[lustre-discuss] RHEL 9.8 and 10.2 support

[Peter Jones]

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 <cdavid at physics.technion.ac.il>
Date: Monday, June 1, 2026 at 8:41 AM
To: Peter Jones <pjones at thelustrecollective.com>
Cc: lustre-discuss <lustre-discuss at lists.lustre.org>
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 <pjones at thelustrecollective.com<mailto:pjones at thelustrecollective.com>> 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 <cdavid at physics.technion.ac.il<mailto:cdavid at physics.technion.ac.il>>
Date: Sunday, May 31, 2026 at 8:25 PM
To: Peter Jones <pjones at thelustrecollective.com<mailto:pjones at thelustrecollective.com>>
Cc: lustre-discuss <lustre-discuss at lists.lustre.org<mailto:lustre-discuss at lists.lustre.org>>
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 <pjones at thelustrecollective.com<mailto:pjones at thelustrecollective.com>> 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 <lustre-discuss-bounces at lists.lustre.org<mailto:lustre-discuss-bounces at lists.lustre.org>> on behalf of David Cohen via lustre-discuss <lustre-discuss at lists.lustre.org<mailto:lustre-discuss at lists.lustre.org>>
Date: Sunday, May 31, 2026 at 5:31 AM
To: lustre-discuss <lustre-discuss at lists.lustre.org<mailto:lustre-discuss at lists.lustre.org>>
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
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