Administering Device Groups

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As your cluster requirements change, you might need to add, remove, or modify the device groups on your cluster. Oracle Solaris Cluster provides an interactive interface called clsetup that you can use to make these changes. The clsetup utility generates cluster commands. Generated commands are shown in the examples at the end of some procedures. The following table lists tasks for administering device groups and provides links to the appropriate procedures in this section.

Note - You can also bring a device group online and take it offline by using the Oracle Solaris Cluster Manager browser interface. For Oracle Solaris Cluster Manager log-in instructions, see How to Access Oracle Solaris Cluster Manager.

Oracle Solaris Cluster software automatically creates a raw-disk device group for each disk and tape device in the cluster. However, cluster device groups remain in an offline state until you access the groups as global devices.

Caution - Do not run metaset -s setname -f -t on a cluster node that is booted outside the cluster if other nodes are active cluster members and at least one of them owns the disk set.

Table 7 Task Map: Administering Device Groups

Task	Instructions
Update the global-devices namespace without a reconfiguration reboot by using the `cldevice populate` command	How to Update the Global-Devices Namespace
Change the size of a `lofi` device that is used for the global-devices namespace	How to Change the Size of a lofi Device That Is Used for the Global-Devices Namespace
Move an existing global-devices namespace	How to Migrate the Global-Devices Namespace From a Dedicated Partition to a lofi Device How to Migrate the Global-Devices Namespace From a lofi Device to a Dedicated Partition
Add Solaris Volume Manager disksets and register them as device groups by using the `metaset` command	How to Add and Register a Device Group (Solaris Volume Manager)
Add and register a raw-disk device group by using the `cldevicegroup` command	How to Add and Register a Device Group (Raw-Disk)
Add a named device group for ZFS by using the `cldevicegroup` command	How to Add and Register a Replicated Device Group (ZFS)
Remove Solaris Volume Manager device groups from the configuration by using the `metaset` and `metaclear` commands	How to Remove and Unregister a Device Group (Solaris Volume Manager)
Remove a node from all device groups by using the `cldevicegroup`, `metaset`, and `clsetup` commands	How to Remove a Node From All Device Groups
Remove a node from a Solaris Volume Manager device group by using the `metaset` command	How to Remove a Node From a Device Group (Solaris Volume Manager)
Remove a node from a raw-disk device group by using the `cldevicegroup` command	How to Remove a Node From a Raw-Disk Device Group
Change device group properties by using `clsetup` to generate `cldevicegroup`	How to Change Device Group Properties
Display device groups and properties by using the `cldevicegroup show` command	How to List a Device Group Configuration
Change the desired number of secondaries for a device group by using `clsetup` to generate `cldevicegroup`	How to Set the Desired Number of Secondaries for a Device Group
Switch the primary for a device group by using the `cldevicegroup switch` command	How to Switch the Primary for a Device Group
Put a device group in maintenance state by using the `metaset` command	How to Put a Device Group in Maintenance State