On Monday December 11, liyiming@xxxxxxxxxxxx wrote: > > > > thank you, does that mean the major/minor device number in superblock structure can be ignore? > Yes. NeilBrown - To unsubscribe from this list: send the line "unsubscribe linux-raid" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html