Hi,<br>loading write-behind on client side would help, since write-behind caches the write buffer and writes that data to server at a later point of time.<br><br>regards,<br><br><div class="gmail_quote">On Thu, Nov 20, 2008 at 11:36 PM, Aleynikov, Serge <span dir="ltr"><<a href="mailto:Serge.Aleynikov@gs.com">Serge.Aleynikov@gs.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">Would the booster, writebehind or iothreads
translators provide any help in this setup to reduce potential blocking of the
local client writer due to NFS slowness? </font></span></div><br>
<blockquote style="border-left: 2px solid rgb(0, 0, 255); padding-left: 5px; margin-left: 5px; margin-right: 0px;">
<div dir="ltr" align="left" lang="en-us">
<hr>
<font face="Tahoma" size="2"><div class="Ih2E3d"><b>From:</b> <a href="mailto:basavanagowda@gmail.com" target="_blank">basavanagowda@gmail.com</a>
[mailto:<a href="mailto:basavanagowda@gmail.com" target="_blank">basavanagowda@gmail.com</a>] <b>On Behalf Of </b>Basavanagowda
Kanur<br></div><div class="Ih2E3d"><b>Sent:</b> Thursday, November 20, 2008 10:37 AM<br></div><div><div></div><div class="Wj3C7c"><b>To:</b>
Aleynikov, Serge<br><b>Cc:</b> <a href="mailto:gluster-users@gluster.org" target="_blank">gluster-users@gluster.org</a><br><b>Subject:</b>
Re: [Gluster-users] Gluster setup question<br></div></div></font><br></div><div><div></div><div class="Wj3C7c">
<div></div><br><br>
<div class="gmail_quote">On Thu, Nov 20, 2008 at 9:01 PM, Aleynikov, Serge <span dir="ltr"><<a href="mailto:Serge.Aleynikov@gs.com" target="_blank">Serge.Aleynikov@gs.com</a>></span>
wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2">I built it from glusterfs-1.3.12.tag.gz
source.</font></span></div></div></blockquote>
<div><br>my replies in previous mail hold good. <br><br></div>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<div dir="ltr" align="left"><span><font color="#0000ff" face="Arial" size="2"></font></span></div><br>
<blockquote style="border-left: 2px solid rgb(0, 0, 255); padding-left: 5px; margin-left: 5px; margin-right: 0px;">
<div dir="ltr" align="left" lang="en-us">
<hr>
<font face="Tahoma" size="2"><b>From:</b> <a href="mailto:basavanagowda@gmail.com" target="_blank">basavanagowda@gmail.com</a> [mailto:<a href="mailto:basavanagowda@gmail.com" target="_blank">basavanagowda@gmail.com</a>] <b>On Behalf Of
</b>Basavanagowda Kanur<br><b>Sent:</b> Wednesday, November 19, 2008 10:50
PM<br><b>To:</b> Aleynikov, Serge<br><b>Cc:</b> <a href="mailto:gluster-users@gluster.org" target="_blank">gluster-users@gluster.org</a><br><b>Subject:</b> Re:
[Gluster-users] Gluster setup question<br></font><br></div>
<div>
<div></div>
<div>
<div></div>Serge,<br> I am assuming you are not using source code
from repository.<br> If you are using source code directly from
repository, then answers below might not hold good. Please mention the
version, if you are using from source repository.<br><br>
<div class="gmail_quote">On Thu, Nov 20, 2008 at 6:13 AM, Aleynikov, Serge
<span dir="ltr"><<a href="mailto:Serge.Aleynikov@gs.com" target="_blank">Serge.Aleynikov@gs.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<p><font face="Arial" size="2">Hi,</font> </p>
<p><font face="Arial" size="2">I am running several clients writing to local
disk that are setup to replicate data to N glusterfs server processes
that use NFS for storing this data. I have the following
questions:</font></p>
<p><font face="Arial" size="2">1. Does every write of a process to a local
directory managed by glusterfs client involve syncronous replication of
data to glusterfs server?</font></p></div></blockquote>
<div>yes. it involves synchronous replication.
<br><br>glusterfs--mailine--3.0--patch-621 (onwards) in our source
repository has an AFR feature called quick-unwind, which would make
replication asychronous.<br><br></div>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<p><font face="Arial" size="2"></font></p>
<p><font face="Arial" size="2">2. Is it possible that if NFS is slow on the
glusterfs server side, then writing to local disk of a process on the
glusterfs client's machine would block?</font></p></div></blockquote>
<div>yes. fops on glusterfs will block.<br></div>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div>
<p><font face="Arial" size="2"></font></p>
<p><font face="Arial" size="2">Thanks.</font> </p>
<p><font face="Arial" size="2">Serge</font>
</p></div><br>_______________________________________________<br>Gluster-users
mailing list<br><a href="mailto:Gluster-users@gluster.org" target="_blank">Gluster-users@gluster.org</a><br><a href="http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users" target="_blank">http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users</a><br>
<br></blockquote></div><br><br clear="all"><br>--
<br>gowda<br></div></div></blockquote></div></blockquote></div><br><br clear="all"><br>-- <br>gowda<br></div></div></blockquote></div>
<br>_______________________________________________<br>
Gluster-users mailing list<br>
<a href="mailto:Gluster-users@gluster.org">Gluster-users@gluster.org</a><br>
<a href="http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users" target="_blank">http://zresearch.com/cgi-bin/mailman/listinfo/gluster-users</a><br>
<br></blockquote></div><br><br clear="all"><br>-- <br>Raghavendra G<br><br>