Unprivileged Users Lack cgroup Devices Controller Access for libvirt/LXC on Arch
A Linux user configuring libvirt/QEMU/KVM for unprivileged (non-root) access hits a virt-host-validate failure because the cgroup 'devices' controller isn't available to non-root users. The workaround of running as root defeats the goal of rootless virtualization. This is a recurring friction point in configuring rootless container/VM tooling on cgroup v2 distros.
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