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<div class="moz-cite-prefix">Heh, thanks Krutika.<br>
<br>
<br>
I believe its pretty much there, have been stress testing it on
our production VM cluster for weeks, though not with critical
VM's. It is a huge improvement when for the heal process when
dealing with large VM's. Failure modes have been very reliable to.<br>
<br>
Nb. All my testing has been VM's - e.g a few large files with only
one process accessing them. I can't speak to the many thousands of
dirs/files use case.<br>
<br>
<br>
If you are using it for VM hosting (as you are) then it is
essential that you set the "virt" group properties, other wise you
will end up with VM corruption. These are the settings I've
evolved over my testing:<br>
<br>
<tt><br>
</tt><br>
<blockquote><tt>Options Reconfigured:</tt><br>
<tt>performance.readdir-ahead: off</tt><br>
<tt>features.shard: on</tt><br>
<tt>features.shard-block-size: 512MB</tt><br>
<tt>cluster.self-heal-window-size: 256</tt><br>
<tt>server.event-threads: 4</tt><br>
<tt>client.event-threads: 4</tt><br>
<tt>cluster.quorum-type: auto</tt><br>
<tt>cluster.server-quorum-type: server</tt><br>
<tt>performance.low-prio-threads: 32</tt><br>
<tt>performance.io-thread-count: 32</tt><br>
<tt>performance.cache-refresh-timeout: 4</tt><br>
<tt>nfs.disable: on</tt><br>
<tt>nfs.addr-namelookup: off</tt><br>
<tt>nfs.enable-ino32: off</tt><br>
<tt>performance.write-behind: off</tt><br>
<tt>performance.strict-write-ordering: on</tt><br>
<tt>performance.stat-prefetch: off</tt><br>
<tt>performance.quick-read: off</tt><br>
<tt>performance.read-ahead: off</tt><br>
<tt>performance.io-cache: off</tt><br>
<tt>cluster.eager-lock: enable</tt><br>
<tt>network.remote-dio: enable</tt><br>
<tt>cluster.data-self-heal-algorithm: full</tt><br>
</blockquote>
<br>
<br>
<br>
On 21/01/16 02:06, Krutika Dhananjay wrote:<br>
</div>
<blockquote
cite="mid:362470944.7111136.1453305978918.JavaMail.zimbra@redhat.com"
type="cite">
<div style="font-family: garamond,new york,times,serif; font-size:
12pt; color: #000000">
<div>Adding Lindsay Mathieson, who has tested sharding with VM
store extensively. :)<br>
</div>
<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>"Bello
Florent" <a class="moz-txt-link-rfc2396E" href="mailto:florent.bello@ville-kourou.fr"><florent.bello@ville-kourou.fr></a><br>
<b>To: </b><a class="moz-txt-link-abbreviated" href="mailto:gluster-users@gluster.org">gluster-users@gluster.org</a><br>
<b>Sent: </b>Wednesday, January 20, 2016 8:12:27 PM<br>
<b>Subject: </b>[Gluster-users] Shard in production<br>
<div><br>
</div>
<p>Hi,</p>
<p><br>
i see recently the Shard feature is reached to stable. Soon,
i want to install oVirt with Gluster Replica Storage and i
guess shard feature is good for me. Can i use this feature
for my VM Storage production or you guess it's not mature ?</p>
<br>
_______________________________________________<br>
Gluster-users mailing list<br>
<a class="moz-txt-link-abbreviated" href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a><br>
<a class="moz-txt-link-freetext" href="http://www.gluster.org/mailman/listinfo/gluster-users">http://www.gluster.org/mailman/listinfo/gluster-users</a></blockquote>
<div><br>
</div>
</div>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Lindsay Mathieson</pre>
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