How to Add and Register a Replicated Device Group (ZFS)

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Use this procedure to create a replicated ZFS device group that is managed by HAStoragePlus.

To create a ZFS storage pool (zpool) that does not use HAStoragePlus, instead go to How to Configure a Local ZFS Storage Pool Without HAStoragePlus.

Before You Begin

To replicate ZFS, you must create a named device group and list the disks that belong to the zpool. A device can belong to only one device group at a time, so if you already have an Oracle Solaris Cluster device group that contains the device, you must delete the group before you add that device to a new ZFS device group.

The name of the Oracle Solaris Cluster device group that you create (Solaris Volume Manager or raw-disk) must be the same as the name of the replicated device group.

Delete the default device groups that correspond to the devices in the zpool.
For example, if you have a zpool called mypool that contains two devices /dev/did/dsk/d2 and /dev/did/dsk/d13, you must delete the two default device groups called d2 and d13.
```
# cldevicegroup offline dsk/d2 dsk/d13
# cldevicegroup delete dsk/d2 dsk/d13
```

Create a named device group with DIDs that correspond to those in the device group you removed in Step 1.
```
# cldevicegroup create -n pnode1,pnode2 -d d2,d13 -t rawdisk mypool
```
This action creates a device group called mypool (with the same name as the zpool), which manages the raw devices /dev/did/dsk/d2 and /dev/did/dsk/d13.

Create a zpool that contains those devices.

# zpool create mypool mirror /dev/did/dsk/d2 /dev/did/dsk/d13

Create a resource group to manage migration of the replicated devices (in the device group) with only global zones in its nodelist.
```
# clresourcegroup create -n pnode1,pnode2 migrate_srdfdg-rg
```

Create an hasp-rs resource in the resource group you created in Step 4, setting the globaldevicepaths property to a device group of type raw-disk.
You created this device in Step 2.
```
# clresource create -t HAStoragePlus -x globaldevicepaths=mypool \
-g migrate_srdfdg-rg hasp2migrate_mypool
```

Set the +++ value in the rg_affinities property from this resource group to the resource group you created in Step 4.
```
# clresourcegroup create -n pnode1,pnode2 \
-p RG_affinities=+++migrate_srdfdg-rg oracle-rg
```
Create an HAStoragePlus resource (hasp-rs) for the zpool you created in Step 3 in the resource group that you created in either Step 4 or Step 6.
Set the resource_dependencies property to the hasp-rs resource that you created in Step 5.
```
# clresource create -g oracle-rg -t HAStoragePlus -p zpools=mypool \
-p resource_dependencies=hasp2migrate_mypool \
-p ZpoolsSearchDir=/dev/did/dsk hasp2import_mypool
```
Use the new resource group name where a device group name is required.