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After the PowerProtect upgrade to 19.20 or 19.21, the option "Backup using snapshot change list" under Configure Asset Parameters in the PowerProtect Interface is cleared. The cleared option indicates it is disabled; however, the option is automatically enabled and ' nasdm ' backup logs confirm the setting [ "changeFileListEnabled": true ]. When Change List tracking is enabled, PowerScale NAS Appliance backups consume more NAS cluster resources and may cause unwanted CPU utilization spikes.
The root cause of the issue is a regression in the PowerProtect Interface.
The regression is fixed in PowerProtect version 19.22. To disable the option while running PowerProtect versions 19.20 or 19.21, there are two options: Check the checkbox "Backup using snapshot change list" under Configure Asset Parameters and click "Save." Go back into the Configure Asset Parameters widget, clear the checkbox "Backup using snapshot change list," and click "Save" again. This procedure should disable the option which could be confirmed from the ' nasdm ' backup log for the asset showing [ "changeFileListEnabled": false ] . Alternately, the option can be disabled for each asset using REST Application Programming Interface (API) as follows: API: PATCH https://< ppdm_ip>:8443/api/v2/assets-batch Payload: { "requests": [ { "id": "1", "body": { "id": "<asset_id>", "extendedData": { "changeFileListEnabled": false } } } ] }
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