Bug#1011518: libvirt-daemon: libvirtd does not load the KVM module automatically

[Chandra Sekar]

Package: libvirt-daemon
Version: 8.3.0-1
Severity: important
X-Debbugs-Cc: chand...@gmail.com

Dear Maintainer,

libvirtd used to load the appropriate kvm module automatically on
startup, but appears to have stopped doing so with the latest update. I
see the following lines in the output of sudo systemctl status libvirtd.

libvirtd[1122]: Unable to open /dev/kvm: No such file or directory
libvirtd[1122]: internal error: failed to query mdevs from mdevctl: Error: No such file or directory (os error 2)

I have verified that virtualization is enabled in firmware settings.
Restarting libvirtd after loading the kvm-amd module using modprobe
resolved the issue.


-- System Information:
Debian Release: bookworm/sid
APT prefers unstable
APT policy: (500, 'unstable')
Architecture: amd64 (x86_64)

Kernel: Linux 5.17.0-2-amd64 (SMP w/12 CPU threads; PREEMPT)
Locale: LANG=en_IN, LC_CTYPE=en_IN (charmap=UTF-8), LANGUAGE=en_IN:en
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libvirt-daemon depends on:
ii libblkid1 2.38-4
ii libc6 2.33-7
ii libdevmapper1.02.1 2:1.02.175-2.1
ii libgcc-s1 12.1.0-2
ii libglib2.0-0 2.72.1-1
ii libparted2 3.5-1
ii libpcap0.8 1.10.1-4
ii libpciaccess0 0.16-3
ii libselinux1 3.3-1+b2
ii libtirpc3 1.3.2-2
ii libudev1 251-2
ii libvirt-daemon-driver-qemu 8.3.0-1
ii libvirt0 8.3.0-1
ii libxml2 2.9.14+dfsg-1

Versions of packages libvirt-daemon recommends:
ii libvirt-daemon-driver-lxc 8.3.0-1
ii libvirt-daemon-driver-vbox 8.3.0-1
ii libvirt-daemon-driver-xen 8.3.0-1
ii libxml2-utils 2.9.14+dfsg-1
ii lvm2 2.03.11-2.1
ii netcat-openbsd 1.218-5
ii qemu-system-x86 [qemu-kvm] 1:7.0+dfsg-7

Versions of packages libvirt-daemon suggests:
pn libvirt-daemon-driver-storage-gluster <none>
pn libvirt-daemon-driver-storage-iscsi-direct <none>
pn libvirt-daemon-driver-storage-rbd <none>
pn libvirt-daemon-driver-storage-zfs <none>
ii libvirt-daemon-system 8.3.0-1
pn numad <none>

-- no debconf information

[Chandra Sekar Srinivasan]

The bug appears to be resolved in 8.5.0-1. The kvm_amd module is now loaded on boot without requiring additional configuration.