[MESOS-9388] Add the capability to specify min/max disk size range for a profile.

• Type: Improvement
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Component/s: storage
• Labels: mesosphere mesosphere-dss-post-ga storage
• Epic Link: Improve experience of operating CSI plugins
• Story Points: 5
• Assignee: Unassigned
• Reporter: Chun-Hung Hsiao
• Created: 14/Nov/18 21:56
• Updated: 26/Apr/19 11:54

Description

Since CSI plugins run mkfs lazily when a volume is first published on an agent, it is possible that a CSI plugin allows a framework to create a volume of size that is too small or too large for the target filesystem when the framework issues a CREATE_DISK, but the volume cannot be used by any task since all tasks will fail because the volume cannot be published.

To avoid this and improve user experience, we could extend the module interface of the disk profile adaptor to specify a min/max size range for a given profile, so Mesos can validate the size upfront.