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<div class="moz-cite-prefix">On 06/06/2015 12:49 AM, Mathieu Chateau
wrote:<br>
</div>
<blockquote
cite="mid:CACpSnaKznMb8yYCDoh7T5AxJ==gaue8f6B507q1yUfjGwY=s9A@mail.gmail.com"
type="cite">
<div dir="ltr">Hello,
<div><br>
</div>
<div>sorry to bother again but I am still facing this issue.</div>
<div><br>
</div>
<div>client still looks on the "other side" and not using the
node declared in fstab:</div>
<div>prd-sta-sto01:/gluster-preprod
/mnt/gluster-preprod glusterfs
defaults,_netdev,backupvolfile-server=prd-sta-sto02 0 0<br>
</div>
<div><br>
</div>
<div>I expect client to use sto01 and not sto02 as it's
available.</div>
</div>
</blockquote>
<br>
Hi Mathieu,<br>
When you do lookups (`ls` etc), they are sent to both bricks of the
replica. If you write to a file, the write is also sent to both
bricks. This is how it works. Only reads are served from the local
brick.<br>
-Ravi<br>
<br>
<blockquote
cite="mid:CACpSnaKznMb8yYCDoh7T5AxJ==gaue8f6B507q1yUfjGwY=s9A@mail.gmail.com"
type="cite">
<div dir="ltr">
<div><br>
</div>
<div>If I add a static route to break connectivity to sto02 and
do a "df", I have around 30s before it works.</div>
<div>Then it works ok.</div>
<div><br>
</div>
<div>Questions:</div>
<div>
<ul>
<li>How to force node to stick as possible with one specific
(local) node ?</li>
<li>How to know where a client is currently connected?</li>
</ul>
<div>Thanks for your help :)</div>
</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div class="gmail_signature">Cordialement,<br>
Mathieu CHATEAU<br>
<a moz-do-not-send="true" href="http://www.lotp.fr"
target="_blank">http://www.lotp.fr</a></div>
</div>
<br>
<div class="gmail_quote">2015-05-11 7:26 GMT+02:00 Mathieu
Chateau <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:mathieu.chateau@lotp.fr" target="_blank">mathieu.chateau@lotp.fr</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div dir="ltr">Hello,
<div><br>
</div>
<div>thanks for helping :)</div>
<div><br>
</div>
<div>If gluster server is rebooted, any way to make client
failback on node after reboot ?</div>
<div><br>
</div>
<div>How to know which node is using a client ? I see TCP
connection to both node </div>
<div><br>
</div>
<div>Regards,</div>
</div>
<div class="gmail_extra"><br clear="all">
<div>
<div>Cordialement,<br>
Mathieu CHATEAU<br>
<a moz-do-not-send="true" href="http://www.lotp.fr"
target="_blank">http://www.lotp.fr</a></div>
</div>
<div>
<div class="h5">
<br>
<div class="gmail_quote">2015-05-11 7:13 GMT+02:00
Ravishankar N <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:ravishankar@redhat.com"
target="_blank">ravishankar@redhat.com</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF"><span> <br>
<br>
<div>On 05/10/2015 08:29 PM, Mathieu Chateau
wrote:<br>
</div>
<blockquote type="cite">
<div dir="ltr">Hello,
<div><br>
</div>
<div>Short way: Is there any way to define
a preferred Gluster server ?<br>
<div><br>
</div>
<div>Long way:</div>
<div>I have the following setup (version
3.6.3) :</div>
<div><br>
</div>
<div>Gluster A <==> VPN
<==> Gluster B</div>
<div><br>
</div>
<div>Volume is replicated between A and
B.</div>
<div><br>
</div>
<div>They are in same datacenter, using
a 1Gb/s connection, low latency
(0.5ms)</div>
<div><br>
</div>
<div>I have gluster clients in lan A
& B.</div>
<div><br>
</div>
<div>When doing a "ls" on big folder
(~60k files), both gluster node are
used, and so it need 9mn instead on
1mn if only the local gluster is
reachable.</div>
<div><br>
</div>
</div>
</div>
</blockquote>
<br>
</span> Lookups (and writes of course) from
clients are sent to both bricks because AFR
uses the result of the lookup to select which
brick to read from if there is a pending heal
etc.<br>
If the file is clean on both A and B, then reads
are always served from the local brick. i.e.
reads on clients mounted on A will be served
from the brick in A (and likewise for B).<br>
<br>
Hope that helps,<br>
Ravi<br>
<br>
<br>
<blockquote type="cite"><span>
<div dir="ltr">
<div>
<div>It's HA setup, application is
present on both side. I would like a
master/master setup, but using only
local node as possible.</div>
<div><br>
</div>
<div><br clear="all">
<div>
<div>Regards,<br>
Mathieu CHATEAU<br>
<a moz-do-not-send="true"
href="http://www.lotp.fr"
target="_blank">http://www.lotp.fr</a></div>
</div>
</div>
</div>
</div>
<br>
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</span>
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