Comment 0 for bug 1878579

A few case sensitive path comparisons can lead to migration failures. Windows paths are case sensitive and Hyper-V sometimes flips the path casing, affecting some of Nova's logic.

For example, when cold migrating instances between different CSVs, Nova will not update the VHD image paths if the casing is changed, later on failing to import the instance, leading to a migration failure: http://paste.openstack.org/raw/793566/.

In general, the Nova Hyper-V driver performs case insensitive checks. We'll have to fix all the case sensitive ones.