HSM-QFS: du -sk Gives Different Results, Before and After Staging a Sparse File

(Doc ID 1987513.1)

Last updated on SEPTEMBER 23, 2016

Applies to:

Oracle Hierarchical Storage Manager (HSM) and StorageTek QFS Software - Version 5.0 and later
Information in this document applies to any platform.

Symptoms

 The 'du -sk' gives different results, before and after staging a sparse file.

The term "sparse file" is used to mean one containing "holes". These files can be recognized on a running system because its disk usage is less than its size. This can be confirmed when comparing it with a normal file, using the 'du' or 'ls -ls' commands.

Cause

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