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--></style></head><body bgcolor="white" lang="EN-US" link="blue" vlink="purple">Yes.<br><br><div class="gmail_quote">Bobby Jacob <bobby.jacob@alshaya.com> wrote:<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Joe,<p></p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><p> </p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You mentioned “</span>If you shut down a server through the normal kill process”:</p><p></p>
<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal">What do you mean by normal kill process. Is it just shutdown the server for maintanence after going a “service glusterd stop” and “service glusterfsd stop”.
<span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><p></p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><p> </p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Thanks & Regards,<p></p></span></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial","sans-serif"">Bobby Jacob<p></p></span></b></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:18.0pt;font-family:Webdings;color:green">P</span><span lang="EN-GB" style="font-size:10.0pt;font-family:"MS Sans Serif";color:navy">
</span><b><span lang="EN-GB" style="font-size:8.0pt;font-family:"Tahoma","sans-serif";color:green">SAVE TREES</span></b><b><span lang="EN-GB" style="font-size:10.0pt;font-family:"Arial","sans-serif";color:green">.
</span></b><span lang="EN-GB" style="font-size:8.0pt;font-family:"Tahoma","sans-serif";color:green">Please don't print this e-mail unless you really need to.</span><span style="font-size:8.0pt;font-family:"Verdana","sans-serif";color:navy"><p></p></span></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><p> </p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> gluster-users-bounces@gluster.org [mailto:gluster-users-bounces@gluster.org]
<b>On Behalf Of </b>Joe Julian<br />
<b>Sent:</b> Tuesday, October 22, 2013 4:12 PM<br />
<b>To:</b> gluster-users@gluster.org<br />
<b>Subject:</b> Re: [Gluster-users] New to GlusterFS<p></p></span></p>
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<p class="MsoNormal"></p><p> </p>
<p class="MsoNormal" style="margin-bottom:12.0pt">The reason for the long (42 second) ping-timeout is because re-establishing fd's and locks can be a very expensive operation. Allowing a longer time to reestablish connections is logical, unless you have servers
that frequently die.<br />
<br />
If you shut down a server through the normal kill process, the TCP connections will be closed properly. The client will be aware that the server is going away and there will be no timeout. This allows server maintenance without encountering that issue.<br />
<br />
One issue with a 42 second timeout is that ext4 may detect an error and remount itself read only should that happen while the VM is running. You can override this behavior by specifying the mount option, "errors=continue" in fstab ("errors=remount-ro" is the
default). The default can be changed, as well, by changing the superblock option with tune2fs.</p><p></p>
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<p class="MsoNormal">On 10/22/2013 03:12 AM, John Mark Walker wrote:</p><p></p>
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<blockquote style="margin-top:5.0pt;margin-bottom:5.0pt">
<p>Hi JC,</p><p></p>
<p>Yes, the default is a 42-second timeout for failover. You can configure that to be a smaller window.</p><p></p>
<p>-JM</p><p></p>
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<p class="MsoNormal">On Oct 22, 2013 10:57 AM, "JC Putter" <<a href="mailto:jcputter@gmail.com">jcputter@gmail.com</a>> wrote:</p><p></p>
<p class="MsoNormal">Hi,<br />
<br />
I am new to GlusterFS, i am trying to accomplish something which i am<br />
not 100% sure is the correct use case but hear me out.<br />
<br />
I want to use GlusterFS to host KVM VM's, from what I've read this was<br />
not recommended due to poor write performance however since<br />
libgfapi/qemu 1.3 this is now viable ?<br />
<br />
<br />
Currently i'am testing out GlusterFS with two nodes, both running as<br />
server and client<br />
<br />
i have the following Volume:<br />
<br />
Volume Name: DATA<br />
Type: Replicate<br />
Volume ID: eaa7746b-a1c1-4959-ad7d-743ac519f86a<br />
Status: Started<br />
Number of Bricks: 1 x 2 = 2<br />
Transport-type: tcp<br />
Bricks:<br />
Brick1: glusterfs1.example.com:/data<br />
Brick2: glusterfs2.example.com:/data<br />
<br />
<br />
and mounting the brick locally on each server as /mnt/gluster,<br />
replication works and everything but as soon as i kill one node, the<br />
directory /mnt/gluster/ becomes unavailable for 30/40 seconds<br />
<br />
log shows<br />
<br />
[2013-10-22 11:55:48.055571] W [socket.c:514:__socket_rwv]<br />
0-DATA-client-0: readv failed (No data available)<br />
<br />
<br />
Thanks in advance!<br />
_______________________________________________<br />
Gluster-users mailing list<br />
<a href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a><br />
<a href="http://supercolony.gluster.org/mailman/listinfo/gluster-users" target="_blank">http://supercolony.gluster.org/mailman/listinfo/gluster-users</a></p><p></p>
</div>
<p class="MsoNormal"><br />
<br />
<br />
</p><p></p>
<pre>_______________________________________________<p></p></pre>
<pre>Gluster-users mailing list<p></p></pre>
<pre><a href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a><p></p></pre>
<pre><a href="http://supercolony.gluster.org/mailman/listinfo/gluster-users">http://supercolony.gluster.org/mailman/listinfo/gluster-users</a><p></p></pre>
</blockquote>
<p class="MsoNormal"></p><p> </p>
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</blockquote></div><br>
-- <br>
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