It seems to me that the data is much more strongly bound together row-wise than column-wise. People who use this will probably want to access information about logical volumes, i.e., they will want to treat LV NAME as a primary key. So I would recommend the hash structure as most natural: 
$value = $hash->{$lv_name}{$attribute};

[download]
Presenting the data in parallel arrays requires one to think about an abstract index to synchronize data extraction, which is less intuitive than the LV NAME.

-Mark

In reply to Re: How best to return data from a package ??? by kvale
in thread How best to return data from a package ??? by lcanty

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