It is unclear now, I am not able to reproduce the error...probably changing the policy fixed the "null" record in the database.
My upgrade went w/o error from 4.1.3 to 4.1.4.
The engine.log from yesterday is here: with the password:BUG
https://cloud.aip.de/index.php/s/N6xY0gw3GdEf63H (I hope I am not imposing the sensitive data:)

most often errors are:
2017-07-31 15:17:08,547+02 ERROR [org.ovirt.engine.core.bll.MigrateVmCommand] (default task-263) [47ea10c5-0152-4512-ab07-086c59370190] Error during ValidateFailure.: java.lang.NullPointerException

and

2017-07-31 15:17:10,729+02 ERROR [org.ovirt.engine.core.utils.timer.SchedulerUtilQuartzImpl] (DefaultQuartzScheduler4) [11ad31d3] Failed to invoke scheduled method performLoadBalancing: null

On Tue, Aug 1, 2017 at 12:01 PM, Doron Fediuck <dfediuck@redhat.com> wrote:
Yes, none is a valid policy assuming you don't need any special considerations when running a VM.
If you could gather the relevant log entries and the error you see and open a new bug it'll help us
track and fix the issue. 
Please specify exactly from which engine version you upgraded and into which version.

On 1 August 2017 at 11:47, Arman Khalatyan <arm2arm@gmail.com> wrote:
Thank you for your response,
I am looking now in to records of the menu "Scheduling Policy": there is an entry "none", is it suppose to be there??
Because when I selecting it then error occurs.


On Tue, Aug 1, 2017 at 10:35 AM, Yanir Quinn <yquinn@redhat.com> wrote:
Thanks for the update, we will check if there is a bug in the upgrade process

On Mon, Jul 31, 2017 at 6:32 PM, Arman Khalatyan <arm2arm@gmail.com> wrote:
Ok I found the ERROR:
After upgrade the schedule policy was "none", I dont know why it was moved to none but to fix the problem I did following:
Edit Cluster->Scheduling Policy-> Select Policy: vm_evently_distributed
Now I can run/migrate the VMs.

I think there should be a some bug in the upgrade process.


On Mon, Jul 31, 2017 at 5:11 PM, Arman Khalatyan <arm2arm@gmail.com> wrote:
Looks like renewed certificates problem, in the ovirt-engine-setup-xx-xx.log I found following lines:
Are there way to fix it?


2017-07-31 15:14:28 DEBUG otopi.plugins.ovirt_engine_setup.ovirt_engine.pki.ca ca._enrollCertificates:330 processing: 'engine'[renew=True]
2017-07-31 15:14:28 DEBUG otopi.plugins.ovirt_engine_setup.ovirt_engine.pki.ca plugin.executeRaw:813 execute: ('/bin/openssl', 'pkcs12', '-in', '/etc/pki/ovirt-engine/keys/engine.p12', '-passin', 'pass:**FILTERED**', '-nokeys'), executable='None', cwd='None', env=None
2017-07-31 15:14:28 DEBUG otopi.plugins.ovirt_engine_setup.ovirt_engine.pki.ca plugin.executeRaw:863 execute-result: ('/bin/openssl', 'pkcs12', '-in', '/etc/pki/ovirt-engine/keys/engine.p12', '-passin', 'pass:**FILTERED**', '-nokeys'), rc=0
2017-07-31 15:14:28 DEBUG otopi.plugins.ovirt_engine_setup.ovirt_engine.pki.ca plugin.execute:921 execute-output: ('/bin/openssl', 'pkcs12', '-in', '/etc/pki/ovirt-engine/keys/engine.p12', '-passin', 'pass:**FILTERED**', '-nokeys') stdout:
Bag Attributes


On Mon, Jul 31, 2017 at 4:54 PM, Arman Khalatyan <arm2arm@gmail.com> wrote:
Sorry, I forgot to mention the error.
This error throws every time when I try to start the VM:

2017-07-31 16:51:07,297+02 ERROR [org.ovirt.engine.core.bll.RunVmCommand] (default task-239) [7848103c-98dc-45d1-b99a-4713e3b8e956] Error during ValidateFailure.: java.lang.NullPointerException
        at org.ovirt.engine.core.bll.scheduling.SchedulingManager.canSchedule(SchedulingManager.java:526) [bll.jar:]
        at org.ovirt.engine.core.bll.validator.RunVmValidator.canRunVm(RunVmValidator.java:157) [bll.jar:]
        at org.ovirt.engine.core.bll.RunVmCommand.validate(RunVmCommand.java:967) [bll.jar:]
        at org.ovirt.engine.core.bll.CommandBase.internalValidate(CommandBase.java:836) [bll.jar:]
        at org.ovirt.engine.core.bll.CommandBase.validateOnly(CommandBase.java:365) [bll.jar:]
        at org.ovirt.engine.core.bll.PrevalidatingMultipleActionsRunner.canRunActions(PrevalidatingMultipleActionsRunner.java:113) [bll.jar:]
        at org.ovirt.engine.core.bll.PrevalidatingMultipleActionsRunner.invokeCommands(PrevalidatingMultipleActionsRunner.java:99) [bll.jar:]
        at org.ovirt.engine.core.bll.PrevalidatingMultipleActionsRunner.execute(PrevalidatingMultipleActionsRunner.java:76) [bll.jar:]
        at org.ovirt.engine.core.bll.Backend.runMultipleActionsImpl(Backend.java:640) [bll.jar:]
        at org.ovirt.engine.core.bll.Backend.runMultipleActions(Backend.java:610) [bll.jar:]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) [rt.jar:1.8.0_141]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) [rt.jar:1.8.0_141]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_141]
        at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_141]
        at org.jboss.as.ee.component.ManagedReferenceMethodInterceptor.processInvocation(ManagedReferenceMethodInterceptor.java:52)
        at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
        at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
        at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.delegateInterception(Jsr299BindingsInterceptor.java:70) [wildfly-weld-10.1.0.Final.jar:10.1.0.Final]
        at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.doMethodInterception(Jsr299BindingsInterceptor.java:80) [wildfly-weld-10.1.0.Final.jar:10.1.0.Final]
        at org.jboss.as.weld.ejb.Jsr299BindingsInterceptor.processInvocation(Jsr299BindingsInterceptor.java:93) [wildfly-weld-10.1.0.Final.jar:10.1.0.Final]
        at org.jboss.as.ee.component.interceptors.UserInterceptorFactory$1.processInvocation(UserInterceptorFactory.java:63)
        at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
        at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
        at org.ovirt.engine.core.bll.interceptors.CorrelationIdTrackerInterceptor.aroundInvoke(CorrelationIdTrackerInterceptor.java:13) [bll.jar:]
        at sun.reflect.GeneratedMethodAccessor95.invoke(Unknown Source) [:1.8.0_141]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_141]
        at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_141]
        at org.jboss.as.ee.component.ManagedReferenceLifecycleMethodInterceptor.processInvocation(ManagedReferenceLifecycleMethodInterceptor.java:89)
        at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
        at org.jboss.as.ejb3.component.invocationmetrics.ExecutionTimeInterceptor.processInvocation(ExecutionTimeInterceptor.java:43) [wildfly-ejb3-10.1.0.Final.jar:10.1.0.Final]
        at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:340)
        at org.jboss.invocation.InterceptorContext$Invocation.proceed(InterceptorContext.java:437)
        at org.jboss.weld.ejb.AbstractEJBRequestScopeActivationInterceptor.aroundInvoke(AbstractEJBRequestScopeActivationInterceptor.java:73) [weld-core-impl-2.3.5.Final.jar:2.3.5.Final]
        at org.jboss.as.weld.ejb.EjbRequestScopeActivationInterceptor.processInvocation(EjbRequestScopeActivationInterceptor.java:83) [wildfly-weld-10.1.0.Final.jar:10.1.0.Final]
....
etc...



On Mon, Jul 31, 2017 at 4:06 PM, Arik Hadas <ahadas@redhat.com> wrote:
Hi,
Please provide the engine log so we can figure out which validation fails.

On Mon, Jul 31, 2017 at 4:57 PM, Arman Khalatyan <arm2arm@gmail.com> wrote:
Hi,
I am running in to trouble with 4.1.4 after engine upgrade I am not able to start or migrate virtual machines:
getting following error:
General command validation failure
Are there any workarounds?

​

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