File system operation on multi-tiered volume

A method for operating a file system on an underlying volume, the method comprising:

• an act of identifying a trait set for each of a plurality of tiers within a volume including a particular trait set of a particular tier;
• an act of identifying a file system namespace that is either already in or that is to be provided within a volume;
• an act of determining a storage trait set to be applied to the file system namespace;
• an act of identifying one of the plurality of tiers that the file system namespace is to be stored in based on matching the corresponding storage trait set of the file system namespace to the trait set of the identified tier;
• and
• an act of causing the file system namespace to be store within the identified tier of the volume.

A system comprising:

• a file system that operates on a volume that comprises a plurality of tiers of the volume to the file system, each of the plurality of tiers corresponding to a trait set of the underlying storage, the file system configured to performing the following:
• an act of acquiring logical storage locations and trait sets for each of a plurality of tiers of a volume;
• an act of identifying a file system namespace within the volume;
• an act of determining a storage trait set corresponding to the file system namespace;
• an act of identifying a trait set of a particular tier of the volume;
• an act of identifying the particular tier of the volume into which to store the file system namespace based on matching the corresponding storage trait set of the file system namespace to the trait set of the identified tier;
• and
• an act of causing the file system namespace to be store within the identified tier of the volume.