Last updated on JUNE 16, 2013
Applies to:Linux OS - Version Oracle Linux 5.8 with Unbreakable Enterprise Kernel [2.6.39] and later
Since ocfs2-1.8, global heartbeat feature is available.
Please note that ocfs2-1.8 only being provided in Oracle UEK2 (2.6.39-xxx).
Oracle UEK (2.6.32-xxx) provides ocfs2-1.6 in which global heartbeat not available.
Global heartbeat: Earlier versions of OCFS2 had its own heartbeat for each mounted volume, which caused a lot of overhead. This has now been changed to what is called "global heartbeat", where there is only one heartbeat/disk/network for all mounted volumes.
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