When the pool is full and a host attempts to perform any write that requires a new extent to be allocated, a write error is returned to the host.
Just like how the heading mentions my question is how does a pool react when it reaches 100% utilization. Does the performance go down. Can a pool reach 100% utilization. In my experience I have not seen a pool go more than 92-93 % as we eventually expand the pool before it runs out of space.
What happens when a thin pool reaches 100%.