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<div class="moz-cite-prefix">Le 03/03/2016 15:07, Krutika Dhananjay
a écrit :<br>
</div>
<blockquote
cite="mid:1780541265.15735525.1457014076977.JavaMail.zimbra@redhat.com"
type="cite">
<div style="font-family: garamond,new york,times,serif; font-size:
12pt; color: #000000">
<div>Ok, and what version of glusterfs are you using?<br>
</div>
</div>
</blockquote>
At this time I'm using glusterfs 3.6.7 on Debian 8 (64bit), same OS
on servers and clients.<br>
<br>
--<br>
Y.<br>
<blockquote
cite="mid:1780541265.15735525.1457014076977.JavaMail.zimbra@redhat.com"
type="cite">
<div style="font-family: garamond,new york,times,serif; font-size:
12pt; color: #000000">
<div><br>
</div>
<div>-Krutika<br>
</div>
<hr id="zwchr">
<blockquote style="border-left:2px solid
#1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"
data-mce-style="border-left: 2px solid #1010FF; margin-left:
5px; padding-left: 5px; color: #000; font-weight: normal;
font-style: normal; text-decoration: none; font-family:
Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Yannick
Perret" <a class="moz-txt-link-rfc2396E" href="mailto:yannick.perret@liris.cnrs.fr"><yannick.perret@liris.cnrs.fr></a><br>
<b>To: </b>"Krutika Dhananjay" <a class="moz-txt-link-rfc2396E" href="mailto:kdhananj@redhat.com"><kdhananj@redhat.com></a><br>
<b>Cc: </b><a class="moz-txt-link-abbreviated" href="mailto:gluster-users@gluster.org">gluster-users@gluster.org</a><br>
<b>Sent: </b>Thursday, March 3, 2016 7:23:09 PM<br>
<b>Subject: </b>Re: [Gluster-users] Per-client prefered
server?<br>
<div><br>
</div>
<div class="moz-cite-prefix">Le 03/03/2016 13:18, Krutika
Dhananjay a écrit :<br>
</div>
<blockquote
cite="mid:1490899275.15722353.1457007509505.JavaMail.zimbra@redhat.com">
<div style="font-family: garamond,new york,times,serif;
font-size: 12pt; color: #000000"
data-mce-style="font-family: garamond,new
york,times,serif; font-size: 12pt; color: #000000;">
<div>What does "nearest" storage server mean? Are the
clients residing in the storage pool too? Or are they
external to the cluster?<br>
</div>
<div><br>
</div>
</div>
</blockquote>
They are external.<br>
Nearest means that they are in the same building, linked by
the same switch. Machines in the other building are rooted via
some more equipments.<br>
<br>
--<br>
Y.<br>
<blockquote
cite="mid:1490899275.15722353.1457007509505.JavaMail.zimbra@redhat.com">
<div style="font-family: garamond,new york,times,serif;
font-size: 12pt; color: #000000"
data-mce-style="font-family: garamond,new
york,times,serif; font-size: 12pt; color: #000000;">
<div>-Krutika<br>
</div>
<hr id="zwchr">
<blockquote style="border-left:2px solid
#1010FF;margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"
data-mce-style="border-left: 2px solid
#1010FF; margin-left: 5px; padding-left: 5px; color:
#000; font-weight: normal; font-style: normal;
text-decoration: none; font-family:
Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"Yannick
Perret" <a moz-do-not-send="true"
class="moz-txt-link-rfc2396E"
href="mailto:yannick.perret@liris.cnrs.fr"
target="_blank"
data-mce-href="mailto:yannick.perret@liris.cnrs.fr"><yannick.perret@liris.cnrs.fr></a><br>
<b>To: </b><a moz-do-not-send="true"
class="moz-txt-link-abbreviated"
href="mailto:gluster-users@gluster.org"
target="_blank"
data-mce-href="mailto:gluster-users@gluster.org">gluster-users@gluster.org</a><br>
<b>Sent: </b>Thursday, March 3, 2016 5:38:33 PM<br>
<b>Subject: </b>[Gluster-users] Per-client prefered
server?<br>
<div><br>
</div>
Hello,<br>
<div><br>
</div>
I can't find if it is possible to set a prefered server
on a per-client <br>
basis for replica volumes, so I ask the question here.<br>
<div><br>
</div>
The context: we have 2 storage servers, each in one
building. We also <br>
have several virtual machines on each building, and they
can migrate <br>
from one building to an other (depending on load,
maintenance…).<br>
<div><br>
</div>
So (for testing at this time) I setup a x2 replica
volume, one replica <br>
on each storage server of course. As most of our volumes
are "many reads <br>
- few writes" it would be better for bandwidth that each
client uses the <br>
"nearest" storage server (local building switch) - for
reading, of <br>
course. The 2 buildings have a good netlink but we
prefer to minimize - <br>
when not needed - data transferts beetween them (this
link is shared).<br>
<div><br>
</div>
Can you see a solution for this kind of tuning? As far
as I understand <br>
geo-replica is not really what I need, no?<br>
<div><br>
</div>
It exists "cluster.read-subvolume" option of course but
we can have <br>
clients on both building so a per-volume option is not
what we need. An <br>
per-client equivalent of this option should be nice.<br>
<div><br>
</div>
I tested by myself a small patch to perform this - and
it seems to work <br>
fine as far as I can see - but 1. before continuing in
this way I would <br>
first check if it exists an other way and 2. I'm not
familiar with the <br>
whole code so I'm not sure that my tests are in the
"state-of-the-art" <br>
for glusterfs.<br>
<div><br>
</div>
Thanks in advance for any help.<br>
<div><br>
</div>
Regards,<br>
--<br>
Y.<br>
<div><br>
</div>
<br>
<div><br>
</div>
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