2016 typedef struct vdev {  struct
2019 	vdev_list_t	v_children;	/* children of this vdev */  argument
2020 	const char	*v_name;	/* vdev name */  argument
2021 	uint64_t	v_guid;		/* vdev guid */  argument
2026 	struct vdev	*v_top;		/* parent vdev */  argument
2028 	vdev_state_t	v_state;	/* current state */  argument
2029 	vdev_phys_read_t *v_phys_read;	/* read from raw leaf vdev */  argument
2030 	vdev_phys_write_t *v_phys_write; /* write to raw leaf vdev */  argument
2031 	vdev_read_t	*v_read;	/* read from vdev */  argument
2036 	 * Values stored in the config for an indirect or removing vdev.  argument
2038 	vdev_indirect_config_t vdev_indirect_config;  argument
2039 	vdev_indirect_mapping_t *v_mapping;  argument