[Bugs] [Bug 1569256] New: Unable to create gluster volume

[bugzilla at redhat.com]

https://bugzilla.redhat.com/show_bug.cgi?id=1569256

            Bug ID: 1569256
           Summary: Unable to create gluster volume
           Product: GlusterFS
           Version: 4.0
         Component: libglusterfsclient
          Severity: medium
          Assignee: bugs at gluster.org
          Reporter: thing.thing at gmail.com
                CC: bugs at gluster.org



Description of problem:

Following documentation and I get this un-expected qualification that according
to docs isnt what I expect.

===========
[root at glustep1 ~]# gluster volume create gv0 replica 2
glusterp1:/bricks/brick1/gv0 glusterp2:/bricks/brick1/gv0
glusterp3:/bricks/brick1/gv0 glusterp4:/bricks/brick1/gv0
Replica 2 volumes are prone to split-brain. Use Arbiter or Replica 3 to avoid
this. See:
http://docs.gluster.org/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/.
Do you still want to continue?
 (y/n) n

Usage:
volume create <NEW-VOLNAME> [stripe <COUNT>] [replica <COUNT> [arbiter
<COUNT>]] [disperse [<COUNT>]] [disperse-data <COUNT>] [redundancy <COUNT>]
[transport <tcp|rdma|tcp,rdma>] <NEW-BRICK>?<vg_name>... [force]

[root at glustep1 ~]# rpm -q glusterfs
glusterfs-4.0.1-1.el7.x86_64
[root at glustep1 ~]# gluster peer status
Number of Peers: 3

Hostname: glusterp3
Uuid: cb60017a-003c-43d7-b94c-7e44072fad74
State: Peer in Cluster (Connected)

Hostname: glusterp2
Uuid: c869b8cc-fafa-45ca-b189-beb8fa444b3b
State: Peer in Cluster (Connected)

Hostname: glusterp4
Uuid: b6a3927f-be5d-4fb6-af56-d1f5c7412050
State: Peer in Cluster (Connected)
[root at glustep1 ~]# 
========

So this since the user group does not know is either a bug or an error in or
unclear documentation.

Version-Release number of selected component (if applicable):
(centos 7.4)
glusterfs-4.0.1-1.el7.x86_64

How reproducible:
everytime

Steps to Reproduce:
Build 4 nodes as per,
https://wiki.centos.org/SpecialInterestGroup/Storage/gluster-Quickstart

1. run command as above in attempting to make a distributed-replicated volume
as following documentation,
https://access.redhat.com/documentation/en-US/Red_Hat_Storage/2.1/html/Administration_Guide/sect-User_Guide-Setting_Volumes-Distributed_Replicated.html
"Example 6.5. Four Node Distributed Replicated Volume with a Two-way
Replication"

also this document,
https://www.howtoforge.com/distributed-replicated-storage-across-four-storage-nodes-with-glusterfs-3.2.x-on-ubuntu-12.10

also,
https://docs.gluster.org/en/latest/Administrator%20Guide/Setting%20Up%20Volumes/

2.
3.

Actual results:

message as above

Expected results:
gv0 is made.

Additional info:

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