Migrate Upgrade

This module provides drush support for upgrading from Drupal 6 or 7 to Drupal 8. The plan is for this drush support to be added to drush itself at some point, at which point this module will become obsolete.

Versions

Because the core migration system has been experimental thus far in Drupal 8, there have been core API changes in each minor version of Drupal requiring different versions of migration modules to maintain compatibility.

1. 8.x-3.x: This branch works with Drupal 8.2.x and above.
2. 8.x-2.0: This release works only with Drupal 8.1.x. This release is no longer supported.
3. 8.x-1.0: This release works only with Drupal 8.0.x. This release is no longer supported.

Drush

To run a complete upgrade of your legacy Drupal site to the current D8 site:

drush migrate-upgrade --legacy-db-url=mysql://user:pass@12.34.56.78/d6db --legacy-root=http://myd6site.com 

You can also add a --configure-only option, which instead of running the migration will generate migration configuration entities, which may then be edited to customize the migration path and run using the migrate_tools module.

Bug reports

It is important to note that this module only provides the front-end to the upgrade process - if you see a problem with the results of your migration, this is almost certainly an issue with the core framework, and should be reported to the core issue queue with a component of "migration system".