A note about backporting to -em branches: the code is using a feature of oslo_utils.imageutils (the 'format_specific' data member of the QemuImgInfo class) that was introduced in oslo.utils 4.1.0 (ussuri) by Change-Id: I133da07a5a9628b8a. It's not present in train, and further, train supports py2.7, which the oslo.utils 4.x series does not.
A note about backporting to -em branches: the code is using a feature of oslo_utils. imageutils (the 'format_specific' data member of the QemuImgInfo class) that was introduced in oslo.utils 4.1.0 (ussuri) by Change-Id: I133da07a5a9628b8a. It's not present in train, and further, train supports py2.7, which the oslo.utils 4.x series does not.
This only affects the nova and cinder patches.