<div dir="ltr"><div><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif">Hi John,</div></div><div> </div><blockquote style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex" class="gmail_quote"><span style="font-family:arial,sans-serif;font-size:13px">Otherwise you can move to multibackend but you will need to update the hosts column on your existing volumes.</span></blockquote><div class="gmail_default" style="font-family:'trebuchet ms',sans-serif"><span style="font-family:arial,sans-serif;font-size:13px"><br></span></div><div class="gmail_default">For above statement, did you mean a unique backend on separate volume nodes ?</div><div class="gmail_default"><br></div><div class="gmail_default">Will there be any issues, if the enabled_backends are used with each backend tied to particular volume type. Now this configuration is repeated for all volume nodes. Do we need to be concerned about the host entry ?</div><div class="gmail_default"><br></div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature"><div dir="ltr"><div><font style="background-color:rgb(255,255,255)" color="#000000" face="trebuchet ms, sans-serif">Regards,</font></div><font style="background-color:rgb(255,255,255)" color="#000000" face="trebuchet ms, sans-serif">Amit</font><div><a href="http://www.cloudbyte.com/" target="_blank"><font style="background-color:rgb(255,255,255)" color="#0000ff" face="trebuchet ms, sans-serif"><i>CloudByte Inc.</i></font></a></div></div></div></div>
<br><div class="gmail_quote">On Mon, Jan 19, 2015 at 4:14 AM, John Griffith <span dir="ltr"><<a href="mailto:john.griffith@solidfire.com" target="_blank">john.griffith@solidfire.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5"><p dir="ltr"><br>
On Jan 16, 2015 9:03 PM, "mad Engineer" <<a href="mailto:themadengin33r@gmail.com" target="_blank">themadengin33r@gmail.com</a>> wrote:<br>
><br>
> Hello All,<br>
> i am working on integrating VNX with cinder,i have plan<br>
> to add another NFS storage in the future,without removing VNX.<br>
><br>
> Can i add another backend while first backend is running without<br>
> causing problem to running volumes.<br>
> I heard that multiple backend is supported,<br>
><br>
> thanks for any help<br>
><br>
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</div></div><p dir="ltr">So as long as you used the "enabled backend" format in your existing config you "should" be able to just add another backend without impacting your existing setup (I've never tried this with NFS/VNX myself though).</p>
<p dir="ltr">If you're not using the enabled backends directive you can deploy a new cinder - volume node and just add your new driver that way. </p>
<p dir="ltr">Otherwise you can move to multibackend but you will need to update the hosts column on your existing volumes.</p>
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