[gpfsug-discuss] wanted...gpfs policy that places larger files onto a pool based on size

[Marc A Kaplan]

Placement policy rules, SET POOL ..., are evaluated at open/create time 
before any write(2) calls have been made, so GPFS has no "idea" how big 
the file is going to ultimately be. In other words at file creation time 
FILE_SIZE, if we had implemented it, would be 0, so rather than mislead 
you and answer the question "why is FILE_SIZE==0, we left FILE_SIZE 
undefined in SET POOL rules.

Of course, we at IBM have thought of at least some other scenarios, and we 
are listening here... As the last so many years show, GPFS continues to 
add features, etc, etc.

-- marc


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