[Ocfs2-users] ocfs2 cluster becomes unresponsive

[Alexei_Roudnev]

Just into your collection of _strange_ situations. I saw it few month ago.

We built 2 node cluster with iSCSI shared disks. Due to configuration error,
servers got the same nodeID, and
it resulted in flip-flopping connection to the shared disk between them -
fist server catched disk for 5 - 10 seconds, then
second catched disk, then first and so on.

Result - OCFSv2 assigned the same node slot to both nodes, never recognized
that other node was active, and
never fence or diagnose any problem (except uncyncronized IO, of course,
which broke file system in some time).
Looks as heartbeat alghoritm have some flow and don't detect some failures.