NetWorker: NDMP backup of PowerScale fails with error: Failed to allocate reader buffer due to low memory condition
Summary: Changes to the PowerScale OneFS hardware and changes to NDMP jobs to make more memory intense.
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Symptoms
- NetWorker Network Data Management Protocol (NDMP) backup fails with errors:
NDMP Service Error: Failed to allocate reader buffer due to low memory condition, try the backup operation later- Error message that is found in the NetWorker workflow or backup action logs under
/nsr/logs/policy/<workflow>/ - Error message that is found in the PowerScale support bundle under the nodes in the cluster
/<clustername>-1/varlog.tar/log/isi_ndmp_d
- PowerScale OneFS upgraded.
- Changes to NDMP client:
- NDMP Client is running with a heavy backup load due to configuration.
- Backup Renamed Directories (BRE) option is enabled under NetWorker NDMP Client Properties.
- NDMP multistream is enabled under NetWorker NDMP Client Properties.
Cause
PowerScale OneFS code upgrade and NDMP having a heavy backup load with limited memory.
Resolution
- User must contact PowerScale support and create a case.
- User must provide the PowerScale support bundle to the PowerScale support site.
Optional Steps to provide some relief for the issue, but this must be validated with PowerScale support:
- Verify the number of NDMP streams on PowerScale with the command:
# isi ndmp sessions list
- Verify the NDMP settings in PowerScale with the command:
# isi ndmp settings variables list
Etkilenen Ürünler
NetWorker Family, PowerScale OneFSMakale Özellikleri
Article Number: 000192843
Article Type: Solution
Son Değiştirme: 22 Oca 2026
Version: 2
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