NVP vProxy: backup or clone fails on "retention lock" enabled DD devices after upgrading to NetWorker 19.6

Summary: VMs protected by the NetWorker vProxy appliance fail to backup and or clone after the NetWorker server was upgraded to 19.6 from a previous release. The Data Domain devices that are used are configured with the "retention lock" feature. ...

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Symptoms

  • NetWorker server was upgraded to 19.6.0 from a previous release.
  • The Data Domain Devices are configured with "retention lock" (Governance or Compliance).
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  • VM backup and or clone operations are failing with the following error.

Error: 
  
nsrmmd#2 SYSTEM critical Unable to remove SSID file '/linux1/SNDDCLRL/85/22/df901338-00000006-f8fc555f-61fc555f-00095000-9b240656' on device 'rd=dc.amer.lan:ddve1.amer.lan_SNDDCLRL': Unable to stat save set file '/linux1/SNDDCLRL/85/22/df901338-00000006-f8fc555f-61fc555f-00095000-9b240656': Retrieving statistics for '/linux1/SNDDCLRL/85/22/df901338-00000006-f8fc555f-61fc555f-00095000-9b240656' failed [5004] ([ 3172] [4820] Thu Feb 03 17:38:10 2022 ddp_stat() failed, Path //linux1/SNDDCLRL/85/22/df901338-00000006-f8fc555f-61fc555f-00095000-9b240656, Err: 5004-nfs lookup failed (nfs: No such file or directory) ). 

Cause

The ddboost user is not granted for the right of RL enabled mtree.

Resolution

The issue has been fixed in 19.6.1, which is tentatively targeted for release April 2022.

Workaround: 

Create a new device labeled to a new pool; when creating the device leave the "DD Retention Lock" checkbox empty. Configure the VM backup and clone operations to clone to devices without retention lock enabled. Optionally, instead of configuring new devices the NetWorker server can be downgraded to NetWorker 19.5 until 19.6.1 is available.
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Additional Information

For more information on Data Domain Retention Lock refer to the 'Dell EMC NetWorker Data Domain Boost Integration Guide' available through https://www.dell.com/support/home/product-support/product/networker/docs  

NetWorker package downloads are available through: https://www.dell.com/support/home/product-support/product/networker/drivers

Affected Products

NetWorker Family
Article Properties
Article Number: 000196085
Article Type: Solution
Last Modified: 02 Dec 2022
Version:  6
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