[lustre-devel] Compact layouts

[Patrick Farrell]

All,

There is an old idea for reducing the data required to describe file striping by using a bitmap to record which OSTs are in use.  As best I can tell, this was most recently described here:
http://wiki.lustre.org/Layout_Enhancement_Solution_Architecture#Compact_Layouts_2

I’m curious if this has been pursued any further, if there’s a JIRA or other place that might have more info or be tracking the idea.  I poked around and didn’t find anything.

In particular, this comment:
“with enough data that for each OST index set in the bitmap, a corresponding OST object FID may be computed”
Points at the difficult part of implementing this.

So, before I get too far considering this problem - Is there more out there somewhere?  Hoping to avoid duplicating work!

Thanks,

  *   Patrick
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