Hello Markus, Thanks for your reply. I think this will not work in our case because the libvirtd/vm process is not crashed and after unpausing the vm runs without problems. Is it possible to unpause your vm in this situation or is the process really crashed? Jasper ________________________________________ Van: Markus Stockhausen [stockhausen@collogia.de] Verzonden: maandag 26 oktober 2015 19:47 Aan: Jasper Siero; users@ovirt.org Onderwerp: AW: [ovirt-users] Vm suddenly paused with error "vm has paused due to unknown storage error" Hi Jasper, from time to time we see a similar behaviour. All of a sudden a VM pauses due to some IO error. But it takes 5 months to occur. Our /var/log/libvirt/qemu/<vm>.log gives qemu-system-x86_64: block.c:2806: bdrv_error_action: Assertion `error >= 0' failed. Currently we are waiting to capture the next crash. I do not know if your error allows to enforce cores for in depth analysis. If yes you should activate 1) /usr/lib/systemd/system/libvirtd.service LimitCORE=infinity 2) /etc/security/limits.conf * soft core unlimited Markus ________________________________________ Von: users-bounces@ovirt.org [users-bounces@ovirt.org]" im Auftrag von "Jasper Siero [jasper.siero@target-holding.nl] Gesendet: Montag, 26. Oktober 2015 17:39 An: users@ovirt.org Betreff: [ovirt-users] Vm suddenly paused with error "vm has paused due to unknown storage error" Hi all, Since we upgraded our Ovirt nodes to CentOS 7 a vm (not a specific one but never more then one) will sometimes pause suddenly with the error "VM ... has paused due to unknown storage error". It happens now two times in a month. The Ovirt node uses san storage for the vm's running on it. When a specific vm is pausing with an error the other vm's keeps running without problems. The vm runs without problems after unpausing it. Versions: CentOS Linux release 7.1.1503 vdsm-4.14.17-0 libvirt-daemon-1.2.8-16 vdsm.log: VM Channels Listener::DEBUG::2015-10-25 07:43:54,382::vmChannels::95::vds::(_handle_timeouts) Timeout on fileno 78. libvirtEventLoop::INFO::2015-10-25 07:43:56,177::vm::4602::vm.Vm::(_onIOError) vmId=`77f07ae0-cc3e-4ae2-90ec-7fba7b11deeb`::abnormal vm stop device virtio-disk0 error eother libvirtEventLoop::DEBUG::2015-10-25 07:43:56,178::vm::5204::vm.Vm::(_onLibvirtLifecycleEvent) vmId=`77f07ae0-cc3e-4ae2-90ec-7fba7b11deeb`::event Suspended detail 2 opaque None libvirtEventLoop::INFO::2015-10-25 07:43:56,178::vm::4602::vm.Vm::(_onIOError) vmId=`77f07ae0-cc3e-4ae2-90ec-7fba7b11deeb`::abnormal vm stop device virtio-disk0 error eother ........... libvirtEventLoop::INFO::2015-10-25 07:43:56,180::vm::4602::vm.Vm::(_onIOError) vmId=`77f07ae0-cc3e-4ae2-90ec-7fba7b11deeb`::abnormal vm stop device virtio-disk0 error eother specific error part in libvirt vm log: block I/O error in device 'drive-virtio-disk0': Unknown error 32758 (32758) ........... block I/O error in device 'drive-virtio-disk0': Unknown error 32758 (32758) engine.log: 2015-10-25 07:44:48,945 INFO [org.ovirt.engine.core.vdsbroker.VdsUpdateRunTimeInfo] (DefaultQuartzScheduler_Worker-40) [a43dcc8] VM diataal-prod-cas1 77f07ae0-cc3e-4ae2-90ec-7fba7b11deeb moved from Up --> Paused 2015-10-25 07:44:49,003 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (DefaultQuartzScheduler_Worker-40) [a43dcc8] Correlation ID: null, Call Stack: null, Custom Event ID: -1, Message: VM diataal-prod-cas1 has paused due to unknown storage error. Has anyone experienced the same problem or knows a way to solve this? Kind regards, Jasper _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users