On Tue, Apr 02, 2024 at 03:17:26PM +0200, Hannes Reinecke wrote: > Hi Christoph, > > brd ends up with the following queue limits: > > optimal_io_size: 0 > minimum_io_size: 4096 > hw_sector_size: 512 > physical_block_size: 4096 > > which I find particularly odd; how can the minimum I/O size be _larger_ > than the hw_sector_size? Wouldn't that imply that we can only send I/O > in units of physical block size, rendering the hw_sector_size pretty much > pointless? The minimum_io_size is always larger or equal to hw sector size. It really is the minimal efficient I/O size.
