On Tue, Aug 02 2016, Guoqing Jiang wrote:
>
>> Does it work if we move the mddev lock to
>> process_recvd_msg?
>
> I tried that, but It still have lock issue, eg, when node B and C have 
> status
> as "resync=PENDING", then try to stop the resyncing array in node A.
>

Maybe the reconfig_mutex locking needs to go down in
process_suspend_info() ?? That is the only part that calls quiesce.

NeilBrown