On Thu, Jan 7, 2021, 16:48 Łukasz Kołaciński <l.kolacinski@storware.eu> wrote: ...

*2020-12-08 10:18:35,451+01 INFO [org.ovirt.engine.core.vdsbroker.monitoring.VmAnalyzer] (ForkJoinPool-1-worker-31) [] VM '35183baa-1c70-4016-b7cd-528889876f19'(stor2rrd) moved from 'Up' --> 'Down'* *2020-12-08 10:18:35,466+01 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (ForkJoinPool-1-worker-31) [] EVENT_ID: VM_DOWN_ERROR(119), VM stor2rrd is down with error. Exit message: Lost connection with qemu process.*

Looks like qemu crashed when stopping the backup. Can you file a bug for this, and attach logs? We these logs from host the vm was running on: - /var/log/vdsm/vdsm.log (the right log showing the time backup was stopped) - /var/log/ovirt-imageio/daemon.log - /var/log/libvirt/libvird.log (may be missing) - /var/log/libvirt/qemu/<vm-name>.log Also the vm xml (virsh -r dumpxml vm-name). ...

The environment of faulty host is: OS Version: RHEL - 8.3 - 1.0.el8 OS Description: Red Hat Enterprise Linux 8.3 (Ootpa) Kernel Version: 4.18.0 - 240.1.1.el8_3.x86_64 KVM Version: 5.1.0 - 14.module+el8.3.0+8438+644aff69 LIBVIRT Version: libvirt-6.6.0-7.module+el8.3.0+8424+5ea525c5

I never had any issue with these version: # rpm -q libvirt-daemon qemu-kvm libvirt-daemon-6.6.0-8.module+el8.3.1+8648+130818f2.x86_64 qemu-kvm-5.1.0-13.module+el8.3.0+8424+e82f331d.x86_64 Looks like you run older libvirt version, but have newer qemu version. Where did you got these packages? Are you running on RHEL or Centos? Nir