[Gluster-users] Xenserver Gluster Storage Repository Question

Scot Hollingsworth scoth at rcsd.ms
Wed Oct 23 02:12:45 UTC 2013

Understand.  So after adding two more servers with the same 275GB I should be doubling the size of my volume, is that correct?


On Oct 22, 2013, at 7:42 PM, Robert Hajime Lanning <lanning at lanning.cc> wrote:

> On 10/22/13 13:58, Scot Hollingsworth wrote:
>> Hi.
>> I've been working with gluster for about a week now.  So far, I can see
>> myself moving off my existing Redhat GFS cluster for gluster.  I'm doing
>> some testing and don't completely understand the client side yet.   Let
>> me explain.   I have two servers both have a brick with 275GB of
>> storage.  Gluster is setup and replicating the files to each node.  I
>> mounted the volume on node1.  I setup a Xenserver and connected to
>> node1.  Creating VMs using the gluster SR on node1 is working.  However,
>> I only see 275GB available on the SR.   Is this because I have volume
>> mounted on a server node?  Should I have a separate client that mounts
>> the volume?  From what I understand the client will still mount 1
>> server.  I do have a few more servers I can add to my gluster.  Before I
>> continue with my setup, I am curious will the Xenserver only see how
>> available storage on the node that it connects to.   I guess I was
>> thinking I would see a volume that has the combined storage capacity not
>> just one disk.
> You have two nodes with one brick on each node.
> You created a volume with "replica 2".
> This means that the two bricks are combined as a mirror.  Anything written to one, is also written to the other.  So, effectively you only have one brick worth of available space.
> If you want to have 550GB of space in the volume, then you need to not specify any replica counts for the volume.
> -- 
> Mr. Flibble
> King of the Potato People
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Scot Hollingsworth
Technology Dept.
Rankin County School District
(601) 825-8626

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