Bug 1575503

Summary:	Cannot edit File mounted via configMap with subPath even after appending defaultMode: 0511
Product:	OpenShift Container Platform	Reporter:	Madhusudan Upadhyay <maupadhy>
Component:	Storage	Assignee:	Bradley Childs <bchilds>
Status:	CLOSED NOTABUG	QA Contact:	Jianwei Hou <jhou>
Severity:	urgent	Docs Contact:
Priority:	unspecified
Version:	3.7.0	CC:	aos-bugs, aos-storage-staff, jliggitt, jokerman, mmccomas
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Hardware:	Unspecified
OS:	Linux
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Last Closed:	2018-05-07 17:40:09 UTC	Type:	Bug
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Description Madhusudan Upadhyay 2018-05-07 06:51:32 UTC

Description of problem:

Even after putting defaultMode: 0511 , editing file mounted via configMap with subPath, permission is denied stating: 'file is read-only'


Version-Release number of selected component (if applicable):

3.7.44

How reproducible:

Always

Steps to Reproduce:
1. Set defaultMode: 0511 (which is translated to 777 on the pod)
2. Mount the file via configMap with Subpath
3. Edit the file(mounted via configMap). 

Actual results:
Cannot edit the file as file is readOnly

Expected results:
Successful edit of the file


Additional info:

Comment 1 Madhusudan Upadhyay 2018-05-07 06:54:23 UTC

Adding a reference Bugzilla for the issue:

https://bugzilla.redhat.com/show_bug.cgi?id=1481617

Comment 2 Madhusudan Upadhyay 2018-05-07 06:54:24 UTC

Adding a reference Bugzilla for the issue:

https://bugzilla.redhat.com/show_bug.cgi?id=1481617

Comment 3 Jordan Liggitt 2018-05-07 17:40:09 UTC

all atomic writer volumes (configmap, secret, projected, and downwardAPI) are always readonly, regardless of default mode or readOnly setting in the API.

see https://github.com/kubernetes/kubernetes/pull/58720