SMART info parser

smarty.py

#!/usr/bin/python
# encoding: utf-8
import subprocess
import os
import re

print "Storage status:"
for node in os.listdir("/dev"):
    if not re.match("[sv]d[a-z]$", node): continue
    cmd = "/usr/sbin/smartctl", "-a", "/dev/%s" % node
    head_parks = None
    for line in subprocess.check_output(cmd).split("\n"):
        if line.startswith("194 "):
            _, temp = line.rsplit(" ", 1)
            temp = int(temp)
        if line.startswith("190 "):
            _, temp = line.rsplit(" ", 1)
            temp = int(temp)
        if line.startswith("  5 "):
            reallocated_sectors = int(line.rsplit(" ", 1)[1])
            
        if line.startswith("  9 "):
            _, j = line.rsplit(" ", 1)
            lifetime_days = int(j) / 24.0
            lifetime_years = 0
            while lifetime_days > 365:
                lifetime_years += 1
                lifetime_days -= 365
            if lifetime_years:
                lifetime = "%d years, %d days," % (lifetime_years, lifetime_days)
            else:
                lifetime = "%d days," % lifetime_days
        if line.startswith("193 "):
            head_parks = int(line.rsplit(" ", 1)[1])
            if head_parks > 1000:
                head_parks = "%dk" % (head_parks / 1000.0)
            else:
                head_parks = str(head_parks)
    
        if line.startswith(" 12 "):
            power_cycles = int(line.rsplit(" ", 1)[1])
        if line.startswith("Device Model:"):
            device_model = line.split(":", 1)[1].strip()
        if line.startswith("Serial Number:"):
            serial_number = line.split(":", 1)[1].strip()
        if line.startswith("241 "):
            tbs_written = int(line.rsplit(" ", 1)[1]) * 512 / 2**40
    device_name = "%s (%s)" % (device_model, serial_number)
    if head_parks:
        print "* %-60s %18s %d°C, %3d power cycles, %s head parks" % (
            device_name, lifetime, temp, power_cycles, head_parks),
    else:
        print "* %-60s %18s %d°C, %3d power cycles, %dTB written" % (
            device_name, lifetime, temp, power_cycles, tbs_written),
    if reallocated_sectors:
        print reallocated_sectors, "sectors reallocated"
    else:
        print