On Fri, May 24, 2024 at 08:21:19AM +0200, Hannes Reinecke wrote: > blk_validate_zoned_limits() checks whether any of the zoned limits > are set for non-zoned limits. As blk_set_stacking_limits() sets > max_zone_append_sectors() it'll fail to validate. Except that you now broke it for zone devices. Normally if we are not building a stacked zoned device there should at least be one underlying device that has a zero max_zone_append_limit, thus lowering the stacked device limit to 0. I guess you have a scenario where that is not the case, so please explain it so that we can fix it.