<div dir="auto">You have to specify the correct order of brick forming the same replica set<div dir="auto"><br></div><div dir="auto">In example:</div><div dir="auto"><br></div><div dir="auto">host1:brick1 host2:brick2 host3:brick3 host1:brick4 host2:brick5 host3:brick6</div><div dir="auto"><br></div><div dir="auto">What you did is forming a replica set with all bricks on the same host, thus an host failure will bring your cluster down</div></div><div class="gmail_extra"><br><div class="gmail_quote">Il 4 apr 2017 8:27 PM, "Valerio Luccio" <<a href="mailto:valerio.luccio@nyu.edu">valerio.luccio@nyu.edu</a>> ha scritto:<br type="attribution"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div bgcolor="#FFFFFF" text="#000000">
<p>I apologize if this has been answered before, I haven't found a
satisfying explanation.<br>
</p>
I've just set up a new gluster. We have 4 servers and each has 3
RAIDS with separate raid controller. I wanted to create one giant
data space and tried:<br>
<blockquote><tt>$ gluster volume create Data replica 2 transport tcp
host1:/brick1/data host1:/brick2/data host1:/brick3/data [...]
host4:/brick3/data<br>
</tt></blockquote>
This gave me the error message:<tt><br>
</tt>
<blockquote><tt>volume create: MRIData: failed: Multiple bricks of a
replicate volume are present on the same server. This setup is
not optimal. Use 'force' at the end of the command if you want
to override this behavior.<br>
</tt></blockquote>
The 'force' option allowed me to create a volume and everything
seems to work. The question is, whys is this not optimal ? What are
the potential pitfalls ? I don't want to find myself with an
unusable data space.<br>
Also, does it make a difference the order in which I specify the
bricks ?<br>
<br>
Thanks,<br>
<pre class="m_4197707421182660019moz-signature" cols="72">--
Valerio Luccio <a href="tel:(212)%20998-8736" value="+12129988736" target="_blank">(212) 998-8736</a>
Center for Brain Imaging 4 Washington Place, Room 158
New York University New York, NY 10003
"In an open world, who needs windows or gates ?"</pre>
</div>
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