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<div class="moz-cite-prefix">On 04/16/2018 05:15 AM, Thing wrote:<br>
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<blockquote type="cite"
cite="mid:CAJDAmYHGDj7HudW8paNEznwiuUiZ1HQKiOoTKRSVYZyxj8=x5g@mail.gmail.com">
<div dir="ltr">Hi,
<div><br>
</div>
<div>I am on centos 7.4 with gluster 4.</div>
<div><br>
</div>
<div>I am trying to a distributed and replicated volume on the 4
nodes</div>
<div><br>
</div>
<div>I am getting this un-expected qualification,</div>
<div><br>
</div>
<div>
<div>[root@glustep1 brick1]# gluster volume create gv0 replica
2 glusterp1:/bricks/brick1/gv0 glusterp2:/bricks/brick1/gv0
glusterp3:/bricks/brick1/gv0 glusterp4:/bricks/brick1/gv0</div>
<div><br>
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<div>8><----</div>
<div><br>
</div>
<div>Replica 2 volumes are prone to split-brain. Use Arbiter
or Replica 3 to avoid this. See: <a
href="http://docs.gluster.org/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/"
moz-do-not-send="true">http://docs.gluster.org/en/latest/Administrator%20Guide/Split%20brain%20and%20ways%20to%20deal%20with%20it/</a>.</div>
<div>Do you still want to continue?</div>
<div> (y/n) n</div>
</div>
<div><br>
</div>
<div>8><-----</div>
<div><br>
</div>
<div>Looking at both gluster docs and redhat docs this seems
un-expected.</div>
</div>
</blockquote>
<br>
This warning was introduced from glusterfs 3.11 onward to encourage
people to move away from replica 2 and use arbiter (or replica 3)
instead. If you are okay with the split-brain issues inherent in
replica 2, you can still go ahead and create it.<br>
Regards,<br>
Ravi<br>
<blockquote type="cite"
cite="mid:CAJDAmYHGDj7HudW8paNEznwiuUiZ1HQKiOoTKRSVYZyxj8=x5g@mail.gmail.com">
<div dir="ltr">
<div><br>
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<div>regards</div>
<div><br>
</div>
<div>Steven</div>
</div>
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