[LU-16137] Lustre 2.15.1 server kernel issue (RHEL 8.6)

• Type: Bug
• Resolution: Unresolved
• Priority: Blocker
• Affects Version/s: Lustre 2.15.1
• Environment: Rocky Linux 8.6

Epic/Theme

Kernel

• Severity: 3
• Assignee: WC Triage
• Reporter: Jean-Baptiste Moulin

Description

Hi,

I've just installed the 2.15.1 server version for RHEL 8.6 on my Rocky Linux server but it looks like the rpm has been compiled for the 4.18.0-372.9.1.el8_lustre.x86_64 kernel instead of the official 4.18.0-372.9.1.el8.x86_64.

When I perform a rpm -pql, I see the rpm is looking for .ko files in /lib/modules/4.18.0-372.9.1.el8_lustre.x86_64/

I do not wish to use the lustre kernel and stay on the official one as I used to do with previous versions.
Is there any chance you plan to compile the lustre server kmod rpm for the official kernel ?

Thanks and regards,

Issue Links

• is related to: LU-16109 Whamcloud created 2.15.1 packages won't install, symbol conflict.
• is related to: LU-16059 Fix dkms server build installation
• is related to: LU-16138 remove need for T10-PI block integrity patches from server kernel

Comments

[Andreas Dilger]

The Lustre-patched server kernel is only required for storage that supports the SCSI T10-PI feature and is configured to use it (most storage does not). As such, it is possible to build and run a Lustre server on an unpatched kernel, but we do not currently build and test RPMs against an unpatched kernel. However, you are free to build such RPMs yourself.

We are investigating how to remove the requirement for the block-integrity patches from the el8.x and later server kernels, at which point we can move build and testing over to unpatched server kernels, but that work has not been done yet.