SCV backup fails Discovering Resources due to name resolution issue

Applies to

SnapCenter Plug-in for VMware vSphere (SCV)

Issue

• SCV backup job fails to discover resources with error:

The backup job <JOB_ID> has completed on primary
Status: failed
Task failures
Task 'Discovering Resources' failed with error: Unable to discover resources on SCV: Failed to get the storage system for host resource : Name : /<NFS_VOLUME>, Type: SDNASDir

• wfe_<JOB_ID>.log indicates Unable to discover resources on SCV: Failed to get the storage system for host resource

 INFO snapcenter --- [       Thread-3] c.n.w.m.WorkflowExecutor                 : Activity - Discovering Resources,  Starting
DEBUG snapcenter --- [       Thread-3] c.n.w.u.LogHelper                        : Starting discover resources activity
DEBUG snapcenter --- [       Thread-3] c.n.w.r.SCVBackupServiceImpl             : Discovering resources on SCV
DEBUG snapcenter --- [       Thread-3] c.n.w.r.u.RestClientUtil                 : Connecting to scv url: https://localhost:8144/scbr/smcoreplugin/discoverResources
ERROR snapcenter --- [       Thread-3] c.n.w.r.SCVBackupServiceImpl             : Unable to discover resources on SCV: Failed to get the storage system for host resource : Name : <NFS_VOLUME>, Type: SDNASDir
DEBUG snapcenter --- [       Thread-3] c.n.w.u.LogHelper                        : Exception in discover resources com.netapp.wfe.model.ApiException: Unable to discover resources on SCV: Failed to get the storage system for host resource : Name : <NFS_VOLUME>, Type: SDNASDir

• vmcontrol_<JOB_ID>.log indicates Failed to get the storage system for host resource by using NFS LIF IP

DEBUG snapcenter --- [tp1825027294-18] c.n.a.d.VsphereDiscoveryManager          : Datastore type is NFS
DEBUG snapcenter --- [tp1825027294-18] c.n.a.m.DatastoreStorageDetailsCache     : Calling GetNasStorageInfo with NFS LIF <IP> and exportPath <NFS_VOLUME>
..
ERROR snapcenter --- [tp1825027294-18] c.n.a.s.c.SnapManagerStorageServiceImpl  : Failed to get the storage system for host resource : Name : <NFS_VOLUME>, Type: SDNASDir
ERROR snapcenter --- [tp1825027294-18] c.n.a.m.DatastoreStorageDetailsCache     : Failed to get the storage system for host resource : Name : <NFS_VOLUME>, Type: SDNASDir
ERROR snapcenter --- [tp1825027294-18] c.n.a.s.p.DiscoverResourcesManager       : [JobId:<JOB_ID>] com.netapp.nvpf.api.model.ApiException: Failed to get the storage system for host resource : Name : <NFS_VOLUME>, Type: SDNASDir
ERROR snapcenter --- [tp1825027294-18] c.n.a.s.p.DiscoverResourcesManager       : Encountered error while processing discover resources. Error: Failed to get the storage system for host resource : Name : <NFS_VOLUME>, Type: SDNASDir
com.netapp.nvpf.api.model.ApiException: Failed to get the storage system for host resource : Name : <NFS_VOLUME>, Type: SDNASDir

• At a time different from backup job, ProtectionService.log reports error:

[WRN] [Storage] [TID:11] [RID:] [CID:] [JID:-1] Failed to resolve <IP_ADDRESS> byHostEntry, Exception:System.Net.Internals.SocketExceptionFactory+ExtendedSocketException (00000005, 0xFFFDFFFF): Name or service not known
   at System.Net.Dns.InternalGetHostByAddress(IPAddress address)
   at System.Net.Dns.GetHostEntry(String hostNameOrAddress)
   at SnapDrive.Nsf.Common.Infrastructure.Storage.NetworkResourceIdCache.ResolveWithDns(String hostName)