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Purpose

Add the ability to increase change Data Volume size after it has been created.

Feature Specifications

CloudStack controls volume size via disk offerings. This allows the CloudStack admin to choose what he/she wants to make available to end-users. As such, volume resize will be allowed between disk offerings with the same storage tag. for example, if an admin has defined a 5GB and a 10GB disk offering, a user can upgrade from the 5GB to the 10GB. If the admin has made a custom-sized disk offering available, then resize will work simply by specifying a new, larger size. Additionally, a data volume can be moved from a static disk offering to a custom disk offering with the size specified. This model allows those who may be billing by certain volume sizes/disk offerings to stick to that model, while allowing flexibility to migrate to whatever custom size necessary.

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