<div dir="ltr">Thanks Eliezer,<div><br></div><div>The size is about 600G. Do you think mounting with NFS on top of GlusterFS instead of native gluster client will help? </div><div><br></div><div>-</div><div>Jack Marc</div>
</div><div class="gmail_extra"><br><br><div class="gmail_quote">On Mon, Jun 30, 2014 at 2:53 PM, Eliezer Croitoru <span dir="ltr"><<a href="mailto:eliezer@ngtech.co.il" target="_blank">eliezer@ngtech.co.il</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hey Jack,<br>
<br>
I asked since I have been trying to use GlusterFS based storage for my local very-tiny mailserver and it was kind of a disaster.<br>
There was only one mailserver mounting the volume and many times it took about ages to sync a directory.<br>
Sometimes I had an issue which caused all sort of index errors in the dovecot log.<br>
<br>
Eventually what I did was to mount the FS image file ontop of a glusterfs the same as many do for VMs.<br>
<br>
The FS is fast and redundant but lacks that ability to be flexible for growth in couple aspects.<br>
<br>
My glusterfs nodes are very small with 4gb ram, quad-core coreI5, 2TB disk at each machine for replication.<br>
It's a very tiny machine and I am considering replacing it with a tiny Lenovo IOMEGA NAS due to abusive power consumption.<br>
<br>
Using maildir that stores lots of tiny files might be the main issue of the high I/O and related issue(while was not researched enough).<br>
<br>
About the high I/O on one node and not the other..<br>
It is possible that most of the load is distributed on one node more then the other kind of randomly.<br>
<br>
What is the size of the mail server?(in terms of GB and INODES, df -i && du -h)<span class="HOEnZb"><font color="#888888"><br>
<br>
Eliezer</font></span><div class="HOEnZb"><div class="h5"><br>
<br>
On 06/30/2014 09:41 AM, MySystem 365 wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
It is Qmailtoaster using vpopmail -Maildir structure.<br>
We also notice that sometimes g1 is at high I/O and then g2 is low or it<br>
takes turn.<br>
<br>
Regards<br>
Jack Marc<br>
</blockquote>
<br>
</div></div></blockquote></div><br></div>