<html>
<head>
<meta content="text/html; charset=UTF-8" http-equiv="Content-Type">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div class="moz-cite-prefix">On 10/8/2014 1:45 AM,
<a class="moz-txt-link-abbreviated" href="mailto:justglusterfs@gmail.com">justglusterfs@gmail.com</a> wrote:<br>
</div>
<blockquote cite="mid:201410081645090458151@gmail.com" type="cite">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<style>body { line-height: 1.5; }body { font-size: 10.5pt; font-family: 微软雅黑; color: rgb(0, 0, 0); line-height: 1.5; }</style>
<div><span></span>
<div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;">Hi
all：</div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;">
I do the following test：</div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;">
<span style="font-size: 10.5pt; line-height: 1.5;
background-color: window;">I create a glusterfs </span><span
style="font-size: 10.5pt; line-height: 1.5;
background-color: window;">replica volume (replica count
is 2 ) with two server node(server A and server B)，use XFS
as the underlying filesystem， then mount the volume in
client node，</span></div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;"><span
style="font-size: 10.5pt; line-height: 1.5;
background-color: window;"> </span><span
style="line-height: 1.5;"> then， I s</span><span
style="line-height: 24px;">hut down the network of server
A node， in client node， I copy a dir（which has a</span><span
style="line-height: 24px;"> lot of small files</span><span
style="line-height: 24px;">）， the dir size is <b>2.9GByte，</b></span></div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;"><span
style="line-height: 24px;"> when copy finish， I
unmount the volume from the client， then I start the
network of server A node， now， glusterfs
self-heal-daemon start heal dir from server B to
server A， </span></div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;"><span
style="line-height: 24px;"> in the end， I find the
self-heal-daemon heal the dir <b>use 40 m</b></span><span
style="line-height: 19.1875px;"><b>inutes， </b> </span><span
style="line-height: 24px;"><b>It's too slow！ why？</b></span></div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;"><span
style="line-height: 24px;"><b><br>
</b></span></div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;"><span
style="line-height: 24px;"> I </span><span
style="line-height: 24px;"> </span><span
style="line-height: 24px;">find out r</span><span
style="line-height: 19.1875px;">elated</span><span
style="line-height: 24px;"> options with self-heal， as
follow：</span></div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;"><b><span
style="line-height: 24px;"> </span><span
style="line-height: 1.5;">cluster.self-heal-window-size</span></b></div>
<span style="font-family: 微软雅黑, Tahoma; line-height: normal;"></span>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;"><b>
<span style="text-align: justify; text-indent: 21pt;
line-height: 1.5;">cluster.self-heal-readdir-size</span></b></div>
<span style="font-family: 微软雅黑, Tahoma; line-height: normal;"><b>
<span lang="X-NONE">cluster.background-self-heal-count</span></b></span></div>
<div><font face="微软雅黑, Tahoma"><span style="line-height:
normal;"><b><br>
</b></span></font></div>
<div><font face="微软雅黑, Tahoma"><span style="line-height:
normal;"><b> </b></span></font></div>
<div><font face="微软雅黑, Tahoma"><span style="line-height:
normal;"><b> then I config :</b></span></font></div>
<div><b style="font-family: 微软雅黑, Tahoma; line-height: normal;"><span
style="line-height: 24px;"> </span><span
style="line-height: 1.5;">cluster.self-heal-window-size
is 1024(max value)</span></b></div>
<div><font face="微软雅黑, Tahoma"><b> <span lang="EN-US">cluster.self-heal-readdir-size
is 131072(max value)</span></b></font></div>
<div><font face="微软雅黑, Tahoma"><b> </b></font></div>
<div><b><font face="微软雅黑, Tahoma"> and then do the same
test case, find this times heal the dir use 35
minutes, </font></b><span style="line-height: 24px;"><font
face="微软雅黑, Tahoma"><b>The effective is not obvious, </b></font></span></div>
<div><font face="微软雅黑, Tahoma"><b> <br>
</b></font>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;"><b><br>
</b></div>
<div style="line-height: normal;"><span style="font-family:
微软雅黑, Tahoma;"> </span><font face="微软雅黑, Tahoma"><b> I
want to ask, <span style="line-height: 24px;">If
there are better ways to improve replica volume self
heal lots of small file </span><a
moz-do-not-send="true" class="clickable
js-inline-clickable" style="line-height: 24px; margin:
0px; padding: 0px; border: 0px; outline: 0px; cursor:
pointer;">performance??</a></b></font></div>
<div style="font-family: 微软雅黑, Tahoma; line-height: normal;"><span
style="line-height: 24px;"> </span><br>
</div>
</div>
</div>
</blockquote>
If you need it healed that quickly, mount the volume on a client and
walk the tree with "find -exec stat {} \; > /dev/null"<br>
</body>
</html>