<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Hi Rupert,<div class=""><br class=""></div><div class="">If you try RMDA (or work on the older, now removed RMDA code in glusterfs that use(d) ibverbs, be aware that there was a glitch, at least as of glusterfs v3.12.7: <a href="https://lists.gluster.org/pipermail/gluster-users/2018-May/034135.html" class="">https://lists.gluster.org/pipermail/gluster-users/2018-May/034135.html</a> A directory with tens of thousands of files did not show all directory entries.) I couldn't fix this back then and instead switched to ipoib. Although the measured per-file bandwith back then was better with RDMA than with ipoib by about 50%, I stayed with ipoib because in the aggreate bandwith (many clients reading many files simultaneously) it didn't make a difference. (Our bottlenecks are elsewhere, not in the network bandwidth between server and client.) I've used ipoib since then to run a glusterfs with more than 2 PB and haven't had serious problems so far.</div><div class=""><br class=""></div><div class="">best wishes,</div><div class="">Stefan</div><div class=""><div class=""><div><br class=""></div>
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<div><br class=""><blockquote type="cite" class=""><div class="">Am 24.02.2021 um 10:59 schrieb Saju Mohammed Noohu <<a href="mailto:sajmoham@redhat.com" class="">sajmoham@redhat.com</a>>:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" class="">Hi Rupert,<div class=""><br class=""><div class="">Apologies for the inconvenience, even though this was discussed, somehow it got missed in official release notes or documentation. </div><div class=""><br class=""></div><div class="">Few old discussions are below:</div><div class=""><a href="https://github.com/gluster/glusterfs/issues/692" class="">https://github.com/gluster/glusterfs/issues/692</a><br class=""></div><div class=""><a href="https://lists.gluster.org/pipermail/gluster-users/2018-July/034400.html" class="">https://lists.gluster.org/pipermail/gluster-users/2018-July/034400.html</a><br class=""></div><div class=""><br class=""></div><div class="">Will surely document this as part of Gluster docs on an appropriate heading.</div><div class=""><br class=""></div><div class=""><div dir="auto" class="">As evident from the above discussions, we deprecated it since we had no means to support it. If that changes, we'll be happy to work on re-enabling it, maybe as a compile-time option.</div></div><div class=""><br class=""></div><div class="">Thanks</div><div class="">Saju</div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div></div></div><br class=""><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 24, 2021 at 1:23 PM Schlick Rupert <<a href="mailto:Rupert.Schlick@ait.ac.at" class="">Rupert.Schlick@ait.ac.at</a>> wrote:<br class=""></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<div class="gmail-m_-1736521010177902879WordSection1"><p class="MsoNormal"><span lang="EN-US" class="">What surprised me is more that, if not looking into the developer channels, there is no indication that the feature is gone till it crashes when you try to use it. I did not think of
Gluster as a developer-only tool, even in the “community version”.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" class="">Native RDMA support was the main reason for me to choose GlusterFS over MooseFS – although it’s just a feature on “paper” and I do not really know yet the real needs and bottlenecks
of our new cluster. With both RDMA and tiering gone, I based my decision on completely outdated information about gluster features.<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" class="">@strahil: I hope to find some time to try your suggestion next week, thanks. But even if it works, I will most probably not risk using something the developers consider not fit for use
anymore. There seem also to be issues with mixed mode and multiple IP addresses anyway – our computation and storage nodes are on a infiniband (RDMA and IP over Infiniband) island network, but all are also connected to the outside via IP over Ethernet. The
login nodes, which would also need access to the cluster file system are in a VM and only accessible via IP over Ethernet<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" class=""><u class=""></u> <u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" class="">Rupert<u class=""></u><u class=""></u></span></p><p class="MsoNormal"><span lang="EN-US" class=""><u class=""></u> <u class=""></u></span></p>
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<div style="border-right:none;border-bottom:none;border-left:none;border-top:1pt solid rgb(225,225,225);padding:3pt 0cm 0cm" class=""><p class="MsoNormal"><b class="">Von:</b> Strahil Nikolov <<a href="mailto:hunter86_bg@yahoo.com" target="_blank" class="">hunter86_bg@yahoo.com</a>> <br class="">
<b class="">Gesendet:</b> Dienstag, 23. Februar 2021 11:20<br class="">
<b class="">An:</b> Schlick Rupert <<a href="mailto:Rupert.Schlick@ait.ac.at" target="_blank" class="">Rupert.Schlick@ait.ac.at</a>>; Saju Mohammed Noohu <<a href="mailto:sajmoham@redhat.com" target="_blank" class="">sajmoham@redhat.com</a>><br class="">
<b class="">Cc:</b> <a href="mailto:gluster-users@gluster.org" target="_blank" class="">gluster-users@gluster.org</a><br class="">
<b class="">Betreff:</b> Re: [Gluster-users] RDMA support in gluster 9<u class=""></u><u class=""></u></p>
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</div><p class="MsoNormal"><u class=""></u> <u class=""></u></p><p class="MsoNormal">As everything deprecated, it never get's completely removed from source.<u class=""></u><u class=""></u></p>
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<div id="gmail-m_-1736521010177902879yMail_cursorElementTracker_1614075472100" class=""><p class="MsoNormal">Can you try to 'make' from source and check if v9 by default has 'Infiniband verbs' disabled ?<u class=""></u><u class=""></u></p>
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<div id="gmail-m_-1736521010177902879yMail_cursorElementTracker_1614075514421" class=""><p class="MsoNormal">If yes, then you can compile with enabled supportand try that.<u class=""></u><u class=""></u></p>
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<div id="gmail-m_-1736521010177902879yMail_cursorElementTracker_1614075547333" class=""><p class="MsoNormal"><u class=""></u> <u class=""></u></p>
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<div id="gmail-m_-1736521010177902879yMail_cursorElementTracker_1614075547537" class=""><p class="MsoNormal">Best Regards,<u class=""></u><u class=""></u></p>
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<div id="gmail-m_-1736521010177902879yMail_cursorElementTracker_1614075551597" class=""><p class="MsoNormal" style="margin-bottom:12pt">Strahil Nikolov<u class=""></u><u class=""></u></p>
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<div class=""><p class="MsoNormal"><span style="font-family:Roboto,serif;color:rgb(109,0,246)" class="">On Tue, Feb 23, 2021 at 10:40, Schlick Rupert<u class=""></u><u class=""></u></span></p>
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<div class=""><p class="MsoNormal"><span style="font-family:Roboto,serif;color:rgb(109,0,246)" class=""><<a href="mailto:Rupert.Schlick@ait.ac.at" target="_blank" class="">Rupert.Schlick@ait.ac.at</a>> wrote:<u class=""></u><u class=""></u></span></p>
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<div style="border-top:none;border-right:none;border-bottom:none;border-left:1pt solid rgb(109,0,246);padding:0cm 0cm 0cm 15pt;margin-top:7.5pt" class=""><p class="MsoNormal">________<br class="">
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<br class="">
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Community Meeting Calendar:<br class="">
<br class="">
Schedule -<br class="">
Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC<br class="">
Bridge: <a href="https://meet.google.com/cpu-eiue-hvk" target="_blank" class="">https://meet.google.com/cpu-eiue-hvk</a><br class="">
Gluster-users mailing list<br class="">
<a href="mailto:Gluster-users@gluster.org" target="_blank" class="">Gluster-users@gluster.org</a><br class="">
<a href="https://lists.gluster.org/mailman/listinfo/gluster-users" target="_blank" class="">https://lists.gluster.org/mailman/listinfo/gluster-users</a><u class=""></u><u class=""></u></p>
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________<br class=""><br class=""><br class=""><br class="">Community Meeting Calendar:<br class=""><br class="">Schedule -<br class="">Every 2nd and 4th Tuesday at 14:30 IST / 09:00 UTC<br class="">Bridge: <a href="https://meet.google.com/cpu-eiue-hvk" class="">https://meet.google.com/cpu-eiue-hvk</a><br class="">Gluster-users mailing list<br class=""><a href="mailto:Gluster-users@gluster.org" class="">Gluster-users@gluster.org</a><br class="">https://lists.gluster.org/mailman/listinfo/gluster-users<br class=""></div></blockquote></div><br class=""></div></body></html>