mke2fs: Fill in min_io and opt_io with physical sector size

If the device does not have an explicitly specified minimum io_size or
optimal io_size, and the physical sector size is greater than the
block size, then use the physical sector size as a better-than-nothing
hint.

This should help for SSD's that have a physical sector size of 8k or
16k (which are reportedly will be coming soon).

Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
1 file changed