zfs/cmd/zpool/zpool.d/media

#!/bin/sh
#
# Print out the type of device
#

if [ "$1" = "-h" ] ; then
	echo "Show whether a vdev is a file, hdd, ssd, or iscsi."
	exit
fi

if [ -b "$VDEV_UPATH" ]; then
	device="${VDEV_UPATH##*/}"
	read -r val 2>/dev/null < "/sys/block/$device/queue/rotational"
	case "$val" in
		0) MEDIA="ssd" ;;
		1) MEDIA="hdd" ;;
	esac

	vpd_pg83="/sys/block/$device/device/vpd_pg83"
	if [ -f "$vpd_pg83" ]; then
		if grep -q --binary "iqn." "$vpd_pg83"; then
			MEDIA="iscsi"
		fi
	fi
else
	if [ -f "$VDEV_UPATH" ]; then
		MEDIA="file"
	fi
fi

echo "media=$MEDIA"