Journalctl -u libvirtd
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journalctl -r -u libvirtd | grep -i errorjournalctl -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
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
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