<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><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>
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</blockquote></div><br clear="all"><br>-- <br><div dir="ltr">Stef Walter (he / his)<br>Linux Engineering<br>Red Hat</div></div>