NVP vProxy: VM backups intermittently fail 5029 RPC operation/function failure

Summary: NetWorker VMware Protection (NVP) Virtual Machine (VM) backups intermittently fail with the following error observed in the backup session log "Warning occurred while releasing writer resources: Error closing temp data file: Error closing file 'SAVESET_PATH' on Data Domain 'DD_HOSTNAME': [5029] RPC operation/function failure " ...

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Symptoms

  • NetWorker VMware Protection (NVP) vProxy VM backups intermittently fail for some VMs.
  • The VM backup session log shows:
YYYY-MM-DDTHH:MM:DD WARN:   [@(#) Build number: ##] Data Mover: Hard disk #: Warning occurred while releasing writer resources: Error closing temp data file:  Error closing file '/NW_SERVER/POOL/active/LONG_SSID/VM_NAME.vmdk' on DataDomain 'DD_HOSTNAME': [5029] rpc operation/function failure
NetWorker Server Location:
Linux: /nsr/logs/policy/POLICY_NAME/WORKFLOW_NAME/
Windows: C:\Program Files\EMC NetWorker\nsr\logs\policy\POLICY_NAME\WORKFLOW_NAME\

vProxy: /opt/emc/vproxy/runtime/logs/recycle/vbackupd/DATE 
YYYY-MM-DDTHH:MM:SS ERROR:  [13628] [140370599835392] ddp_close_file() failed, Err: 5029-A previous operation on this file has failed and no further APIs can be processed
YYYY-MM-DDTHH:MM:SS ERROR:  ddpg_close_file (1547): Closing file with fd=FILE_HANDLE# failed, error=5029
  • vProxy was upgraded to 4.3.0-54 or newer 4.3.0-x.
  • Data Domain OS is 7.X

Cause

This issue was raised to NetWorker and Data Domain engineering. There is a defect in DDBOOST library 7.13.0.0-1072298.

Resolution

A Data Domain code fix is released in Data Domain OS 8.0.0 onwards.
A vProxy code fix is released in 4.4.0-3 which is released alongside NetWorker 19.11. 

Upgrade the vProxy appliances to 4.4.0-3 onwards.  
NVP vProxy: How To Upgrade the NVP vProxy Appliance Using nsrvproxy_mgmt

DD OS should also be upgraded to 8.0.x.

Workaround:

Replace the vProxies with 4.3.0-47 vProxies.
4.3.0-47 uses DDBOOST library 7.12.0.0-1052569 and this issue is not observed on this release.
https://www.dell.com/support/home/en-us/product-support/product/networker/drivers

Additional Information

NVP vProxy: How To Upgrade the NVP vProxy Appliance using nsrvproxy_mgmt

Affected Products

Data Domain Boost, NetWorker

Products

NetWorker Family, Data Domain, NetWorker Series
Article Properties
Article Number: 000225623
Article Type: Solution
Last Modified: 14 Jul 2025
Version:  5
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