Georgios The plan is to finalize which the next LTS release will be - 2.17 vs 2.18 - by the end of this month. Whatever the outcome, there will be support for RHEL 10.x clients.
Peter From: lustre-discuss <[email protected]> on behalf of Georgios Magklaras via lustre-discuss <[email protected]> Date: Tuesday, June 2, 2026 at 4:32 AM To: [email protected] <[email protected]> Subject: Re: [lustre-discuss] RHEL 9.8 and 10.2 support For David: For RHEL 10.2, there are patches (including one suggestion from me) as part of LU 20312: https://jira.whamcloud.com/browse/LU-20312 We are of course in the process of testing this. For Peter: We also echo the LTS issue. We are using primarily 2.15.x, with 2.16.1 at a smaller part of our production. 2.17.x is used as part of our test environment, because we are encountering issues with 2.16.1 . For RHEL 10.x, we would like to know what would be the LTS Lustre release. Best regards, GM -- -- -- Georgios Magklaras PhD Chief Engineer IT Infrastructure/HPC The Norwegian Meteorological Institute https://www.met.no/ https://www.steelcyber.com/georgioshome/ On Tue, 2 Jun 2026 at 11:45, Hans Henrik Happe via lustre-discuss <[email protected]<mailto:[email protected]>> wrote: The work is tracked in LU-20071<https://jira.whamcloud.com/browse/LU-20071> for the RHEL 9.8 and there is a patch. Haven't tested it myself. You need RHEL 9.8 to get a kernel that fixes all the known root escalation security issues. So I agree that we are in a bit of a limbo until an RHEL 9.8 LTS version of Lustre is ready. However, I think Alma did a special security kernel for RHEL 9.7. I know Rocky did. On 01/06/2026 19.16, Peter Jones via lustre-discuss wrote: So do I understand correctly that your concern is that: 1. there are vulnerabilities in RHEL 10.2 that also affect RHEL 10.1 but there are no updates for RHEL 10.1 once RHEL 10.2 is GA 2. RHEL 10.x is not supported by the current Lustre LTS branch (2.15.x) If so, the good news is that we expect to have a newly designated LTS branch in the near future that will support RHEL 10.x clients. Longer term, there are efforts to get Lustre into the upstream kernel, which would completely eliminate any of these issues. In the meantime, if you are ever in the position of wanting to move to kernel versions ahead of formal support being available, my recommendation would be to experiment with a limited number of clients (perhaps even just one) before rolling out across all the clients. From: David Cohen <[email protected]><mailto:[email protected]> Date: Monday, June 1, 2026 at 8:41 AM To: Peter Jones <[email protected]><mailto:[email protected]> Cc: lustre-discuss <[email protected]><mailto:[email protected]> Subject: Re: [lustre-discuss] RHEL 9.8 and 10.2 support Hi Peter, For the EL 10.1 client I was using version 17.0 which was the only version to support EL 10. After upgrading to EL 10.2 the client lost the storage mount. I'm not updating the EL9.7 clients, not to risk losing the storage mount. They are running the 2.15 LTS Lustre. On the servers I am still using the 2.15 version on EL 8.10 as I prefer to use the LTS version, and there is no LTS server support beyond EL 8.10. This complex matrix just emphasizes how much Lustre is a restrictive factor for upgrades. David On Mon, Jun 1, 2026 at 4:48 PM Peter Jones <[email protected]<mailto:[email protected]>> wrote: David Could you please clarify what version of Lustre you are using today for both servers and clients? Also, are you using ldiskfs or ZFS as the backend filesystem? Peter From: David Cohen <[email protected]<mailto:[email protected]>> Date: Sunday, May 31, 2026 at 8:25 PM To: Peter Jones <[email protected]<mailto:[email protected]>> Cc: lustre-discuss <[email protected]<mailto:[email protected]>> Subject: Re: [lustre-discuss] RHEL 9.8 and 10.2 support Hi Peter, The new kernel presented with EL 10.2 presents changes preventing DKMS from recompiling Lustre modules. There is even a Jira ticket following the issue since the beta, highlighting the security fixes in the new kernels. https://jira.whamcloud.com/browse/LU-20070 David On Mon, Jun 1, 2026 at 12:19 AM Peter Jones <[email protected]<mailto:[email protected]>> wrote: David Could you please elaborate as to what you feel is missing today? Lustre clients are patchless, so I would expect that if a security update is issued for a given supported release of RHEL that users would just apply the kernel update and weak updates would take care of the rest with no need to get any updates to Lustre... Peter From: lustre-discuss <[email protected]<mailto:[email protected]>> on behalf of David Cohen via lustre-discuss <[email protected]<mailto:[email protected]>> Date: Sunday, May 31, 2026 at 5:31 AM To: lustre-discuss <[email protected]<mailto:[email protected]>> Subject: [lustre-discuss] RHEL 9.8 and 10.2 support Hi, With the latest critical kernel vulnerabilities, updates are no longer optional. This puts Lustre on the critical path for cluster security. Is there a plan to address this necessity by releasing Lustre client versions outside of the half a year cycle to support the new kernels? David _______________________________________________ lustre-discuss mailing list [email protected]<mailto:[email protected]> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org _______________________________________________ lustre-discuss mailing list [email protected]<mailto:[email protected]> http://lists.lustre.org/listinfo.cgi/lustre-discuss-lustre.org
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