Generate alert if the drive storage is low

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Release Time

12/14/2017

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Update Time

02/18/2025

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Hi,Please refer the below script to monitor the low disk storage.

When storage space goes low in any of the local disk means, immediately alert is generated mentioning that particular disk in your pc is running out of storage.

Please refer to the wiki guide for how to use the custom monitoring scripts:

https://help.xcitium.com/topic-399-1-786-15345-Monitors-for-Windows-Devices.html#add_monitor_custom_procedure

PYTHON SCRIPT FILE SHA1 VALUE - fd3e8976606bc477d246fff9a232a7bc22a7aefa

JSON FILE SHA1 VALUE - c4e7f786e1d5554666742140a05091fbc19339b5

Procedure's Instructions

import sys
import os
import re

def alert(arg):
    """Send an alert with a specific argument."""
    sys.stderr.write("%d%d%d\n" % (arg, arg, arg))

def humanbytes(B):
    """Return the given bytes as a human-friendly KB, MB, GB, or TB string."""
    B = float(B)
    KB = 1024
    MB = KB ** 2
    GB = KB ** 3
    TB = KB ** 4

if B < KB:
        return '{0} {1}'.format(B, 'Bytes' if B != 1 else 'Byte')
    elif B < MB:
        return '{0:.2f} KB'.format(B / KB)
    elif B < GB:
        return '{0:.2f} MB'.format(B / MB)
    elif B < TB:
        return '{0:.2f} GB'.format(B / GB)
    else:
        return '{0:.2f} TB'.format(B / TB)

p = 0  # This constant will contain the result, transferred into the alert return value

try:
    # Detect local drives using `wmic` and regex
    detected_drives = os.popen('wmic logicaldisk get description,name | findstr "Local"').read()
    local_drives = re.findall(r'[A-Z]:', detected_drives)

if not local_drives:
        print "No local drives detected."
        alert(0)
        sys.exit(0)

for j in local_drives:
        cmd = os.popen('fsutil volume diskfree ' + j).read()
        print "Debug - Output of `fsutil` for drive {}:\n{}".format(j, cmd)  # Debugging the command output

# Updated regex to handle commas
        total_space_match = re.search(r'Total\s+bytes\s+:\s+([\d,]+)', cmd)
        free_space_match = re.search(r'Total\s+free\s+bytes\s+:\s+([\d,]+)', cmd)

if not total_space_match or not free_space_match:
            print "Failed to parse disk space for drive:", j
            continue

# Remove commas from the matched values and convert to integers
        total_space = int(total_space_match.group(1).replace(',', ''))
        free_space = int(free_space_match.group(1).replace(',', ''))

threshold = 5 * (total_space / 100)  # 5% threshold

print "Total size of the local disk {}: {}".format(j, humanbytes(total_space))
        print "Free space in the local disk {}: {}".format(j, humanbytes(free_space))

if free_space <= threshold:
            print "Low storage alert in local disk {}.".format(j)
            p = 1

except Exception as e:
    print "An error occurred:", str(e)
    alert(1)
    sys.exit(1)

# Send alert based on the flag
if p:
    alert(1)
else:
    alert(0)

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