[LU-1673] Locking issue with 1.8.x clients talking to 2.2 Servers

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Affects Version/s: Lustre 2.2.0
• Labels: client locking server
• Environment: client 1.8.x server 2.2
• Severity: 2

Epic

client locking server

• Assignee: Yang Sheng
• Reporter: ETHz Support (Inactive)

Description

We noticed that clients running Lustre 1.8.x seem to have trouble locking files hosted on 2.2 Servers.

Comments

[Yang Sheng]

As Lurii commented in gerrit:

Iurii Golovach		Nov 2

Patch Set 1: I would prefer that you didn't submit this

This patch looks obsolete since there are already number of patches which cover this issue:

http://review.whamcloud.com/#change,3722 http://review.whamcloud.com/#change,3202 http://review.whamcloud.com/#change,3203 http://review.whamcloud.com/#change,3725 http://review.whamcloud.com/#change,3727

So close this bug.

[Oleg Drokin]

James, like you correctly mention, that change is only needed for 2.3 interop which is not the case here, so there is no rush to get it included, esp. since there is no official 2.3 release and won't be for some time.

You can get RPMs here: http://build.whamcloud.com/job/lustre-reviews/7975/arch=x86_64,build_type=server,distro=el6,ib_stack=inkernel/artifact/artifacts/RPMS/

[Peter Jones]

http://review.whamcloud.com/#change,3486

[James A Simmons]

Don't forget the patch for http://review.whamcloud.com/#change,3008 as well since it is need to 2.3 <-> 2.2 interop testing,

[Peter Jones]

Yangsheng is working on creating patched RPMs

[ETHz Support (Inactive)]

Could you provide us patched rpms?

Thanks in advance

[Oleg Drokin]

flocks are only taken on MDS, so updating just MDS is fine.

[ETHz Support (Inactive)]

Would we have to patch only the MDS or also all OSTs?
Upgrading all OSTs requires quite some downtime :-/

Could you provide us the rpms patched for 2.2 servers?

Thanks in advance.

[Oleg Drokin]

Hm, I was under impression that the fix for this landed in time for 2.2, but alas.

The patch that fixes this could be found here: http://review.whamcloud.com/#change,2193

[Peter Jones]

Oleg is look into this one