[Ocfs2-devel] dln domain_map is not consistent after a node was fencing

[Shichangkuo]

Hi,

I have three nodes in one cluster. Node1 disconnect TCP with Node2 and Node3, and then fencing by restarting.
When re-mounted LUNA on Node1, I found strange issue: Node1 this it was the only node mounted on LUNA, the kernel log as follows:
Jan  4 16:46:14 cvk12 kernel: [   99.223321] o2dlm: Joining domain 0400EAB0791F4B4C85F3FCB5AAC76A1D ( 5 ) 1 nodes

I don't think Node1 had a mistake by reading heartbeat on other slots.
The most possible reason maybe other nodes responded JOIN_OK_NO_MAP after receiving dlm_query_join messages by Node1.
Threr are two ways to respond JOIN_OK_NO_MAP in dlm_query_join_handler:
    1) dlm->dlm_state == DLM_CTXT_LEAVING
    2) dlm->dlm_state == DLM_CTXT_NEW &&
                    dlm->joining_node == DLM_LOCK_RES_OWNER_UNKNOWN
But neither of them is suitable as node already mounted.
I have no idea about it, If any other encount or familiar with this issue, please let me know.

Thanks,
Changkuo.

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