Figure 6

R oot

M irror

Arbitration for Data Integrity in Serviceguard Clusters

Use of a Lock LUN as the Cluster Lock

The operation of the lock LUN is shown in Figure 6. The node that acquires the lock (in this case node 2) continues running in the cluster. The other node halts.

Lock LUN Operation

node 1

disk array

node 2

 

 

 

 

 

 

L in u x

R o o t

 

 

pkg2

M irro r

 

 

H A

 

 

 

 

 

so ftw are

 

 

 

 

 

 

 

 

 

 

 

 

 

H ub

 

 

 

 

 

Hub

 

 

 

19

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HP Serviceguard manual Oot Irror, Lock LUN Operation