Comment 13 for bug 1318614

guys, mkfs should consume "I/O hints" from block device (see ioctl BLKIOOPT, BLKPBSZGET etc) to layout ondisk data structure and data areas relative to the underlying storage's 'optimal_io_size'.
So the easiest solution is to eliminate block and sector size params from mkfs and let mkfs figure out optimal parameters.
look at mkfs.xfs source code - https://git.kernel.org/cgit/fs/xfs/xfsprogs-dev.git/tree/mkfs/xfs_mkfs.c#n1783 looks like it already uses optimal sector size parameters which we override for some reason.