<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
</head>
<body bgcolor="#FFFFFF" text="#000000">
<p>Hello all,<br>
</p>
<p>Thanks for sharing that. I am setting this up on our CES nodes. In this example the nvme devices are not persistent. RHEL's default udev rules put them in /dev/disk/by-id/ persistently by serial number so I modified mmdevdiscover to look for them there.
What are others doing? custom udev rules for the nvme devices?<br>
</p>
<p>Also I have used LVM in the past to stitch multiple nvme together for better performance. I am wondering in the use case with GPFS that it may hurt performance by hindering the ability of GPFS to do direct IO or directly accessing memory. Any opinions
there?</p>
<p>Thanks</p>
<p>Matt<br>
</p>
<div class="moz-cite-prefix">On 12/5/16 10:33 AM, Ulf Troppens wrote:<br>
</div>
<blockquote cite="mid:OFB92AA52A.44FD7739-ONC1258080.005A7BAC-C1258080.005AF2FD@notes.na.collabserv.com" type="cite">
<p>FYI ... in case not seen .... benchmark for LROC with NVMe<br>
<a moz-do-not-send="true" href="http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/performance-gains-ibm-spectrum-scale.pdf">http://www.intel.com/content/dam/www/public/us/en/documents/white-papers/performance-gains-ibm-spectrum-scale.pdf</a><br>
<br>
<br>
--<br>
IBM Spectrum Scale Development - Client Engagements & Solutions Delivery<br>
Consulting IT Specialist<br>
Author "Storage Networks Explained"<br>
<br>
IBM Deutschland Research & Development GmbH<br>
Vorsitzende des Aufsichtsrats: Martina Koederitz<br>
Geschäftsführung: Dirk Wittkopp<br>
Sitz der Gesellschaft: Böblingen / Registergericht: Amtsgericht Stuttgart, HRB 243294<br>
<br>
<br>
</p>
<fieldset class="mimeAttachmentHeader"></fieldset> <br>
<pre wrap="">_______________________________________________
gpfsug-discuss mailing list
gpfsug-discuss at spectrumscale.org
<a class="moz-txt-link-freetext" href="http://gpfsug.org/mailman/listinfo/gpfsug-discuss">http://gpfsug.org/mailman/listinfo/gpfsug-discuss</a>
</pre>
</blockquote>
<br>
<span style="font-size:10.0pt;font-family:"Arial","sans-serif""><o:p></o:p></span>
<p></p>
<div></div>
<p class="MsoNormal"><o:p> </o:p></p>
<div class="MsoNormal" align="center" style="text-align:center">
<hr size="2" width="100%" align="center">
</div>
<p class="MsoNormal"><span style="font-size:7.5pt;font-family:"Arial","sans-serif";color:gray">The materials in this message are private and may contain Protected Healthcare Information or other information of a sensitive nature. If you are not the intended
recipient, be advised that any unauthorized use, disclosure, copying or the taking of any action in reliance on the contents of this information is strictly prohibited. If you have received this email in error, please immediately notify the sender via telephone
or return mail.</span></p>
</body>
</html>