The QHASM.Cluster_Resource_Group_List view contains information about the list of cluster resource groups in a cluster.

The values returned for the columns in this view contain information from the DSPCRGINF CL command but represent them differently.

Authorization

The authorization ID of the statement must include the following privileges:

Authorization as required by PowerHA product functionality.
OBJOPR and *READ authority on QHASM/CRG_LIST.
Input/output system configuration (*IOSYSCFG) special authority.

Result Table

The table describes the columns in the view. Here, the system name used is CRG_LIST. The schema is QHASM.

Column Name	System Column Name	Data Type	Description

Column Name	System Column Name	Data Type	Description
CLUSTER	CLUSTER	VARCHAR(10)	The name of the cluster
CONSISTENT_INFORMATION	CLUSTS	VARCHAR(3)	Indicates whether or not the displayed information is consistent with other nodes in the cluster. YES The information is consistent for all active nodes in the cluster. NO The information retrieved from the node running the command may not be consistent with all the active nodes in the cluster. In order to obtain consistent information run the command on an active node, or start this node and run the command again.
CLUSTER_RESOURCE_GROUP	CRG	VARCHAR(10)	The name of the Cluster Resource Group (CRG).
CRG_TYPE	CRGTYPE	VARCHAR(5)	The type of the cluster resource group. APP The cluster resource group is an application cluster resource group. DATA The cluster resource group is a data cluster resource group. DEV The cluster resource group is a device cluster resource group. PEER The cluster resource group is a peer cluster resource group.
CRG_STATUS	CRGSTS	VARCHAR(30)	The status of the cluster resource group. ACTIVE The resources managed by the cluster resource group are currently resilient. INACTIVE The resources managed by the cluster resource group are not currently resilient. INDOUBT The information contained within the cluster resource group object may not be accurate. This status occurs when an exit program is called with an action code of Undo and fails to complete successfully. RESTORED The cluster resource group object was restored on this node and has not been copied to the other nodes in the recovery domain. When Cluster Resource Services is started on this node, the cluster resource group will be synchronized with the other nodes in the recovery domain and its status set to Inactive. ADD PENDING A new node is in the process of being added to the recovery domain of a cluster resource group. If the exit program is successful the status is reset to its value at the time the command was called. If the exit program fails and the original state cannot be recovered, the status is set to Indoubt. DELETE PENDING Cluster resource group object is in the process of being deleted. When the exit program completes the cluster resource group is deleted from all nodes in the recovery domain. CHANGE PENDING The cluster resource group is in the process of being changed. If the exit program is successful the status is reset to the value at the time the command was called. If the exit program fails and the original state cannot be recovered, status is set to Indoubt. END PENDING Resilience for the cluster resource group is in the process of ending. If the exit program is successful, the status is set to Inactive. If the exit program fails and the original state cannot be recovered, the status is set to Indoubt. INITIALIZE PENDING A cluster resource group is being created and is in the process of being initialized. If the exit program is successful, the status is set to Inactive. If the exit program fails, the cluster resource group will be deleted from all nodes. REMOVE PENDING A node is in the process of being removed from the recovery domain of the cluster resource group. If the exit program is successful, the status is reset to the value at the time the command was called. If the exit program fails and the original state cannot be recovered, the status is set to Indoubt. START PENDING Resilience is in the process of starting for the cluster resource group. If the exit program is successful, the status is set to Active. If the exit program fails and the original state cannot be recovered, the status is set to Indoubt. SWITCHOVER PENDING The Change Cluster Resource Group Primary (CHGCRGPRI) command was called, a failure of a cluster resource group occurred, or a node failed, causing a switchover or failure to begin. The first backup node is in the process of becoming the primary node. If the exit program is successful, the status is set to Active. If the exit program fails and the original state cannot be recovered, the status is set to Indoubt. DELETE PENDING Cluster resource group object is being deleted by the Delete Cluster Resource Group (DLTCRG) command. The Cluster resource group object is only removed from the node running the command. This is not a distributed request. At the completion of the command, the cluster resource group is deleted from the node. ADD DEVICE PENDING A device entry is being added to a cluster resource group. If the exit program is successful, the status is reset to its value at the time the command was called. If the exit program fails and the original state cannot be recovered, the status is set to Indoubt. REMOVE DEVICE PENDING A device entry is being removed from a cluster resource group. If the exit program is successful, the status is reset to its value at the time the command was called. If the exit program fails and the original state cannot be recovered, the status is set to Indoubt. CHANGE DEVICE PENDING A device entry is being changed in a cluster resource group. If the exit program is successful, the status is reset to its value at the time the command was called. If the exit program fails and the original state cannot be recovered, the status is set to Indoubt. CHANGE STATUS PENDING The status of a node in the cluster resource group's current recovery domain is being changed. If the change is successful, the status is reset to its value at the time the Change Cluster Node Entry (CHGCLUNODE) command was called. Failure of the exit program causes the status of the cluster resource group to be set to Indoubt. If a backup node is reassigned as the primary node for a resilient device cluster resource group and the ownership of the device cannot be transferred to the new primary node, the status is set to Indoubt. EXIT POINT OPERATION PENDING An exit point operation is in progress.
PRIMARY_NODE	PRIMARY	VARCHAR(8) Nullable	The name of the node that has a current node role of primary. Contains the null value if this is peer CRG.
CONTAINER This column is not supported on IBM i 7.2 or IBM i 7.3	CNR	VARCHAR(10) Nullable	The container managing this cluster resource group (CRG). Contains the null value if this is a stand-alone CRG that is not managed by a container.

Examples

Example 1 - Get the list of cluster resource groups

Returns the list of cluster resource groups, the primary node, and its status.

SELECT CLUSTER_RESOURCE_GROUP, CRG_TYPE, CRG_STATUS, PRIMARY_NODE
  FROM QHASM.CRG_LIST;

Example 1 - Sample Output

CLUSTER_RESOURCE_GROUP	CRG_TYPE	CRG_STATUS	PRIMARY_NODE

CLUSTER_RESOURCE_GROUP	CRG_TYPE	CRG_STATUS	PRIMARY_NODE
ERP01	*APP	ACTIVE	PROD
GMIRCRG	*DEV	ACTIVE	PROD

Example 2 - Determine switch readiness

Indicates if a device cluster resource group (CRG) is ready to do a cross-site switchover with the READY_TO_SWITCH column. Contains YES if ready to switch, or NO if not ready to switch. This also provides supporting data for why the CRG is or is not ready to switch. For example, the CRG status, PowerHA Session Status, or CRG recovery domain node status.

SELECT CRG.CLUSTER_RESOURCE_GROUP, CRG.CRG_STATUS, SSN_INFO.SESSION_NAME, SSN_INFO.ASP_DEVICE,
       SSN_INFO.COPY_STATUS, RCYDMN_NODES.*, (
       CASE
         WHEN (crg.crg_status = 'ACTIVE' AND
             ssn_info.copy_status = 'ACTIVE' AND
             rcydmn_nodes.number_inactive_backup_nodes = 0 AND
             rcydmn_nodes.number_ineligible_backup_nodes = 0 AND
             rcydmn_nodes.number_partitioned_backup_nodes = 0) THEN 'YES'
         ELSE 'NO'
       END) AS READY_TO_SWITCH
  FROM QHASM.CRG_LIST crg, (
         SELECT coalesce(sum(
                    case node_status
                      when 'INACTIVE' then 1
                      else 0
                    end), 0) number_inactive_backup_nodes, coalesce(sum(
                    case node_status
                      when 'INELIGIBLE' then 1
                      else 0
                    end), 0) number_ineligible_backup_nodes, coalesce(sum(
                    case node_status
                      when 'PARTITIONED' then 1
                      else 0
                    end), 0) number_partitioned_backup_nodes
           FROM qhasm.crg_list crg, table (
                  qhasm.crg_recovery_domain(
                    cluster_resource_group => crg.cluster_resource_group)
                ) rcydmn
           WHERE rcydmn.node_status != 'ACTIVE' and
                 rcydmn.current_node_role > 0
       ) as rcydmn_nodes, 
       (SELECT DISTINCT SESSION_NAME, CLUSTER_RESOURCE_GROUP FROM QHASM.SESSION_LIST) AS ssn_list, 
       table (
         QHASM.SESSION_INFO(session => ssn_list.session_name)
       ) ssn_info
  WHERE crg.crg_type = '*DEV' and
        crg.cluster_resource_group = ssn_list.cluster_resource_group;

Example 2 - Sample Output

CLUSTER_RESOURCE_GROUP	CRG_STATUS	SESSION_NAME	ASP_DEVICE	COPY_STATUS	NUMBER_INACTIVE_BACKUP_NODES	NUMBER_INELIGIBLE_BACKUP_NODES	NUMBER_PARTITIONED_BACKUP_NODES	READY_TO_SWITCH

CLUSTER_RESOURCE_GROUP	CRG_STATUS	SESSION_NAME	ASP_DEVICE	COPY_STATUS	NUMBER_INACTIVE_BACKUP_NODES	NUMBER_INELIGIBLE_BACKUP_NODES	NUMBER_PARTITIONED_BACKUP_NODES	READY_TO_SWITCH
SVCGMIRCRG	ACTIVE	SVCMMIRSSN	PRODIASP	ACTIVE	0	0	0	YES
GEOMIRCRG	ACTIVE	GEOMIRSSN	GEOASP	DETACHED	0	1	0	NO

SQLSTATE Values

Errors and warnings returned by this function are returned as SQL state values. Possible SQLSTATE values returned by this view are:

SQLSTATE	Message

SQLSTATE	Message
42501	Not authorized to object CRG_LIST in QHASM type *FILE
42502	CURRENT USER DOES NOT HAVE *IOSYSCFG SPECIAL AUTHORITY
560CR	NO VALID LICENSE FOR IBM POWERHA FOR I FOUND
560CR	POWERHA FOR I ENTERPRISE EDITION NOT INSTALLED ON NODE &1
560CR	GRACE PERIOD EXPIRED FOR POWERHA FOR I ENTERPRISE EDITION ON NODE &1
560CR	USAGE LIMIT EXCEEDED FOR POWERHA FOR I ENTERPRISE EDITION ON NODE &1
560CR	POWERHA FOR I STANDARD EDITION NOT INSTALLED ON NODE &1
560CR	GRACE PERIOD EXPIRED FOR POWERHA FOR I STANDARD EDITION ON NODE &1
560CR	USAGE LIMIT EXCEEDED FOR POWERHA FOR I STANDARD EDITION ON NODE &1
560CR	POWERHA FOR I STANDARD EXPRESS NOT INSTALLED ON NODE &1
560CR	GRACE PERIOD EXPIRED FOR POWERHA FOR I STANDARD EXPRESS ON NODE &1
560CR	USAGE LIMIT EXCEEDED FOR POWERHA FOR I STANDARD EXPRESS ON NODE &1
58004	AN UNEXPECTED ERROR OCCURRED. SEE JOBLOG FOR MORE INFORMATION

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QHASM.CLUSTER_RESOURCE_GROUP_LIST View