live migrate storage to different volume on the same host
by Jing-Wei Su
Hello experts,
I would like to move the qcow2 disk images of a running VM to a
different storage because of the maintenance of the underlying storage
on the same host.
I found the live migration is not allowable on the same host using
virsh. Is there any suggestion or better practices for this?
Thank you,
Derek
3 years, 3 months
libvirt 7.2.0 domainbackup
by Thomas Stein
Hello one and all.
Just wanted to check out the new feature domainbackup but having trouble
to configure it. I thought I just have to put
<domainbackup>
<disks>
<disk name='vda' type='file'>
<target file='/var/lib/libvirt/jitsi'/>
<driver type='raw'/>
</disk>
</disks>
</domainbackup>
at the top level of my domain xml file but that does not seem to work. I
get:
error: XML document failed to validate against schema: Unable to
validate doc against /usr/share/libvirt/schemas/domain.rng
Element domain has extra content: domainbackup
Can someone please push me in the right direction?
cheers, t.
3 years, 3 months
submitting a patch to fix documentation errors
by Tom Ammon
Hello,
While using the libvirt application development guide for python (
https://libvirt.org/docs/libvirt-appdev-guide-python/en-US/html/index.html)
I found a couple of errors in the example code that I'd like to fix. I've
created a branch and committed the fixes locally, and I'm ready to push
them. I plan to use git send-email to submit the patch. Which list should I
use in the --to= ? Should it be libvirt-users(a)redhat.com?
This is my first contribution to this project. I've read the best practices
and contributing guidelines on libvirt.org, but if I make mistakes in the
workflow I'd appreciate your help to correct them.
Thanks!
Tom
--
-----------------------------------------------------------------------------
Tom Ammon
M: (737) 400-9042
thomasammon(a)gmail.com
-----------------------------------------------------------------------------
3 years, 3 months
Creating Virtual machine with .OVF format
by Ajay Kumar
Hello members,
I would like to create virtual machine images with some pre-installed
software in a .*OVF/OVA* format. So that I can use these* OVF *images/templates
for any hypervisor to create a VM.
Do you have any suggestions or some available web scripts/links to do
this..?
Thanks,
Ajay
3 years, 3 months
XML for working mips64el guest
by Skyler Mäntysaari
Hi there,
How do I get a working xml for mips64el guest when using virt-manager?
The host system is running Ubuntu, but I believe that this is the right
list for things relating to libvirt.
It errors with:
---------------------------------------------
Unable to complete install: 'this function is not supported by the
connection driver: 'mips64el' architecture is not supported by CPU driver'
Traceback (most recent call last):
File "/usr/share/virt-manager/virtManager/asyncjob.py", line 75, in
cb_wrapper
callback(asyncjob, *args, **kwargs)
File "/usr/share/virt-manager/virtManager/createvm.py", line 2089, in
_do_async_install
guest.installer_instance.start_install(guest, meter=meter)
File "/usr/share/virt-manager/virtinst/install/installer.py", line
542, in start_install
domain = self._create_guest(
File "/usr/share/virt-manager/virtinst/install/installer.py", line
491, in _create_guest
domain = self.conn.createXML(install_xml or final_xml, 0)
File "/usr/lib/python3/dist-packages/libvirt.py", line 4034, in createXML
if ret is None:raise libvirtError('virDomainCreateXML() failed',
conn=self)
libvirt.libvirtError: this function is not supported by the connection
driver: 'mips64el' architecture is not supported by CPU driver
---------------------------------------------
This is what I'm trying to use:
---------------------------------------------
<domain type="qemu">
<name>debian9-mips64el</name>
<metadata>
<libosinfo:libosinfo
xmlns:libosinfo="http://libosinfo.org/xmlns/libvirt/domain/1.0">
<libosinfo:os id="http://debian.org/debian/9"/>
</libosinfo:libosinfo>
</metadata>
<memory>1048576</memory>
<currentMemory>1048576</currentMemory>
<vcpu>2</vcpu>
<os>
<type arch="mips64el" machine="malta">hvm</type>
<cmdline>nokaslr root=/dev/sda1 console=ttyS0</cmdline>
<boot dev="hd"/>
</os>
<clock offset="utc"/>
<devices>
<emulator>/usr/bin/qemu-system-mips64el</emulator>
<controller type="pci" index="0" model="pci-root"/>
<disk type="file" device="disk">
<driver name="qemu" type="qcow2"/>
<source file="/var/lib/libvirt/images/mip64el/stretch/disk.qcow2"/>
<target dev="hda" bus="ide"/>
</disk>
<interface type="network">
<source network="default"/>
<mac address="52:54:00:c5:63:f5"/>
</interface>
<console type="pty"/>
</devices>
</domain>
---------------------------------------------------------------------------------------------------------------
3 years, 3 months
Re: Regarding location of Libvirt library
by Andrea Bolognani
[once again, please keep replies on-list]
On Wed, 2021-04-07 at 10:46 +0530, shafnamol N wrote:
> > What does running
> >
> > $ ls /usr/lib/systemd/system/*virt*
> >
> > output?
>
> The output is as shown below:
>
> # ls /usr/lib/systemd/system/*virt*
> /usr/lib/systemd/system/libvirtd-admin.socket /usr/lib/systemd/system/virtnodedevd.service
> /usr/lib/systemd/system/libvirtd-ro.socket /usr/lib/systemd/system/virtnodedevd.socket
> /usr/lib/systemd/system/libvirtd.service /usr/lib/systemd/system/virtnwfilterd-admin.socket
> /usr/lib/systemd/system/libvirtd.service_backup /usr/lib/systemd/system/virtnwfilterd-ro.socket
> /usr/lib/systemd/system/libvirtd.socket /usr/lib/systemd/system/virtnwfilterd.service
> /usr/lib/systemd/system/libvirtd-tcp.socket /usr/lib/systemd/system/virtnwfilterd.socket
> /usr/lib/systemd/system/libvirtd-tls.socket /usr/lib/systemd/system/virtproxyd-admin.socket
> /usr/lib/systemd/system/libvirt-guests.service /usr/lib/systemd/system/virtproxyd-ro.socket
> /usr/lib/systemd/system/virt-guest-shutdown.target /usr/lib/systemd/system/virtproxyd.service
> /usr/lib/systemd/system/virtinterfaced-admin.socket /usr/lib/systemd/system/virtproxyd.socket
> /usr/lib/systemd/system/virtinterfaced-ro.socket /usr/lib/systemd/system/virtproxyd-tcp.socket
> /usr/lib/systemd/system/virtinterfaced.service /usr/lib/systemd/system/virtproxyd-tls.socket
> /usr/lib/systemd/system/virtinterfaced.socket /usr/lib/systemd/system/virtqemud-admin.socket
> /usr/lib/systemd/system/virtlockd-admin.socket /usr/lib/systemd/system/virtqemud-ro.socket
> /usr/lib/systemd/system/virtlockd.service /usr/lib/systemd/system/virtqemud.service
> /usr/lib/systemd/system/virtlockd.socket /usr/lib/systemd/system/virtqemud.socket
> /usr/lib/systemd/system/virtlogd-admin.socket /usr/lib/systemd/system/virtsecretd-admin.socket
> /usr/lib/systemd/system/virtlogd.service /usr/lib/systemd/system/virtsecretd-ro.socket
> /usr/lib/systemd/system/virtlogd.socket /usr/lib/systemd/system/virtsecretd.service
> /usr/lib/systemd/system/virtlxcd-admin.socket /usr/lib/systemd/system/virtsecretd.socket
> /usr/lib/systemd/system/virtlxcd-ro.socket /usr/lib/systemd/system/virtstoraged-admin.socket
> /usr/lib/systemd/system/virtlxcd.service /usr/lib/systemd/system/virtstoraged-ro.socket
> /usr/lib/systemd/system/virtlxcd.socket /usr/lib/systemd/system/virtstoraged.service
> /usr/lib/systemd/system/virtnetworkd-admin.socket /usr/lib/systemd/system/virtstoraged.socket
> /usr/lib/systemd/system/virtnetworkd-ro.socket /usr/lib/systemd/system/virtvboxd-admin.socket
> /usr/lib/systemd/system/virtnetworkd.service /usr/lib/systemd/system/virtvboxd-ro.socket
> /usr/lib/systemd/system/virtnetworkd.socket /usr/lib/systemd/system/virtvboxd.service
> /usr/lib/systemd/system/virtnodedevd-admin.socket /usr/lib/systemd/system/virtvboxd.socket
> /usr/lib/systemd/system/virtnodedevd-ro.socket
libvirtd.service_backup should not be there, but I don't think that's
what causing your problem. I would still recommend deleting it just
in case.
> > What OS are you using?
>
> Centos 8
>
> > What does the
> >
> > Miscellaneous
> > ...
> > Init script: XXX
> >
> > entry look like in the summary that's displayed when you run Meson?
>
> Miscellaneous
> Init script : systemd
These all look good, so I really have no idea what's going on.
Hopefully someone else on the list will be able to help you!
Good luck :)
--
Andrea Bolognani / Red Hat / Virtualization
3 years, 3 months
Xen: libvirt.libvirtError: An error occurred, but the cause is unknown
by Mathieu Tarral
Hi,
I'm facing a strange issue with libvirt and the Xen driver.
Whenever I try to define or start a domain, I always get this error:
"libvirt.libvirtError: An error occurred, but the cause is unknown" (in Python virt-manager interface)
Which is not very helpful.
Trying to use virsh directly leads to the same error message:
virsh # start win10_xen
error: Failed to start domain win10_xen
error: An error occurred, but the cause is unknown
I checked /var/log/libvirt/libxl/libxl-driver.log, but the log file is empty.
However, using the xl toolstack directly to start a new domain works fine,
so the issue doesn't seem to come from Xen.
My environment:
- Ubuntu 20.04 LTS
- xen-hypervisor-4.11-amd64 (4.11.3+24-g14b62ab3e5-1ubuntu2)
- libvirt0 (6.0.0-0ubuntu8.8)
I really like libvirt and virt-manager to manage my VMs.
Any clue how I could dig deeper and find the root cause ?
Thanks.
3 years, 3 months
Live migration with change to setmaxmem
by Dariusz Smigiel
Hi Team,
I need to migrate beefy instance between two different hosts which is
running out of resources.
I was wondering, if there is a way to change maximum memory value during
live migration, without shutting down the instance.
Thanks,
Dariusz
3 years, 3 months
Re: Regarding location of Libvirt library
by Andrea Bolognani
[please keep replies on-list]
On Mon, 2021-04-05 at 12:03 +0530, shafnamol N wrote:
> Hi,
> I have build libvirt in the following method:
> $ meson build -Dsystem=true
> $ ninja -C build
> When i tried to get the information via
>
> $pkg-config --cflags --libs libvirt
>
> it doesnt show anything.
>
> But I tried
> $ninja -C build install
>
> and then
> $pkg-config --cflags --libs libvirt
> It shows like:
> libvirt-7.1.0]# pkg-config --cflags --libs libvirt
> -lvirt
This is expected: pkg-config can't find the libvirt.pc file until
you've installed it :)
> But the problem is when i tried to get the status of libvirt
>
> # systemctl status libvirtd
> ● libvirtd.service
> Loaded: not-found (Reason: Unit libvirtd.service not found.)
> Active: failed (Result: exit-code)
>
> I tried with
> # systemctl daemon-reload
> But the problem persists..
> what will be the problem...
What does running
$ ls /usr/lib/systemd/system/*virt*
output?
What does the
Miscellaneous
...
Init script: XXX
entry look like in the summary that's displayed when you run Meson?
What OS are you using?
--
Andrea Bolognani / Red Hat / Virtualization
3 years, 3 months
Virtual Network API for QEMU
by Radek Simko
Hi,
According to this support matrix
https://libvirt.org/hvsupport.html#virNetworkDriver
there is no support for any APIs other than hypervisor ones for qemu.
For example virConnectNumOfNetworks is not supported.
Is there any particular reason this is not supported? Has any development
in that area been attempted in the past? Would contributions adding support
be welcomed?
Thanks,
Radek Simko
3 years, 3 months
