<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:"Lucida Grande";}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:#0563C1;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:#954F72;
text-decoration:underline;}
span.E-postmall17
{mso-style-type:personal-compose;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:70.85pt 70.85pt 70.85pt 70.85pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link="#0563C1" vlink="#954F72"><div class=WordSection1><p class=MsoNormal>On one of our clusters, from time to time if users try to access files or folders via the direct full path over NFS, the NFS-client gets invalid information from the server.<o:p></o:p></p><p class=MsoNormal>For instance, if I run “ls /gpfs/filesystem/test/test2/test3” over NFS-mount, result is just full of ????????<o:p></o:p></p><p class=MsoNormal>If I recurse through the path once, for instance by ls’ing or cd’ing through the folders one at a time or running ls –R, I can then access directly via the full path afterwards.<o:p></o:p></p><p class=MsoNormal>This seem to be intermittent, and I haven’t found how to reliably recreate the issue.<o:p></o:p></p><p class=MsoNormal>Possibly, it can be connected to creating or changing files or folders via a GPFS mount, and then accessing them through NFS, but it doesn’t happen consistently.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is this a known behaviour or bug, and does anyone know how to fix the issue?<o:p></o:p></p><p class=MsoNormal>These NSD-servers currently run Scale 4.2.2.3, while the CES is on 5.0.1.1.<o:p></o:p></p><p class=MsoNormal>GPFS clients run Scale 5.0.1.1, and NFS clients run CentOS 7.5.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Regards,<o:p></o:p></p><p class=MsoNormal>Andreas Mattsson<o:p></o:p></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:EN-GB'>_____________________________________________<o:p></o:p></span></p><p class=MsoNormal><span style='font-family:"Lucida Grande";color:black;mso-fareast-language:EN-GB'><img width=121 height=65 style='width:1.2604in;height:.677in' id="_x0036_b0a11de-89d6-4863-b8e8-188f1e1c5a0c" src="cid:image001.png@01D480EA.4FF3B020" alt="cid:part1.08040705.03090509@maxiv.lu.se"><br></span><b><span style='font-size:10.0pt;color:black;mso-fareast-language:EN-GB'> <br>Andreas Mattsson<br></span></b><span style='font-size:8.0pt;color:black;mso-fareast-language:EN-GB'>Systems Engineer</span><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:EN-GB'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:12.0pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:EN-GB'><o:p> </o:p></span></p><p class=MsoNormal style='margin-bottom:12.0pt'><span style='font-size:8.0pt;color:black;mso-fareast-language:EN-GB'>MAX IV Laboratory<br>Lund University<br></span><span style='font-size:8.5pt;font-family:"Times New Roman",serif;color:black;mso-fareast-language:EN-GB'>P.O. Box 118, SE-221 00 Lund, Sweden<br>Visiting address: Fotongatan 2, 224 84 Lund<br></span><span style='font-size:8.0pt;color:black;mso-fareast-language:EN-GB'>Mobile: +46 706 64 95 44<br></span><span lang=SV style='font-size:8.0pt;color:black;mso-fareast-language:EN-GB'><a href="mailto:andreas.mattsson@maxiv.lu.se"><span lang=EN-GB style='color:blue'>andreas.mattsson@maxiv.lu.se</span></a></span><span style='font-size:8.0pt;color:black;mso-fareast-language:EN-GB'><br></span><span lang=SV style='font-size:8.0pt;color:black;mso-fareast-language:EN-GB'><a href="http://www.maxiv.se/"><span lang=EN-GB style='color:blue'>www.maxiv.se</span></a></span><span style='font-size:8.0pt;color:black;mso-fareast-language:EN-GB'><o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>