I had this error today.
It was on a 20.04 development test server, upon which I was trying to start a
freshly installed 20.04 server guest.
The error occurred because I had this on my grub command line:
cgroup_no_v1=all
Once I removed it, the VM started fine.
Note that I do not use virt-manager,
Hello Simon,
The fix for the current release can be made, but, in order for that to
happen, we need an exact way how to make the error to happen, and what
was your use case. Reading Debian bug and this bug, it appears that
you've enabled cgroupv2, correct ?
You likely enabled:
systemd.unified_cg
You can not fix this error in the current release?
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Title:
libvirt error Invalid value '+cpu' for 'cgroup.subtree_control'
To manage notificatio
** Changed in: libvirt (Debian)
Status: Unknown => Fix Released
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Title:
libvirt error Invalid value '+cpu' for 'cgroup.subtree_control'
T
I constantly use virtual machines. And this bug appeared after a regular
update, about 3 weeks ago.
I think this happened after the update libvirt on 5.0.0-1ubuntu2.4 or
5.0.0-1ubuntu2.5
On my PC
~ $ sudo apt-cache policy libvirt-daemon
libvirt-daemon:
Installed: 5.0.0-1ubuntu2.5
Candidate: 5
Yep that Debian bug confirms my assumption cgroupv2 only works well with
the newer libvirt >5.5.
Could you outline how you got to a case that is affected by this so that
we can try backporting fixes (not the full cgroupv2 feature, just if
there is something that easily makes this skipping the bad
files
** Attachment added: "dump.xml"
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1845562/+attachment/5291709/+files/dump.xml
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Titl
** Attachment added: "dmesg.txt"
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1845562/+attachment/5291712/+files/dmesg.txt
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** Attachment added: "installed.txt"
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1845562/+attachment/5291710/+files/installed.txt
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T
Hi
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931243
>Found in versions libvirt/5.0.0-4, libvirt/5.2.0-2
>Fixed in version libvirt/5.6.0-1
** Bug watch added: Debian Bug tracker #931243
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=931243
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Hi,
on my end I rechecked and can start a guest with virt-manager just fine.
So we would need to find what is different on your configuration.
Usual good data is:
1. the guest XML representation (virsh dumpxml ...)
2. a list of installed packages (apport would have provided that, but it seems
you
Thank you for taking the time to report this bug and helping to make
Ubuntu better.
Since it seems likely to me that this is a local configuration problem,
rather than a bug in Ubuntu, I'm marking this bug as Incomplete.
If indeed this is a local configuration problem, you can find pointers
to ge
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