[MESOS-8121] Unified Containerizer Auto backend should check xfs ftype for overlayfs backend.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.5.0
• Component/s: containerization
• Labels: backend provisioner
• Epic Link: Unified Container
• Sprint: Mesosphere Sprint 67
• Story Points: 3
• Assignee: Meng Zhu
• Reporter: Gilbert Song
• Shepherd: Gilbert Song
• Created: 20/Oct/17 21:20
• Updated: 30/Nov/17 00:44
• Resolved: 30/Nov/17 00:44

Description

when using xfs as the backing filesystem in unified containerizer, the `ftype` has to be equal to 1 if we are using the overlay fs backend. we should add the detection in auto backend logic because some OS (like centos 7.2) has xfs ftype=0 by default.

https://docs.docker.com/engine/userguide/storagedriver/overlayfs-driver/