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mimic: cephfs: ceph-fuse: client hang because its bad session PipeConnection to mds #29200
to mds. There still has a risk client will hang all the time and which happened in my enviroment a few days ago. Well konw, the start of mds will go through four stages at least(replay, reconnect, rejoin, active). According to current logic, we recived replay mdsmap and marked down pipe will return directly and if we miss the next reconnect mdsmap the client may hang all the time becuase we lost the opportunity due to old_inc equal to new_inc. So we shuold judge if we have lost MDSMap::reconnect by comparing newstate and oldstate. Fixes: http://tracker.ceph.com/issues/39305 Signed-off-by: Guan yunfei <email@example.com> (cherry picked from commit 51c9f5c) Conflicts: src/client/Client.cc - mimic has "kick_maxsize_requests(session); wake_inode_waiters(session);" where master has just "wake_up_session_caps(session, true)
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