[OpenIndiana-discuss] What happens when a ZIL drive dies?

[Bob Friesenhahn]

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
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/