On Wed, Jul 16, 2025 at 07:39:18PM +0800, Coly Li wrote: > >> For raid level 4/5/6 such split method might be problematic and hurt > >> large read/write perforamnce. Because limits.max_hw_sectors are not > >> always aligned to limits.io_opt size, the split bio won't be full > >> stripes covered on all data disks, and will introduce extra read-in I/O. > >> Even the bio's bi_sector is aligned to limits.io_opt size and large > >> enough, the resulted split bio is not size-friendly to corresponding > >> raid456 level. > > > > So why don't you set a sane max_hw_sectors value instead of duplicating > > the splitting logic? > > Can you explain a bit more detail? In case I misunderstand you like I > did with Kuai’s comments Just set the max_hw_sectors you want.
