Bug 798877

Summary:	[FEAT] option to create a read-only volume
Product:	[Community] GlusterFS	Reporter:	Amar Tumballi <amarts>
Component:	glusterd	Assignee:	Amar Tumballi <amarts>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Rahul Hinduja <rhinduja>
Severity:	medium	Docs Contact:
Priority:	medium
Version:	mainline	CC:	gluster-bugs, grajaiya, vraman
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	glusterfs-3.4.0	Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2013-07-24 17:40:53 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:	glusterfs-3.3.0qa45-1.el6.x86_64	Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:
Bug Depends On:
Bug Blocks:	817967

Description Amar Tumballi 2012-03-01 07:20:34 UTC

Description of problem:
Currently, one can make a mount point which is 'ro' (through -oro for mount, or --read-only for glusterfs process), but there is no way one can make a volume readonly, ie, whatever a volume exports itself is readonly.

Comment 1 Anand Avati 2012-03-14 10:37:23 UTC

CHANGE: http://review.gluster.com/2915 (mgmt/glusterd: provide an option to make a volume read-only) merged in master by Vijay Bellur (vijay)

Comment 2 Gowrishankar Rajaiyan 2012-05-31 06:29:12 UTC

Node 1:
[root@dhcp201-221 ~]# gluster volume set test2 read-only on
Set volume successful
[root@dhcp201-221 ~]# 

Node 2:
[root@dhcp201-214 ~]# mount -t glusterfs dhcp201-221.englab.pnq.redhat.com:test2 /export/mount/shanks2
[root@dhcp201-214 ~]# cd /export/mount/shanks2
[root@dhcp201-214 shanks2]# touch a
touch: cannot touch `a': Read-only file system
[root@dhcp201-214 shanks2]# 
[root@dhcp201-214 ~]# umount /export/mount/shanks2

Node 1:
[root@dhcp201-221 ~]# gluster volume set test2 read-only off
Set volume successful
[root@dhcp201-221 ~]# gluster volume stop test2
Stopping volume will make its data inaccessible. Do you want to continue? (y/n) y
Stopping volume test2 has been successful
[root@dhcp201-221 ~]# gluster volume start test2
Starting volume test2 has been successful
[root@dhcp201-221 ~]# 

Node 2:
[root@dhcp201-214 ~]# mount -t glusterfs dhcp201-221.englab.pnq.redhat.com:test2 /export/mount/shanks2
[root@dhcp201-214 ~]# 
[root@dhcp201-214 ~]# cd /export/mount/shanks2
[root@dhcp201-214 shanks2]# touch a
[root@dhcp201-214 shanks2]# ls -l
total 4
-rw-r--r--. 1 root root 0 May 31 04:55 a
[root@dhcp201-214 shanks2]# 

Verified in version: glusterfs-3.3.0qa45-1.el6.x86_64