<html><body><div style="font-family:Arial, Helvetica, sans-serif; font-size:11.0pt; line-height:1.3; color:#000000" id="nine_body_n176897-a1f40" class="nine_body" dir="auto"><div class="nine-pg" dir="auto">In the meantime, I managed to downgrade the kernel by installing it from package but this is just a temporary fix, so a long-term solution is still desired. </div><div class="nine-pg blank sign" dir="auto"><br></div><div id="nine-sign-n176897-a1f40" class="nine_signature" dir="auto"><div class="nine-pg" dir="auto"><br></div><div class="nine-pg" dir="auto">~ Sent from my mobile</div><div class="nine-pg" dir="auto"><br></div></div></div><div class="quoted_output_body"><div id="quoted_header_n176897-a1f40" class="quoted_header_editor fold" dir="auto"><hr style="border:none; height:1px; color:#E1E1E1; background-color:#E1E1E1;" class="nine-pg"><div style="border:none; padding:3.0pt 0cm 0cm 0cm" class="nine-pg" dir="auto"><span style="font-size:11.0pt;font-family:Calibri, Arial, Helvetica, sans-serif"><b>From:</b> immanuel@fodor.it<br><b>Sent:</b> Monday, December 21, 2020 14:59<br><b>To:</b> drbd-user@lists.linbit.com<br><b>Subject:</b> [drbd] [DRBD-user] DRBD support on CentOS Stream<br></span></div></div><br type='attribution'></div></body></html><html>Hi Everyone,<br /><br />I'm using Piraeus thus DRBD in my home k8s cluster which was running on CentOS 8 until Red Hat pulled its plug recently. After some evaluation of the available options, I decided to upgrade to the new rolling release CentOS Stream which only resulted in minor or patch-level changes in packages, however, my DRBD kernel-module-injector container stopped working.<br /><br />I opened the following ticket in the Piraeus repo with detailed information: https://github.com/piraeusdatastore/piraeus-operator/issues/137<br />There Joel told me the following:<br /><br />> It appears that Red Hat have made some changes in kernel version 4.18.0-257 which are not yet covered by the DRBD compatibility layer. In particular, they have removed the function blk_alloc_queue. I suggest you downgrade to a kernel version supported by DRBD, such as 4.18.0-240.<br /><br />I tried to downgrade the kernel package but dnf says there is no previous option to downgrade to.<br />Although I'm not a LINBIT customer, may I humbly ask for support of CentOS Stream with the new kernel version? If it takes a couple of weeks, I can wait as no mission critical workloads are depending on Piraeus in my case. However, I can also imagine more and more people upgrading to CentOS Stream, so they would also benefit, and eventually the new RHEL version will also get the new kernel.<br /><br />Kind regards,<br />Immánuel Fodor</html>