On 7/11/25 5:09 PM, John Garry wrote: > This value in io_min is used to configure any atomic write limit for the > stacked device. The idea is that the atomic write unit max is a > power-of-2 factor of the stripe size, and the stripe size is available > in io_min. > > Using io_min causes issues, as: > a. it may be mutated > b. the check for io_min being set for determining if we are dealing with > a striped device is hard to get right, as reported in [0]. > > This series now sets chunk_sectors limit to share stripe size. Hmm... chunk_sectors for a zoned device is the zone size. So is this all safe if we are dealing with a zoned block device that also supports atomic writes ? Not that I know of any such device, but better be safe, so maybe for now do not enable atomic write support on zoned devices ? -- Damien Le Moal Western Digital Research
