Tools Guide

First, make sure that PyU4V is installed as directed in the Installation Guide. Then visit the Quick Start Guide to make sure you have secure connectivity to your array.

OpenStack

Description

This script facilitates the seamless(live) migration of volumes from the SMIS masking view structure to the REST masking view structure introduced in Pike. This is only applicable if you have existing volumes created in Ocata or an earlier release.

Important

Running this script is not necessary unless you intend ‘Live Migrating’ from one compute node to another.

Pre-requisites

  1. The OpenStack system must first be successfully upgraded to Pike or a post Pike release.

  2. All your existing compute nodes must be online.

  3. Avoid executing any cinder operations when running migrate.py python script.

  4. Avoid Unisphere for PowerMax upgrades or VMAX / PowerMAX OS upgrades when running migrate.py python script.

Recommendations

  1. It is recommended to create a test instance in OpenStack to force a creation of a masking view on the array. When you run the script it should move the volumes to the child storage group associated with that volume type. If it does not and it creates a masking view or storage group with a slightly different name then please file a bug on the GitHub issues page for this project.

  2. It is also recommended to move one volume first and verify it has been moved to the correct storage group within the correct masking view.

  3. If in any doubt, please file an issue on the GitHub issues page for this project issues.

The script can be run using python 2.7, python3.6 and python 3.7. It is recommended you run from the PyU4V base directory, however you can run from the ‘openstack’ directory so long as you copy/create PyU4V.conf in that directory.

$ alias python3='/usr/bin/python3.7'
$ cd $PYU4V_WORKING_DIR
$ python3 PyU4V/tools/openstack/migrate.py

$ alias python3='/usr/bin/python3.7'
$ cp ./PyU4V.conf $PYU4V_WORKING_DIR/PyU4V/tools/openstack/.
$ cd $PYU4V_WORKING_DIR/PyU4V/tools/openstack
$ python3 migrate.py

Warning

Python 2.7 has reached EOL however is referenced here due to the existence old environments which may still be running Python 2.7.

Note

  • Only masking views that are eligible for migrating will be presented.

  • You have the option to migrate all volume’s or a subset of volumes, in a storage group.

  • The old masking view and storage group will remain even if all volumes have been migrated, so you can always move them back if in any doubt.

  • The new masking view will contain the same port group and initiator group as the original.

  • If you find any issues, please open them on the GitHub issues page for this project issues.