Can you please share full engine log?
Also, what is your engine's version?

Regards,
Shani Leviim

On Mon, Aug 27, 2018 at 10:23 AM, Hari Prasanth Loganathan <hariprasanth.l@msystechnologies.com> wrote:
Hi Shani,

Thanks for your response, But I need to get the disk statistics of all the VM's.
Only for this

/ovirt-engine/api/disks?follow=statistics
I get this error.

Thanks,
Hari


On Mon, Aug 27, 2018 at 12:31 PM, Shani Leviim <sleviim@redhat.com> wrote:
Hi Hari,
In case you want the statistics of all the VM's disks, send this request:
GET /ovirt-engine/api/vms/123?follow=disk_attachments.disk.statistics


Regards,
Shani Leviim

On Sun, Aug 26, 2018 at 6:24 PM, Hari Prasanth Loganathan <hariprasanth.l@msystechnologies.com> wrote:

I want to get disk statistics of all disks.
Not just one disk. 



On Sun, 26 Aug 2018 at 1:25 PM, Shani Leviim <sleviim@redhat.com> wrote:
Hi Hari,
According to [1], it seems that the command's syntax is:
GET /ovirt-engine/api/disks/123/statistics
Can you give it a try?
Thanks

[1] http://ovirt.github.io/ovirt-engine-api-model/4.3/#types/disk/links/statistics

Regards,
Shani Leviim

On Fri, Aug 17, 2018 at 11:19 AM, Hari Prasanth Loganathan <hariprasanth.l@msystechnologies.com> wrote:
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


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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. If you are not the intended recipient of the email message,you are notified strictly not to disseminate,distribute or copy this e-mail.E-mail transmission cannot be guaranteed to be secure or error-free as Information could be intercepted, corrupted, lost, destroyed, incomplete or contain viruses and MSysTechnologies LLC accepts no liability for the contents and integrity of this mail or for any damage caused by the limitations of the e-mail transmission.