[LU-14690] RHEL8.4 support

• Status: Resolved
• Project: Lustre
• Fix Version/s: Lustre 2.12.7, Lustre 2.15.0
• Type: Improvement
• Priority: Minor
• Reporter: Olaf Faaland
• Assignee: Jian Yu
• Resolution: Fixed
• Labels: llnl

Description

Update master (client and server) for compatability with RHEL8.4. Backport patches necessary for the client to b2_12.

Issue Links

• is duplicated by: LU-14691 support for RHEL 8.4
• is related to: LU-14829 kernel update [RHEL8.4 4.18.0-305.7.1...

Comments

[Olaf Faaland]

For my tracking purposes, my local ticket is TOSS5204

[Jian Yu]

Patch for RHEL 8.4 client support on master branch: https://review.whamcloud.com/43725

[Olaf Faaland]

Thanks!

Looks like 8.4 was released today:
https://access.redhat.com/discussions/6050441

[Jian Yu]

Thanks Olaf for the info. The kernel version is 4.18.0-305.el8. Let me update the patch.

[Gerrit Updater]

Jian Yu ([e-mail]) uploaded a new patch: https://review.whamcloud.com/43744
Subject: LU-14690 kernel: new kernel [RHEL 8.4 4.18.0-305.el8]
Project: fs/lustre-release
Branch: b2_12
Current Patch Set: 1
Commit: d54c0efd7556c1682c67802f93c5dd44162c3752

[Olaf Faaland]

Hi Jian,

I pushed an update for the b2_12 patch to https://review.whamcloud.com/43744 (patch set 2).

It's your "new kernel" patch from v1 on top of 3 backports:

• def078c LU-13783 osc: handle removal of NR_UNSTABLE_NFS
• 973d905 LU-12355 llite: MS_* flags and SB_* flags split
• 92f2b07 LU-12355 llite: totalram_pages changed to atomic_long_t

If you've already started on this and I messed anything up for you, my apologies.

thanks,
Olaf

[Jian Yu]

No problem, Olaf. I've been trying to resolve the build failures on b2_12 and updated patch https://review.whamcloud.com/40379 today. Thank you for updating patches to resolve the remaining failures. I'm proceeding to work on the server support on master branch.

[Olaf Faaland]

Great, thanks Jian.

Do you have any sense whether https://review.whamcloud.com/#/c/43725/ is sufficient for a ZFS server?

Right now, we build 2.14 server (zfs only) + client and 2.12 client for RHEL 8. We haven't yet started building ldiskfs for 2.14. So when you think we might have good patch sets for those, I'd love to know. We'll then start our own testing in parallel with testing here.

[Gerrit Updater]

Jian Yu ([e-mail]) uploaded a new patch: https://review.whamcloud.com/43791
Subject: LU-14690 kernel: RHEL 8.4 server support
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 4c4c16c2d970f20a50075058ad4c583d92c69ad4

[Jian Yu]

Welcome, Olaf. I have not tried the ZFS server build and just pushed the above patch to support the server. Will see the Jenkins build result.

[Jian Yu]

A new kernel version is available: 4.18.0-305.3.1.el8_4
https://access.redhat.com/errata/RHSA-2021:2168?sc_cid=701600000006NHXAA2

[Olaf Faaland]

Jian, please see LU-14733. Thank you.

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/43725/
Subject: LU-14690 kernel: new kernel [RHEL 8.4 4.18.0-305.3.1.el8_4]
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: f269497ac7a730880e590eb9e8405f082522c5e0

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/43744/
Subject: LU-14690 kernel: new kernel [RHEL 8.4 4.18.0-305.3.1.el8_4]
Project: fs/lustre-release
Branch: b2_12
Current Patch Set:
Commit: 7ebcba96e3442fb7d3cea3e15a4d81433c58da22

[SC Admin (Inactive)]

Hiya,

I think 2.12 client + RHEL 8.4 also requires LU-13182. that ticket perfectly describes the issue I'm seeing.

I grabbed https://review.whamcloud.com/40221/ which applies cleanly to 2.12.6 and tested it, and it's fixed the problem for me.

without the MAP_POPULATE patch, nodes with root-on-lustre don't reboot and logrotate hangs.

RHEL/centos 8.3 didn't need this patch, so I guess it's an 8.4 kernel change.

cheers,
robin

[Jian Yu]

Thank you, Robin.
The back-ported patch for LU-13182 on Lustre b2_12 branch is https://review.whamcloud.com/43958.

 

[Gerrit Updater]

Oleg Drokin ([e-mail]) merged in patch https://review.whamcloud.com/43791/
Subject: LU-14690 kernel: RHEL 8.4 server support
Project: fs/lustre-release
Branch: master
Current Patch Set:
Commit: 644a14196810f0c6b663957720414e042d2ae965

[Peter Jones]

Landed for 2.15

[Gerrit Updater]

Gian-Carlo DeFazio ([e-mail]) uploaded a new patch: https://review.whamcloud.com/44173
Subject: LU-14690 kernel: new kernel [RHEL 8.4 4.18.0-305.3.1.el8_4]
Project: fs/lustre-release
Branch: b2_14
Current Patch Set: 1
Commit: bfe7e28483fc1a7bab5016b367b0f1ad48507c3f

[Gerrit Updater]

Gian-Carlo DeFazio ([e-mail]) uploaded a new patch: https://review.whamcloud.com/44174
Subject: LU-14690 kernel: RHEL 8.4 server support
Project: fs/lustre-release
Branch: b2_14
Current Patch Set: 1
Commit: 87a95794ca0827b61d20ccd901f07e3254423b91

[Olaf Faaland]

Looks good on our test system.

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/44173/
Subject: LU-14690 kernel: new kernel [RHEL 8.4 4.18.0-305.3.1.el8_4]
Project: fs/lustre-release
Branch: b2_14
Current Patch Set:
Commit: ee34810da63bab3fa5a17e3898b5ddf67713b552

[Gerrit Updater]

"Oleg Drokin <[e-mail]>" merged in patch https://review.whamcloud.com/44174/
Subject: LU-14690 kernel: RHEL 8.4 server support
Project: fs/lustre-release
Branch: b2_14
Current Patch Set:
Commit: 20624f3a031525bb6bd19c9b1a1288eb05235670