John, > Furthermore, io_min may be mutated when stacking devices, and this > makes it a poor candidate to hold the stripe size. Such an example (of > when io_min may change) would be when the io_min is less than the > physical block size. io_min is not allowed to be smaller than the physical_block_size. How did we end up violating that requirement? logical_block_size <= physical_block_size <= io_min <= io_opt -- Martin K. Petersen
