<div dir="ltr"><div dir="ltr"><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Dec 9, 2020 at 12:40 PM Stef Walter <<a href="mailto:swalter@redhat.com">swalter@redhat.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Dec 9, 2020 at 6:33 PM David Hrbáč <<a href="mailto:david-lists@hrbac.cz" target="_blank">david-lists@hrbac.cz</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">I don't use CentOS Stream, I use RHEL. I use RHEL to develop software <br>
for RHEL and compatible OS clones, including CentOS. If Stream retains <br>
binary compatibility, and specifically kernel ABI compatibility, then <br>
the users of the software packages we develop can continue to use them. <br>
If not, they can't. Simple as that. So please don't push rolling kernel <br>
updates to Stream that break the kernel ABI.<br></blockquote></div></div></blockquote><div><br></div><div>Indeed. If any such broken change (eg: that breaks kernel ABI) is pushed to Stream, that is treated as a serious problem by the RHEL engineering teams. We have the necessary process in place to QE test changes before they arrive in CentOS Stream. <br></div><div><br></div><div>I understand this fact alone is not a panacea for all the problems people are highlighting. But it does seem to cover your use case. From a regression, stability, ABI, and kernel ABI perspective, it is the goal and focus of many of us in RHEL Engineering for CentOS Stream to be stable.<br></div><div><br></div><div>Cheers,</div><div><br></div><div>Stef<br></div><div><br></div></div></div></blockquote><div><br></div><div>Or...</div><div><br></div><div><br></div><div>(Never mind.)</div><div><br></div><div><br></div><div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><div></div><div><br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><br></blockquote><div><br></div><div>Rolling kernel updates are going to kill all the traditional HPC clusters. Almost 25% of the TOP 500 HPC clusters run CentOS. See <a href="https://www.top500.org/statistics/list/" target="_blank">https://www.top500.org/statistics/list/</a></div><div>DH</div></div></div>
_______________________________________________<br>
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<a href="https://lists.centos.org/mailman/listinfo/centos-devel" rel="noreferrer" target="_blank">https://lists.centos.org/mailman/listinfo/centos-devel</a><br>
</blockquote></div><br clear="all"><br>-- <br><div dir="ltr">Stef Walter (he / his)<br>Linux Engineering<br>Red Hat</div></div>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><div><div dir="ltr"><br><div dir="ltr" style="margin-left:0pt"><table style="border:none;border-collapse:collapse"><colgroup><col width="445"><col width="275"></colgroup><tbody><tr style="height:90pt"><td style="border-width:1pt;border-style:solid;border-color:rgb(255,255,255);vertical-align:top;padding:5pt"><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><font face="Arial"><span style="font-size:12.6667px;white-space:pre-wrap"><b>Matt Phelps</b></span></font></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><font color="#000000" face="Arial"><span style="font-size:12.6667px;white-space:pre-wrap"><b>Information Technology Specialist, Systems Administrator</b></span></font></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><font color="#000000" face="Arial"><span style="font-size:12.6667px;white-space:pre-wrap">(Computation Facility</span></font>, Smithsonian Astrophysical Observatory)</p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;font-weight:700;vertical-align:baseline;white-space:pre-wrap">Center for Astrophysics | Harvard & Smithsonian</span></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><br></p><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;background-color:transparent;vertical-align:baseline;white-space:pre-wrap">60 Garden Street | MS 39 | Cambridge, MA 02138</span></p>email: <a href="mailto:mphelps@cfa.harvard.edu" target="_blank">mphelps@cfa.harvard.edu</a><br><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:9.5pt;font-family:Arial;background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><img src="https://lh5.googleusercontent.com/27BMxsC8PNyf5KTQKk3XXgRO_wLFfyTSJqSrArFVTHKzXR-F1GM1dkcbALumtHfQ-XywY0HszACvTxfNbNnsqTuqwev72DoKnMS2En3SUhoeOKsxS99pFgxp2akTBd5ZxwXeEzzl" width="350" height="2" style="border: none;"></span></p></td></tr><tr style="height:27pt"><td style="border-width:1pt;border-style:solid;border-color:rgb(255,255,255);vertical-align:top;padding:5pt"><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><span style="font-size:11pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap"><img src="https://lh6.googleusercontent.com/0ZtY7OVp7JUE6c07iw9qwGi25245c2MSrx0T-u7t_VYr2OiN3uMr1Jh6vzqHA2BI1cu-jzLev-aiZqCW66HIMgeobZ8Wx1MzwRuOKD6QO_iWs8llxnwIpoaocLzQ8YF7gDocGPk7" width="149" height="65" style="border: none;"></span></p><br><p dir="ltr" style="line-height:1.2;margin-top:0pt;margin-bottom:0pt"><a href="http://cfa.harvard.edu/" target="_blank"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap">cfa.harvard.edu</span></a><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap"> | </span><a href="http://cfa.harvard.edu/facebook" target="_blank"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap">Facebook</span></a><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap"> | </span><a href="http://cfa.harvard.edu/twitter" target="_blank"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap">Twitter</span></a><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap"> | </span><a href="http://cfa.harvard.edu/youtube" target="_blank"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);vertical-align:baseline;white-space:pre-wrap">YouTube</span></a><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap"> | </span><a href="http://cfa.harvard.edu/newsletter" target="_blank"><span style="font-size:9.5pt;font-family:Arial;color:rgb(0,0,0);background-color:transparent;vertical-align:baseline;white-space:pre-wrap">Newsletter</span></a></p></td></tr><tr style="height:27pt"><td style="border-width:1pt;border-style:solid;border-color:rgb(255,255,255);vertical-align:top;padding:5pt"><br></td></tr></tbody></table></div><div dir="ltr"></div></div></div></div></div></div></div></div></div></div></div></div>