<div dir="ltr"><div>Consider that you have a volume, named vol1. Now you want to have a replica of it, for disaster recovery. What do you do? You will create a new volume, say, repica-vol1 in a different cluster.<br><br>To replicate data from vol1 to replica-vol1, you will set up a geo-rep session between vol1 and replica-vol1. In geo-replication, we call your primary volume vol1 as master. The replicated volume replica-vol1 is called slave. We call it master and slave because you will see unidirectional sync of data from master volume(vol1) to slave volume(replica-vol1).<br></div><div><br></div><div>Hope this helps.<br></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Thu, 15 Aug 2019, 3:35 am richard lucassen, <<a href="mailto:mailinglists@lucassen.org" target="_blank">mailinglists@lucassen.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">On Wed, 14 Aug 2019 20:24:53 +0530<br>
Aravinda Vishwanathapura Krishna Murthy <<a href="mailto:avishwan@redhat.com" rel="noreferrer" target="_blank">avishwan@redhat.com</a>> wrote:<br>
<br>
> > > If Master and Slave Volumes are in<br>
> > > the same cluster then it is not so helpful when disaster happens.<br>
> ><br>
> > So, do I need to do something like this?:<br>
> ><br>
> > cluster volume name: gvol0<br>
> > replication vol name: rep-gvol0<br>
> <br>
> Volume names can be kept as your convenience.<br>
<br>
The doc is quite unclear for me as a gluster newbie. It's the old Linux<br>
paradox: the moment that you will understand the docs is the moment<br>
that you don't need them anymore.<br>
<br>
Why is there a MASTER_VOL and a SLAVE_VOL? If I have a volume called<br>
"gvol0" it seems logical to me that the geo-replication slave server<br>
also uses this volume name "gvol0". The geo-replication server knows it<br>
is not part of the active cluster because it was told to do so.<br>
<br>
OTOH, I think there must be an obvious reason for this MASTER_VOL and<br>
SLAVE_VOL, but I don't understand this from the docs.<br>
<br>
R.<br>
<br>
-- <br>
richard lucassen<br>
<a href="http://contact.xaq.nl/" rel="noreferrer noreferrer" target="_blank">http://contact.xaq.nl/</a><br>
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</blockquote></div>