Hello, Thanks to previous answers, I was able to make backups. Unfortunately, we had some infrastructure issues and after the host reboots new problems appeared. I am not able to do any backup using the commands that worked yesterday. I looked through the logs and there is something like this: 2020-07-17 15:06:30,644+02 ERROR [org.ovirt.engine.core.bll.StartVmBackupCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-54) [944a1447-4ea5-4a1c-b971-0bc612b6e45e] Failed to execute VM backup operation 'StartVmBackup': {}: org.ovirt.engine.core.common.errors.EngineException: EngineException: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to StartVmBackupVDS, error = Checkpoint Error: {'parent_checkpoint_id': None, 'leaf_checkpoint_id': 'cd078706-84c0-4370-a6ec-654ccd6a21aa', 'vm_id': '116aa6eb-31a1-43db-9b1e-ad6e32fb9260', 'reason': 'Parent checkpoint ID does not match the actual leaf checkpoint'}, code = 1610 (Failed with error unexpected and code 16) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.VdsHandler.handleVdsResult(VdsHandler.java:114) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.VDSBrokerFrontendImpl.runVdsCommand(VDSBrokerFrontendImpl.java:33) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.CommandBase.runVdsCommand(CommandBase.java:2114) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.StartVmBackupCommand.performVmBackupOperation(StartVmBackupCommand.java:368) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.StartVmBackupCommand.runVmBackup(StartVmBackupCommand.java:225) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.StartVmBackupCommand.performNextOperation(StartVmBackupCommand.java:199) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.SerialChildCommandsExecutionCallback.childCommandsExecutionEnded(SerialChildCommandsExecutionCallback.java:32) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.ChildCommandsCallbackBase.doPolling(ChildCommandsCallbackBase.java:80) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.tasks.CommandCallbacksPoller.invokeCallbackMethodsImpl(CommandCallbacksPoller.java:175) at deployment.engine.ear.bll.jar//org.ovirt.engine.core.bll.tasks.CommandCallbacksPoller.invokeCallbackMethods(CommandCallbacksPoller.java:109) at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) at java.base/java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) at org.glassfish.javax.enterprise.concurrent//org.glassfish.enterprise.concurrent.internal.ManagedScheduledThreadPoolExecutor$ManagedScheduledFutureTask.access$201(ManagedScheduledThreadPoolExecutor.java:383) at org.glassfish.javax.enterprise.concurrent//org.glassfish.enterprise.concurrent.internal.ManagedScheduledThreadPoolExecutor$ManagedScheduledFutureTask.run(ManagedScheduledThreadPoolExecutor.java:534) at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128) at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628) at java.base/java.lang.Thread.run(Thread.java:834) at org.glassfish.javax.enterprise.concurrent//org.glassfish.enterprise.concurrent.ManagedThreadFactoryImpl$ManagedThread.run(ManagedThreadFactoryImpl.java:250) And the last error is: 2020-07-17 15:13:45,835+02 ERROR [org.ovirt.engine.core.bll.StartVmBackupCommand] (EE-ManagedScheduledExecutorService-engineScheduledThreadPool-Thread-14) [f553c1f2-1c99-4118-9365-ba6b862da936] Failed to execute VM backup operation 'GetVmBackupInfo': {}: org.ovirt.engine.core.common.errors.EngineException: EngineException: org.ovirt.engine.core.vdsbroker.vdsbroker.VDSErrorException: VDSGenericException: VDSErrorException: Failed to GetVmBackupInfoVDS, error = No such backup Error: {'vm_id': '116aa6eb-31a1-43db-9b1e-ad6e32fb9260', 'backup_id': 'bf1c26f7-c3e5-437c-bb5a-255b8c1b3b73', 'reason': 'VM backup not exists: Domain backup job id not found: no domain backup job present'}, code = 1601 (Failed with error unexpected and code 16) (these errors are from full backup) Like I said this is very strange because everything was working correctly. Regards Łukasz Kołaciński Junior Java Developer e-mail: l.kolacinski@storware.eu<mailto:l.kolacinski@storware.eu> <mailto:m.helbert@storware.eu> [STORWARE]<http://www.storware.eu/> ul. Leszno 8/44 01-192 Warszawa www.storware.eu <https://www.storware.eu/> [facebook]<https://www.facebook.com/storware> [twitter]<https://twitter.com/storware> [linkedin]<https://www.linkedin.com/company/storware> [Storware_Stopka_09]<https://www.youtube.com/channel/UCKvLitYPyAplBctXibFWrkw> Storware Spółka z o.o. nr wpisu do ewidencji KRS dla M.St. Warszawa 000510131 , NIP 5213672602. Wiadomość ta jest przeznaczona jedynie dla osoby lub podmiotu, który jest jej adresatem i może zawierać poufne i/lub uprzywilejowane informacje. Zakazane jest jakiekolwiek przeglądanie, przesyłanie, rozpowszechnianie lub inne wykorzystanie tych informacji lub podjęcie jakichkolwiek działań odnośnie tych informacji przez osoby lub podmioty inne niż zamierzony adresat. 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