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<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Hello Olaf,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Thank you, so we’ll try to get rid of IPv6. Actually we do have this settings active but I may have to add them to the initrd file, too. (See
<a href="https://access.redhat.com/solutions/8709#rhel7disable">https://access.redhat.com/solutions/8709#rhel7disable</a>) to prevent ganesha from opening an IPv6 socket. It’s probably no big issue if ganesha uses IPv4overIPv6 for all connections, but to
keep things simple I would like to avoid it.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">@Edward<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">We got /etc/tuned/scale/tuned.conf with GSS/xCAT. I’m not sure whether it’s part of any rpm.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Cheers,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="mso-fareast-language:EN-US">Heiner<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black"><gpfsug-discuss-bounces@spectrumscale.org> on behalf of Olaf Weiser <olaf.weiser@de.ibm.com><br>
<b>Reply to: </b>gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Date: </b>Monday, 16 September 2019 at 09:12<br>
<b>To: </b>gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Subject: </b>Re: [gpfsug-discuss] Ganesha all IPv6 sockets - ist this to be expected?<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial",sans-serif">Hallo Heiner,
</span><br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">usually, Spectrum Scale comes with a tuned profile (named scale) ..
</span><br>
<br>
<tt><span style="font-size:12.0pt">[root@nsd01 ~]# tuned-adm active </span></tt><span style="font-size:12.0pt;font-family:"Courier New""><br>
<tt>Current active profile: scale</tt></span><o:p></o:p></p>
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<span style="font-size:10.0pt;font-family:"Arial",sans-serif">in there </span><br>
<tt><span style="font-size:12.0pt">[root@nsd01 ~]# cat /etc/tuned/scale/tuned.conf | tail -3 </span></tt><span style="font-size:12.0pt;font-family:"Courier New""><br>
<tt># Disable IPv6 </tt><br>
<tt>net.ipv6.conf.all.disable_ipv6=1 </tt><br>
<tt>net.ipv6.conf.default.disable_ipv6=1 </tt><br>
<tt>[root@nsd01 ~]# </tt><br>
</span><br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">depending on .... what you need to achieve .. one might be forced to changed that.. e.g. for RoCE .. you need IPv6 to be active ...
</span><br>
<span style="font-size:10.0pt;font-family:"Arial",sans-serif">but for all other scenarios with SpectrumScale (at least what I'm aware of right now) ... IPv6 can be disabled...
</span><br>
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<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">From: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">"Billich Heinrich Rainer (ID SD)" <heinrich.billich@id.ethz.ch></span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">To: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">gpfsug main discussion list <gpfsug-discuss@spectrumscale.org></span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Date: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">09/13/2019 05:02 PM</span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Subject: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">[EXTERNAL] [gpfsug-discuss] Ganesha all IPv6 sockets - ist this to be expected?</span><br>
<span style="font-size:7.5pt;font-family:"Arial",sans-serif;color:#5F5F5F">Sent by: </span><span style="font-size:7.5pt;font-family:"Arial",sans-serif">gpfsug-discuss-bounces@spectrumscale.org</span><o:p></o:p></p>
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<tt>Hello,</tt><br>
<br>
<tt>I just noted that our ganesha daemons offer IPv6 sockets only, IPv4 traffic gets encapsulated. But all traffic to samba is IPv4, smbd offers both IPv4 and IPv6 sockets.
</tt><br>
<tt>I just wonder whether this is to be expected? Protocols support IPv4 only, so why running on IPv6 sockets only for ganesha? Did we configure something wrong and should completely disable IPv6 on the kernel level</tt><br>
<br>
<tt>Any comment is welcome</tt><br>
<br>
<tt>Cheers,</tt><br>
<tt>Heiner</tt><br>
<tt>-- </tt><br>
<tt>=======================</tt><br>
<tt>Heinrich Billich</tt><br>
<tt>ETH Zürich</tt><br>
<tt>Informatikdienste</tt><br>
<tt>Tel.: +41 44 632 72 56</tt><br>
<tt>heinrich.billich@id.ethz.ch</tt><br>
<tt>========================</tt><br>
<br>
<br>
<tt>I did check with</tt><br>
<br>
<tt> ss -l -t -4</tt><br>
<tt> ss -l -t -6</tt><br>
<br>
<tt>add -p to get the process name, too.</tt><br>
<br>
<tt>do you get the same results on your ces nodes?</tt><br>
<br>
<br>
<tt>[root@nas22ces04-i config_samples]# ss -l -t -4</tt><br>
<tt>State Recv-Q Send-Q Local Address:Port Peer Address:Port</tt><br>
<tt>LISTEN 0 8192 *:gpfs *:*</tt><br>
<tt>LISTEN 0 50 *:netbios-ssn *:*</tt><br>
<tt>LISTEN 0 128 *:5355 *:*</tt><br>
<tt>LISTEN 0 128 *:sunrpc *:*</tt><br>
<tt>LISTEN 0 128 *:ssh *:*</tt><br>
<tt>LISTEN 0 100 127.0.0.1:smtp *:*</tt><br>
<tt>LISTEN 0 10 10.250.135.24:4379 *:*</tt><br>
<tt>LISTEN 0 128 *:32765 *:*</tt><br>
<tt>LISTEN 0 50 *:microsoft-ds *:*</tt><br>
<tt>[root@nas22ces04-i config_samples]# ss -l -t -6</tt><br>
<tt>State Recv-Q Send-Q Local Address:Port Peer Address:Port</tt><br>
<tt>LISTEN 0 128 :::32767 :::*</tt><br>
<tt>LISTEN 0 128 :::32768 :::*</tt><br>
<tt>LISTEN 0 128 :::32769 :::*</tt><br>
<tt>LISTEN 0 128 :::2049 :::*</tt><br>
<tt>LISTEN 0 128 :::5355 :::*</tt><br>
<tt>LISTEN 0 50 :::netbios-ssn :::*</tt><br>
<tt>LISTEN 0 128 :::sunrpc :::*</tt><br>
<tt>LISTEN 0 128 :::ssh :::*</tt><br>
<tt>LISTEN 0 128 :::32765 :::*</tt><br>
<tt>LISTEN 0 50 :::microsoft-ds :::*</tt><br>
<br>
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