Bug 1730082 - update documentation to make note regarding devicemapper and/or adding a known issues section
Summary: update documentation to make note regarding devicemapper and/or adding a know...
Status: NEW
Alias: None
Product: OpenShift Container Platform
Classification: Red Hat
Component: Documentation
Version: 3.11.0
Hardware: Unspecified
OS: Unspecified
Target Milestone: ---
: ---
Assignee: Red Hat CloudForms Documentation
QA Contact: Red Hat CloudForms Documentation
Red Hat CloudForms Documentation
Depends On:
TreeView+ depends on / blocked
Reported: 2019-07-15 19:05 UTC by coberry
Modified: 2019-07-23 07:01 UTC (History)
5 users (show)

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Description coberry 2019-07-15 19:05:03 UTC
Document URL: https://docs.openshift.com/container-platform/3.11/install/host_preparation.html#configuring-docker-storage

Section Number and Name: Configuring Docker Storage

Describe the issue: documentation does not add a note to warn regarding known issues regarding utilizing devicemapper as using devicemapper gets error:

"Error starting daemon: error initializing graphdriver: devmapper: Unable to take ownership of thin-pool (docker--vg-docker--pool) that already has used data blocks' error"

Suggestions for improvement: Add a section for known issues with the types 
[known issues]
devicemapper has problems initializing graphdriver as it is unable to take ownership of thin-pool

Add a recommendation to use overlay2 by default.

Additional information: 
Case #02422021

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