On Thu, 7 Jun 2012, Jesus Cea wrote:

I always wondered WHY. What is the point of keeping separate ZILs (one
per dataset) when having a discrete LOG device.

Any idea?.

The implementation is obviously very much simplified by using discrete contiguous ZILs. Otherwise there is a lot more complexity and activity to track which I/Os have completed. With the current approach, only one write is necessary to record that a batch of writes have been committed to the pool.

Bob
--
Bob Friesenhahn
[email protected], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

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