
This change adds the ability to extend 'in-use' volume. Once the volume size is extended, Nova is informed of the size change through the external-event extension so the virt driver can perform the appropriate actions for the host and guest to detect the new volume size. Tempest related patches: 1. https://review.openstack.org/#/c/480746/ 2. https://review.openstack.org/#/c/480778/ Depends-On: If10cffd0dc4c9879f6754ce39bee5fae1d04f474 Blueprint: extend-attached-volume Co-Authored-By: TommyLike <tommylikehu@gmail.com> APIImpact Change-Id: I60c8ea9eb0bbcfe41f5f0a30ed8dc67bdcab3ebc
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