#!/bin/sh

DEVICE="$1"

TOTAL_DEVICES=$(mdadm -D "$DEVICE" | grep 'Total Devices' | cut -d':' -f 2 | tr -d ' ')

mdadm -D "$DEVICE" | tail -n "$TOTAL_DEVICES" | tr -s ' ' | cut -d' ' -f 6

# Example Output:
#
#   active
#   active
#   active
#   active
#   active
#

# Da https://linux.die.net/man/8/mdadm pare che gli output sensati siano "missing", "failed", "spare" ed "active".