Journalctl -u libvirtd

• journalctl -r -u libvirtd | grep -i error
• journalctl -f -u libvirtd | grep -i error

/var/log/libvirt/qemu/

Configuration

/etc/libvirt/libvirtd.conf
#log_level = 3
#log_outputs="3:syslog:libvirtd"

Logs

Error

Jun 02 10:18:44 SERVER libvirtd[14155]: 2020-07-02 06:18:44.477+0000: 14157: error : virStorageFileReportBrokenChain:431 : Cannot access storage file '/path/to/file.qcow2' (as uid:64055, gid:116): No such file or directory

Oct 20 00:12:58 SERVER libvirtd[2287]: 2020-10-21 20:12:58.730+0000: 2341: error : virDomainSnapshotDefAssignExternalNames:484 : unsupported configuration: source for disk 'hda' is not a regular file; refusing to generate external snapshot name

Sep 29 12:18:58 SERVER libvirtd[3493964]: Failed to open file '/sys/class/net/veth764c6e0/operstate': No such file or directory

libvirtd[14189]: 2019-11-21 15:08:13.035+0000: 14192: error : qemuDomainBlockCommit:17568 : invalid argument: top '/path/to/file/VM_NAME.qcow2' in chain for 'hda' has no backing file

Jul 01 20:29:54 XXXX libvirtd[2243]: 2020-07-01 16:29:54.441+0000: 3788: error : qemuDomainObjBeginJobInternal:4945 : Timed out during operation: cannot acquire state change lock (held by remoteDispatchDomainBlockJobAbort)

libvirtd[14155]: 2020-07-21 07:20:59.032+0000: 14155: error : qemuMonitorIO:719 : internal error: End of file from qemu monitor

Sep 15 19:28:32 XXX libvirtd[2287]: 2020-09-15 15:28:32.969+0000: 2342: error : qemuMonitorJSONCheckError:392 : internal error: unable to execute QEMU command 'transaction': Could not write qcow2 header: No space left on device

Warning

Aug 09 10:45:23 XXX libvirtd[14155]: 2020-08-09 06:45:23.902+0000: 14160: warning : qemuDomainObjBeginJobInternal:4933 : Cannot start job (modify, none) for domain YOUR_VM_NAM<E; current job is (modify, none) owned by (14159 remoteDispatchDomainBlockJobAbort, 0 <null>) for (38551s, 0s)

Others

Sep 29 12:56:15 SERVER systemd[1]: libvirtd.service: Found left-over process 272973 (dnsmasq) in control group while starting unit. Ignoring.

Related commands

• journalctl -u libvirtd
• Libvirt error messages in journald

See also

• virsh: Storage information, Connecting, Operations, Memory, Snapshots, Networking, CPU, release notes, virsh nodedev-list
• libvirtd: systemctl status libvirtd, systemctl status libvirt-guests, Libvirt release notes, logs, libvirtd.conf, /etc/libvirt/, /var/log/libvirt/
• KVM, Installation, QEMU, virsh, virtinst, libguestfs-tools, libvirt, qemu, Red Hat Virtualization (RHV), MacVTap, Virtio, oVirt, KVM services, KVM networking, KVM graphics, CPU, KVM on ARM