[MESOS-3857] Draft Design Doc for first Step External Volume MVP

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Labels: mesosphere
• Epic Link: Global Resources.
• Sprint: Mesosphere Sprint 22, Mesosphere Sprint 23
• Story Points: 3
• Assignee: Jörg Schad
• Reporter: Jörg Schad
• Shepherd: Michael Park
• Created: 09/Nov/15 12:55
• Updated: 26/Nov/18 12:22
• Resolved: 26/Nov/18 12:22

Description

As part of the overall design doc for global resources we would like to introduce improvements for Docker Volume Driver isolator module (https://github.com/emccode/mesos-module-dvdi).
Currently the isolator module is controlled by setting environment variables as follows:

 "env": {
  "DVDI_VOLUME_NAME": "testing",
  "DVDI_VOLUME_DRIVER": "platform1",
  "DVDI_VOLUME_OPTS": "size=5,iops=150,volumetype=io1,newfstype=ext4,overwritefs=false",
  "DVDI_VOLUME_NAME1": "testing2",
  "DVDI_VOLUME_DRIVER1": "platform2",
  "DVDI_VOLUME_OPTS1": "size=6,volumetype=gp2,newfstype=xfs,overwritefs=true"
} 

We should develop a more structured way for passing these settings to the isolator module which is in line with the overall goal of global resources.