[LU-2850] Client support for upstream 3.8 kernel

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.5.0, Lustre 2.6.0
• Affects Version/s: Lustre 2.5.0
• Labels: emc patch
• Assignee: Yang Sheng
• Reporter: Peng Tao

Description

Update client code to support upstream 3.8 kernel.

Issue Links

• is related to: LU-2686 Kernel update for 3.7.2-201.fc18

Comments

[James A Simmons]

Thanks Cory. For 3.8 to work properly you need the following patches:

http://review.whamcloud.com/#/c/5974 - LU-2686
http://review.whamcloud.com/#/c/5763 - LU-2987

http://review.whamcloud.com/#/c/6715 - LU-3483
http://review.whamcloud.com/#/c/6726 - LU-3484

Optional cleanup patch

http://review.whamcloud.com/#/c/5505 - LU-2800

[Cory Spitz]

FYI, LU-3484 and LU-3486 are needed for 3.8 kernels (for NFS export).

[Keith Mannthey (Inactive)]

http://review.whamcloud.com/5655 has landed.

[James A Simmons]

The only thing is I have modify http://review.whamcloud.com/#change,5655 due to conflicts with the patch from LU-2059 and LU-2800 autoconf patch. Needs updating as well. At this point it is hard to say which will land first.

[Alexey Shvetsov (Inactive)]

Yep. I run it on small production cluster with lustre/zfs 2.4rc2
servers are 3.8.6 clients are both 3.8.6 and 3.9.4

[James A Simmons]

With the above listed patches and patches from LU-3079 I get this.

LNet: HW CPU cores: 8, npartitions: 2
alg: No test for crc32 (crc32-table)
alg: No test for adler32 (adler32-zlib)
LNet: Added LNI 10.37.248.7@o2ib1 [8/2560/0/180]
Lustre: Lustre: Build Version: 2.4.50-g2f41b68-CHANGED-3.9.4
Lustre: Layout lock feature supported.
Lustre: Mounted lustre-client

It appears to work. We have Lustre 3.9.4 clients. With this I can start my work on ldiskfs for 3.9.4.

[James A Simmons]

The new recipe for this is against master is:

http://review.whamcloud.com/#change,5973 - LU-2686
http://review.whamcloud.com/#change,5974
http://review.whamcloud.com/#change,5763 - LU-2987
http://review.whamcloud.com/#change,5613 - LU-2850
http://review.whamcloud.com/#change,5655

I have tested with the currently support RHEL6.4 kernel. I'm working on getting a 3.9.4 kernel going to test against soon.

[James A Simmons]

Peter can you label this as a 2.5 item

[Peter Jones]

Alexey

2.4.0 is frozen now. This work will land in later releases

Peter

[Alexey Shvetsov (Inactive)]

Are there plans to land all this patches before 2.4.0 release? Or they will be postponed to 2.4.x or 2.5.x?

[Alexey Shvetsov (Inactive)]

BTW for 3.9 kernel support. Patches may be simplyfyed if stuff for ancient kernels (<2.6.32) will be cleaned up. See LU-2800