hemna

 def initialize_connection(self, volume, connector, initiator_data=None):
        """Allow connection to connector and return connection info.

        :param volume: The volume to be attached.
        :param connector: Dictionary containing information about what is being
                          connected to.
        :param initiator_data: (Optional) A dictionary of driver_initiator_data
                               objects with key-value pairs that have been
                               saved for this initiator by a driver in previous
                               initialize_connection calls.

hemna

# Test script to test using asyncio to
# Tail a direwolf logfile looking for RX/TX APRS packets
# and then convert those to APRSD Packet objects.
#
#
# 1) create virtualenv
   # python -m venv .venv
# 2) source venv
   # source .venv/bin/activate
# 3) install aprsd and async_tail

hemna

mkdir tmp
export TMPDIR=~/tmp

# rust is no longer needed with no dep on python cryptography
# curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh



#
# python 3.9.x has asyncio problems which causes kiss interfaces to fail.

hemna

# !/bin/bash

# Step 1. Install pyenv

git clone https://github.com/pyenv/pyenv.git ~/.pyenv
echo 'export PYENV_ROOT="$HOME/.pyenv"' >> ~/.bashrc
echo 'export PATH="$PYENV_ROOT/bin:$PATH"' >> ~/.bashrc
echo -e 'if command -v pyenv 1>/dev/null 2>&1; then\n  eval "$(pyenv init -)"\nfi' >> ~/.bashrc
source ~/.bashrc

hemna

(.venv) waboring@devstack-train:~/cinder:(git::capacity_corrections) $  pylint cinder/tests/unit/scheduler/test_host_filters.py
************* Module cinder.tests.unit.scheduler.test_host_filters
cinder/tests/unit/scheduler/test_host_filters.py:38:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
cinder/tests/unit/scheduler/test_host_filters.py:55:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
cinder/tests/unit/scheduler/test_host_filters.py:1013:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)
cinder/tests/unit/scheduler/test_host_filters.py:1105:4: W0107: Unnecessary pass statement (unnecessary-pass)
cinder/tests/unit/scheduler/test_host_filters.py:1226:8: R1725: Consider using Python 3 style super() without arguments (super-with-arguments)

-----------------------------------
Your code has been rated at 9.93/10

hemna

def calculate_capacity_factors(total_capacity, free_capacity, provisioned_capacity,
                               thin_provisioning_support, max_over_subscription_ratio,
                               reserved_percentage, thin):
    """Create the various factors of the a particular backend.

    Based off of definition of terms:
        https://specs.openstack.org/openstack/cinder-specs/specs/queens/provisioning-improvements.html


    total_capacity - The reported total capacity in the backend.

hemna

    def calculate_virtual_free_capacity(total_capacity,
                                        free_capacity,
                                        provisioned_capacity,
                                        thin_provisioning_support,
                                        max_over_subscription_ratio,
                                        reserved_percentage,
                                        thin):
        """Calculate the virtual free capacity based on thin provisioning support.
        :param total_capacity:  total_capacity_gb of a host_state or pool.
        :param free_capacity:   free_capacity_gb of a host_state or pool.

hemna

filler

hemna

Cinder has calculations in the capacity filter and the Capacity weigher for determining how much free space there is.
https://github.com/openstack/cinder/blob/master/cinder/scheduler/filters/capacity_filter.py#L108-L159
and
https://github.com/openstack/cinder/blob/master/cinder/scheduler/weights/capacity.py#L118-L125

These 2 mechanisms turn up to having different values.

Take my pool stats of
Total Capacity                    156871
Allocated Capacity                144553

hemna

aprs:
    # Set enabled to False if there is no internet connectivity.
    # This is useful for a direwolf KISS aprs connection only.

    # Get the passcode for your callsign here:
    # https://apps.magicbug.co.uk/passcode
    enabled: true
    host: rotate.aprs2.net
    login: CALLSIGN
    password: '00000'