<div dir="ltr">Hi Alex,<div><br></div><div>Yes....I will use CentOS 7 in my ENV for Glusterfs...</div><div><br></div><div>Also 2*480 GB SSD for caching purpose...so can make it as mirror for SLOG and L2ARC....How to use this SSD mirror for all 10*SATA drive and leverage the SSD caching ??</div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Fri, Apr 24, 2015 at 4:36 PM, Alex Crow <span dir="ltr"><<a href="mailto:acrow@integrafin.co.uk" target="_blank">acrow@integrafin.co.uk</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div class="HOEnZb"><div class="h5"><br>
On 24/04/15 09:14, Punit Dambiwal wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hi,<br>
<br>
I want to use the glusterfs with the following architecture :-<br>
<br>
1. 3* Supermicro servers As storage node.<br>
2. Every server has 10 SATA HDD (JBOD) and 2 SSD for caching (2 Additional on back pane for OS).<br>
3. Gluster should be replica=3<br>
4. 10G network Connection....<br>
<br>
The question is how to configure the SSD caching for 10 Bricks,just like CEPH (write the journal on SSD drives)...I didn't find any article for the same..<br>
<br>
Thanks,<br>
Punit<br>
<br>
</blockquote></div></div>
You have at least 2 choices for SSD caching with current GlusterFS.<br>
<br>
1. Use Centos 7 and use LVM cache on your SSDs.<br>
2. Use ZFS as your brick filesystem and set up an SLOG, say 4GB and an L2ARC (rest of the space) on the SSDs. Note that the SLOG would need to be a mirror if you only have 2 SSDs. L2ARC can be a stripe.<br>
<br>
Native Glusterfs tiering is being developed at the moment.<span class="HOEnZb"><font color="#888888"><br>
<br>
Alex<br>
<br>
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