[Lustre-devel] storing SOM epoch in EA

Vitaly Fertman vitaly at sun.com
Tue Feb 19 02:59:47 PST 2008

> hi!
> Can we use IAM for storing epoch? It is fast and does not have such 
> strong size limitations. 
there are no size limitations, EA can be stored in a separate
block, we just want to minimize IO.

> We could make "epoch" index in mkfs time (like  
> it is done for existing indexes now) and use object's fid as a key and 
> epoch as value.
this looks like it will double IO/seeks for each inode.


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