[Pacemaker] fenced node can not become online after rejoin it to the cluster

[bin chen]

Hi,all.
I use the corosync 2.0 + pacemaker 1.1.7.I have three nodes in the
cluster,h183,h185,h186 and there is a stonith resource in the cluster.
Then I disable h185`s network so that it can not communicate with other
nodes. I see that my cluster calls the fence script to fence h185 and the
status of h185 is UNCLEAN.

Node h185 (956999872): UNCLEAN (offline)
Online: [ h183 h186 ]

 Clone Set: fence-clone [fence]
     Started: [ h183 h185 h186 ]
     Stopped: [ fence:3 ]

After fence finished ,h185 becomes OFFLINE:

Online: [ h183 h186 ]
OFFLINE: [ h185]

 Clone Set: fence-clone [fence]
     Started: [ h183 h186 ]
     Stopped: [ fence:1 fence:3 ]

Then I enable the networking of h185,h185 is still OFFLINE:
Online: [ h183 h186 ]
OFFLINE: [ h185 ]

 Clone Set: fence-clone [fence]
     Started: [ h183 h186 ]
     Stopped: [ fence:1 fence:3 ]

when I kill the pacemakerd and restart it in h185,h185`s status become
online.

log :
2012-11-05T01:27:26.639034+08:00 h183 crmd[2441]:     info:
pcmk_quorum_notification: Membership 492880: quorum retained (3)
2012-11-05T01:27:26.639060+08:00 h183 crmd[2441]:     info:
ais_status_callback: status: h185 is now member (was lost)
2012-11-05T01:27:26.639065+08:00 h183 crmd[2441]:     info:
crm_update_peer: Node h185: id=956999872 state=member (new) addr=(null)
votes=0 born=0 seen=492880 proc=00000000000000000000000000111312
2012-11-05T01:27:26.639084+08:00 h183 crmd[2441]:     info: send_ais_text:
Peer overloaded or membership in flux: Re-sending message (Attempt 1 of 20)

who can help me?
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