On 2/3/26 3:59 PM, Paolo Galtieri wrote:
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.
Those failures are irrelevant unless you're going to be using LXC for
some reason. That's not for normal VMs.
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.
That is also irrelevant. Just pick any other Fedora entry.
You are making this way harder than it needs to be. It will work OOTB
as long as you have enabled virtualization in the BIOS. What you are
doing is risking breaking other things.
--
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