analyse_disk_usage.py

def check_usage(fs_to_check):
    print(f"Checking usage of partition {fs_to_check}")
    partition_usage = float(subprocess.check_output('df -h ' + fs_to_check + ' | tail -1 | awk \'{sub("%","");print $5}\'', shell=True).decode('ascii'))
    return partition_usage

def get_current_partition_size(fs_to_check):
    print(f"Getting current partition size {fs_to_check}")
    partition_size = float(subprocess.check_output('df -h ' + fs_to_check + ' | tail -1 | awk \'{gsub("G","");print $2}\'', shell=True).decode('ascii'))
    return partition_size

def calculate_value_to_provision(fs_to_increase, minimum_percentage):
    current_fs_size = float(subprocess.check_output('df -h ' + fs_to_increase + ' | tail -1 | awk \'{gsub("G","");print $2}\'', shell=True).decode('ascii'))
    current_fs_usage = float(subprocess.check_output('df -h ' + fs_to_increase + ' | tail -1 | awk \'{gsub("G","");print $3}\'', shell=True).decode('ascii'))
    space_to_add = int(ceil(float((current_fs_usage / minimum_percentage * 100) - current_fs_size)))
    if space_to_add < 5:
        space_to_add = 5
    print(f'If we want to increase FS {fs_to_increase} to have minimum {minimum_percentage}% used, we need to add {space_to_add}G to the partition')
    return int(space_to_add + current_fs_size)