
I didn't get it. Is my idea wrong ? Do i need a balloon driver for that ?
What i find concerning ballooning is that it doesn't work automatically but has to be adjusted
manually. Is that right ?
Balloon drivers for windows are available.
Is my idea right, does that work basically ? If yes how do i have to set the parameters ?
Is the memory released after the guest has e.g. finished his calculation ?
Does that work automatically or do i have to adjust that manually ?
Thanks.
Bernd
--
Bernd Lentes
Systemadministration
Institute for Metabolism and Cell Death (MCD)
Building 35.34 - Raum 208
HelmholtzZentrum münchen
bernd.lentes(a)helmholtz-muenchen.de
phone: +49 89 3187 1241
phone: +49 89 3187 3827
fax: +49 89 3187 2294
http://www.helmholtz-muenchen.de/mcd
Perfekt ist wer keine Fehler macht
Also sind Tote perfekt
Helmholtz Zentrum München
Helmholtz Zentrum Muenchen
Deutsches Forschungszentrum fuer Gesundheit und Umwelt (GmbH)
Ingolstaedter Landstr. 1
85764 Neuherberg
www.helmholtz-muenchen.de
Aufsichtsratsvorsitzende: MinDir.in Prof. Dr. Veronika von Messling
Geschaeftsfuehrung: Prof. Dr. med. Dr. h.c. Matthias Tschoep, Kerstin Guenther
Registergericht: Amtsgericht Muenchen HRB 6466
USt-IdNr: DE 129521671
5 years, 1 month
