Changing the disk interaction policy in a cluster that is online
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Changing the disk interaction policy in a cluster that is online

In a cluster that is online, you can change the disk interaction policy from raw to dmp using the vxfenswap utility.

To change the disk interaction policy

1. Make sure system-to-system communication is functioning properly.
2. Make sure that the cluster is online, and check the disk policy that is used.

   # vxfenadm -d

   I/O Fencing Cluster Information:

   ================================

   Fencing Protocol Version: 201

   Fencing Mode: SCSI3

   Fencing SCSI3 Disk Policy: dmp

   Cluster Members:

   * 0 (galaxy)

   1 (nebula)

   RFSM State Information:

   node 0 in state 8 (running)

   node 1 in state 8 (running)

3. On each node in the cluster, edit the /etc/vxfenmode file to change the disk policy.

   cat /etc/vxfenmode

   vxfen_mode=scsi3

   scsi3_disk_policy=raw

4. From any node, start the vxfenswap utility:

   # vxfenswap -g vxfencoorddg [-n]

5. Verify the change in the disk policy.

   vxfenadm -d

   I/O Fencing Cluster Information:

   ================================

   Fencing Protocol Version: 201

   Fencing Mode: SCSI3

   Fencing SCSI3 Disk Policy: raw