On Thu, 2005-01-27 at 13:36 -0500, Lon Hohberger wrote: > However, it should be possible to run GFS as the backend store for > services/resource groups managed by heartbeat, but be aware that > heartbeat's notion of membership and GFS's may not always coincide (e.g. > one might think node X is offline, while the other believes it to be > online). Sorry, forgot to explain the practical implication. As an example: 1 - Heartbeat detects that node A is offline. 2 - Heartbeat STONITHs node A and takes over services. 3 - (30 seconds pass) 4 - GFS detects that node A is offline. 5 - GFS fences node A and recovers node A's journal. 6 - Cluster in sane state. In the above case, it's mostly just annoying for the system administrator and causes node A to be unavailable for longer than necessary. (If GFS locks are held when node A dies, then it becomes a bit more complicated.) -- Lon