[MESOS-8251] Introduce a way to resolve the "profile" for disk resources

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.5.0
• Labels: mesosphere storage
• Target Version/s: 1.5.0
• Epic Link: Resource Provider and CSI
• Sprint: Mesosphere Sprint 68, Mesosphere Sprint 69, Mesosphere Sprint 70
• Story Points: 3
• Assignee: Joseph Wu
• Reporter: Joseph Wu
• Shepherd: Jie Yu
• Created: 21/Nov/17 01:29
• Updated: 19/Dec/17 03:54
• Resolved: 19/Dec/17 03:54

Description

This builds off MESOS-8060 which introduced the profile field to disk resources.

A volume profile will consist of a string which maps to a list of VolumeCapability and some free-form parameters (string key-value pairs). See the message CreateVolumeResponse under https://github.com/container-storage-interface/spec/blob/master/csi.proto for more information about the fields.

We will introduce a module which will allow the operator to specify this mapping. Unfortunately, due to the nature of volume profiles, we cannot provide a reasonable "default" mapping of profiles (because we don't have any idea what volumes are available). Instead, there will be two implementations of the module:
1) The default will essentially turn volume profiles off. Any attempt to use volume profiles will simply fail.
2) An optional module will allow the operator to specify a URI (file or link) that contains a JSON representation of the mapping. The module will have some knobs to tune the frequency at which this URI is fetched from.

Issue Links

• is related to: MESOS-8060 Introduce first class 'profile' for disk resources.