[ovirt-users] Disk Statistics error

Hi Team, I try to get the disk statistics using the following *Url: * * /ovirt-engine/api/disks?follow=statistics* and I get the following error in oVirt, 2018-08-17 15:34:24,663+08 ERROR [io.undertow.request] (default task-815) UT005023: Exception handling request to /ovirt-engine/api/v4/disks: java.lang.RuntimeException: org.jboss.resteasy.spi.UnhandledException: java.lang.IllegalStateException: Problem following 'statistics' link in Disks entity. at io.undertow.servlet.spec.RequestDispatcherImpl.forwardImpl( RequestDispatcherImpl.java:245) [undertow-servlet-2.0.9.Final. jar:2.0.9.Final] at io.undertow.servlet.spec.RequestDispatcherImpl.forwardImplSetup( RequestDispatcherImpl.java:147) [undertow-servlet-2.0.9.Final. jar:2.0.9.Final] at io.undertow.servlet.spec.RequestDispatcherImpl.forward( RequestDispatcherImpl.java:111) [undertow-servlet-2.0.9.Final. jar:2.0.9.Final] at org.ovirt.engine.api.restapi.invocation.VersionFilter. doFilter(VersionFilter.java:180) [restapi-jaxrs.jar:] at org.ovirt.engine.api.restapi.invocation.VersionFilter. doFilter(VersionFilter.java:98) [restapi-jaxrs.jar:] at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow-servlet-2.0.9.Final.jar:2.0.9.Final] at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl. doFilter(FilterHandler.java:131) [undertow-servlet-2.0.9.Final. jar:2.0.9.Final] at org.ovirt.engine.api.restapi.invocation.CurrentFilter. doFilter(CurrentFilter.java:117) [restapi-jaxrs.jar:] at org.ovirt.engine.api.restapi.invocation.CurrentFilter. doFilter(CurrentFilter.java:72) [restapi-jaxrs.jar:] at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow-servlet-2.0.9.Final.jar:2.0.9.Final] at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl. doFilter(FilterHandler.java:131) [undertow-servlet-2.0.9.Final. jar:2.0.9.Final] at org.ovirt.engine.core.aaa.filters.RestApiSessionMgmtFilter. doFilter(RestApiSessionMgmtFilter.java:78) [aaa.jar:] at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow-servlet-2.0.9.Final.jar:2.0.9.Final] at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl. doFilter(FilterHandler.java:131) [undertow-servlet-2.0.9.Final. jar:2.0.9.Final] at org.ovirt.engine.core.aaa.filters.EnforceAuthFilter. doFilter(EnforceAuthFilter.java:42) [aaa.jar:] at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow-servlet-2.0.9.Final.jar:2.0.9.Final] at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl. doFilter(FilterHandler.java:131) [undertow-servlet-2.0.9.Final. jar:2.0.9.Final] at org.ovirt.engine.core.aaa.filters.SsoRestApiNegotiationFilter. doFilter(SsoRestApiNegotiationFilter.java:84) [aaa.jar:] at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow-servlet-2.0.9.Final.jar:2.0.9.Final] at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl. doFilter(FilterHandler.java:131) [undertow-servlet-2.0.9.Final. jar:2.0.9.Final] at org.ovirt.engine.core.aaa.filters.SsoRestApiAuthFilter. doFilter(SsoRestApiAuthFilter.java:47) [aaa.jar:] at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:61) [undertow-servlet-2.0.9.Final.jar:2.0.9.Final] at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl. doFilter(FilterHandler.java:131) [undertow-servlet-2.0.9.Final. jar:2.0.9.Final] at org.ovirt.engine.core.aaa.filters.SessionValidationFilter. doFilter(SessionValidationFilter.java:59) [aaa.jar:] Caused by: java.lang.IllegalStateException: Problem following 'statistics' link in Disks entity. at org.ovirt.engine.api.restapi.resource.utils.LinkFollower. fetchData(LinkFollower.java:185) [restapi-jaxrs.jar:] at org.ovirt.engine.api.restapi.resource.utils.LinkFollower. followLink(LinkFollower.java:144) [restapi-jaxrs.jar:] at org.ovirt.engine.api.restapi.resource.utils.LinkFollower. followLinks(LinkFollower.java:132) [restapi-jaxrs.jar:] at org.ovirt.engine.api.restapi.resource.utils.LinkFollower. followLinks(LinkFollower.java:53) [restapi-jaxrs.jar:] at org.ovirt.engine.api.restapi.resource.BaseBackendResource. follow(BaseBackendResource.java:412) [restapi-jaxrs.jar:] at org.ovirt.engine.api.resource.DisksResource.doList(DisksResource.java:222) [restapi-definition.jar:] at sun.reflect.GeneratedMethodAccessor407.invoke(Unknown Source) [:1.8.0_181] at sun.reflect.DelegatingMethodAccessorImpl.invoke( DelegatingMethodAccessorImpl.java:43) [rt.jar:1.8.0_181] at java.lang.reflect.Method.invoke(Method.java:498) [rt.jar:1.8.0_181] at org.jboss.resteasy.core.MethodInjectorImpl.invoke(MethodInjectorImpl.java:140) [resteasy-jaxrs-20-3.5.1.Final.jar:3.5.1.Final] at org.jboss.resteasy.core.ResourceMethodInvoker. internalInvokeOnTarget(ResourceMethodInvoker.java:510) [resteasy-jaxrs-20-3.5.1.Final.jar:3.5.1.Final] at org.jboss.resteasy.core.ResourceMethodInvoker. invokeOnTargetAfterFilter(ResourceMethodInvoker.java:401) [resteasy-jaxrs-20-3.5.1.Final.jar:3.5.1.Final] at org.jboss.resteasy.core.ResourceMethodInvoker.lambda$ invokeOnTarget$0(ResourceMethodInvoker.java:365) [resteasy-jaxrs-20-3.5.1. Final.jar:3.5.1.Final] at org.jboss.resteasy.core.interception. PreMatchContainerRequestContext.filter(PreMatchContainerRequestContext.java:361) [resteasy-jaxrs-20-3.5.1.Final.jar:3.5.1.Final] at org.jboss.resteasy.core.ResourceMethodInvoker.invokeOnTarget( ResourceMethodInvoker.java:367) [resteasy-jaxrs-20-3.5.1. Final.jar:3.5.1.Final] at org.jboss.resteasy.core.ResourceMethodInvoker.invoke( ResourceMethodInvoker.java:339) [resteasy-jaxrs-20-3.5.1. Final.jar:3.5.1.Final] at org.jboss.resteasy.core.ResourceLocatorInvoker. invokeOnTargetObject(ResourceLocatorInvoker.java:137) [resteasy-jaxrs-20-3.5.1.Final.jar:3.5.1.Final] at org.jboss.resteasy.core.ResourceLocatorInvoker.invoke( ResourceLocatorInvoker.java:100) [resteasy-jaxrs-20-3.5.1. Final.jar:3.5.1.Final] at org.jboss.resteasy.core.SynchronousDispatcher.invoke( SynchronousDispatcher.java:441) [resteasy-jaxrs-20-3.5.1. Final.jar:3.5.1.Final] ... 96 more Caused by: java.lang.IllegalStateException: Problem fetching 'statistics' from Disk at org.ovirt.engine.api.restapi.resource.utils.LinkFollower. fetchData(LinkFollower.java:219) [restapi-jaxrs.jar:] at org.ovirt.engine.api.restapi.resource.utils.LinkFollower. fetchData(LinkFollower.java:182) [restapi-jaxrs.jar:] ... 114 more Caused by: java.lang.NullPointerException Any thoughts on this? Thanks, Hari -- DISCLAIMER - *MSysTechnologies LLC* This email message, contents and its attachments may contain confidential, proprietary or legally privileged information and is intended solely for the use of the individual or entity to whom it is actually intended. If you have erroneously received this message, please permanently delete it immediately and notify the sender. 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