[Ocfs2-devel] Re Could the master return DLM_NORMAL when unlock nonexistent locks from other node?

[Shichangkuo]

Hi Junxiao
        Yes, we have already merged this patchset.

On 03/15/2016 09:55 AM, Shichangkuo wrote:
> Hi all,
>     When NodeA want to unlock lock-res1, and it send message to NodeB, but in NodeB any lock queues (granted, converting, blocked) could not find this lock for some unknown reason, then NodeB reply DLM_IVLOCKID.
>     In this situation, NodeA bug. The detail is described as follows.
>
>         NODEA                                              NODEB
> ocfs2_drop_lock
>     ocfs2_dlm_unlock
>         o2cb_dlm_unlock
>             dlmunlock
>                 dlmunlock_remote        ---->   send message to master
>                                                   dlm_unlock_lock_handler
>                                                       return DLM_IVLOCKID
>     BUG()
>
> I think it's no nessary to let NodeA bug, it just like we removed an nonexistent file.
> Could NodeB return DLM_NORMAL?
No. This is a lock inconsistent bug. What kernel version are you using?
Please check whether patchset "ocfs2: o2net: don't shutdown connection when idle timeout" is there. Without this, this inconsistent lock can be triggered.

Thanks,
Junxiao.
>
> Thanks
> Changkuo
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