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SCV backup starts to fail with exception "Content is not allowed in prolog"

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snapcenter
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Applies to

  • SnapCenter Plug-in for VMware vSphere(SCV) 4.5
  • No configuration changes since the last successful backup

Issue

  • SCV backup starts to fail to discover resources with message:

Error: Unable to discover resources on SCV: Storage discovery failed, received error during operation: java.lang.NullPointerException.

8327afe0-83f5-485e-bb44-cc25d6e07ec0.png

  • vmcontrol_<JOB_ID>.log shows that storage discovery failed with java.lang.NullPointerException

ERROR <SCV> --- [94819250-652034] c.n.a.s.p.DiscoverResourcesManager       : [JobId:6370] Storage discovery failed, received error during operation: java.lang.NullPointerException. Please refer to operation logs for more details.
java.lang.NullPointerException
    at com.netapp.aegis.vsphere.VsphereInventoryService.getVirtualMachineByUuid(VsphereInventoryService.java:132)
    at com.netapp.aegis.discovery.VsphereDiscoveryManager.addVmInfo(VsphereDiscoveryManager.java:781)
    at com.netapp.aegis.backup.BackupMetadataManager.discoverMetdataInfo(BackupMetadataManager.java:725)
    at com.netapp.aegis.discovery.StorageDiscoveryManager.discoverVirtualEntities(StorageDiscoveryManager.java:260)
    at com.netapp.aegis.sms.provider.DiscoverResourcesManager.discoverResources(DiscoverResourcesManager.java:222)
    at sun.reflect.GeneratedMethodAccessor125.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)

  • vmcontrol-<TIMESTAMP>.log shows that VI SDK gets exception with Content is not allowed in prolog

DEBUG <SCV> --- [94819250-652034] c.n.a.v.VcenterUtil                      : VCURL :https://<VCENTER_IP>:443/sdk
DEBUG <SCV> --- [94819250-652034] c.n.a.v.VsphereService                   : vSphereServiceURL is : https://<VCENTER_IP>:443/sdk
DEBUG <SCV> --- [94819250-652034] c.n.a.v.VsphereService                   : VI SDK invoke exception:org.dom4j.DocumentException: Error on line 1 of document  : Content is not allowed in prolog.
ERROR <SCV> --- [94819250-652034] c.n.a.s.p.DiscoverResourcesManager       : VI SDK invoke exception:org.dom4j.DocumentException: Error on line 1 of document  : Content is not allowed in prolog.​​​​​​

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