P

[Dotan Barak <dotanba-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On 12/06/2010 03:22, Ding Dinghua wrote:
> 2010/6/11 Dotan Barak<dotanba-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>:
>    
>> Hi.
>>
>> On 11/06/2010 10:51, Ding Dinghua wrote:
>>      
>>> Hi all:
>>>           I'm using RDMA to do fs-metadata mirror between nodes. I
>>> encountered a strange problem when the program was running:
>>> Complete queue handler reported that the  RDMA-Write operation failed,
>>>   the status of  corresponding "struct ib_wc" is "IB_WC_RETRY_EXC_ERR".
>>> The problem is encountered randomly. I don't know the meaning of this
>>> error code as well as what to do next. Would anyone give me some tips?
>>> thanks a lot.
>>>
>>>        
>> Do you sync between the sides before closing the QPs?
>>      
> Can you say it more detail? thanks.
>    
If you try to send a message from local QP to a remote QP before the 
remote QP is in RTR state (or after it was closed/transferred to the 
ERROR state),
you may get RETRY EXCEEDED, because there isn't any QP in the remote 
side that can accept your message (and send a response).

How do you connect the QPs? (And how do you close the connection between 
them)

Dotan
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