PowerScale OneFS Web Administration Guide

FSAnalyze (FSA)

The FSAnalyze job in OneFS gathers file system analytic information.

The FSAnalyze (FSA) job is used for namespace analysis. You can run FSA on demand or on a schedule through the command line interface and PAPI. A successful FSA job produces analysis result. You may run FSA at least once a day.

Disk usage is a component of FSA that adds up the overall usage for any given directory. It gathers disk usage efficiently and stores the results in a results database table, one row for every directory. FSA PAPI directory information endpoint exposes stored result. The result for a directory may be compared with the result at a different time using the same PAPI endpoint. You can run FSA on demand or on a schedule through the command line interface and PAPI. A successful FSA job produces analysis result. You may run FSA at least once a day.

The FSA job runs in two modes. The SCAN mode scans the OneFS file system entirely. The INDEX mode is the default mode and is more efficient. It relies on snapshots and change lists, updates, and walks a global metadata index.

FSA or IndexUpdate job is used to build the metadata index. The FSA job running in INDEX mode generates FSA Index. IndexUpdate job generates Cluster Index. The disk usage component walks the metadata index.