On 2/3/26 3:18 PM, Barry wrote:
On 3 Feb 2026, at 16:38, Paolo Galtieri <[email protected]> wrote:
I even tried with systemd.unified_cgroup_hierarchy=1 with the same result.
What do I need to do to resolve these failures?
I suggest you do not try to fix these things at all.
Some of the changes risk breaking systemd.
Try using virt lib manager to create a vm and test that what you need works.
This all works for me with no tuning of kernel command line.
Barry
What I find interesting is that there is a difference between F43 and
Ubuntu 24.04. Here is the boot line on Ubuntu
BOOT_IMAGE=/boot/vmlinuz-6.14.0-1020-oem
root=UUID=d86db02c-3292-4ddb-a29f-217181a50592 ro quiet splash
intel_iommu=on cgroup_enable=devices systemd.unified_cgroup_hierarchy=0
vt.handoff=7
Here is the boot line on F43
BOOT_IMAGE=(hd8,gpt2)/vmlinuz-6.18.7-200.fc43.x86_64
root=UUID=0339e593-808e-4f94-9413-8b8302a5720c ro rootflags=subvol=root
rhgb quiet intel_iommu=on cgroup_enable=devices
systemd.unified_cgroup_hierarchy=0
They are almost identical. On Ubuntu I don't see the failures. Both are
running cgroup2.
The Ubuntu system is only a few weeks old while the F43 system is
several years old. I don't know if this plays a part.
I've only recently upgraded my system to F43. Under F42 I had a lot of
problems creating a VM, mostly related to permission denied errors. I
have created a VM on Ubuntu prior to making the kernel changes so I'm
certain that these failures do not directly affect creating a VM. I'm
also waiting for the update to bug 2277235 so that I can create an F43 VM.
Paolo
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