Node status
The node status identifies the status of the node canister within the system.
Table 1 describes the operational status of a node canister. To display the node status, issue the lsnodecanister command, use the management GUI, or use the service assistant GUI.
| Status | Description |
|---|---|
| Active | The node is online and can process I/O from hosts. |
| Adding | The node canister was added to the clustered system but is not yet
synchronized with the system status. The node canister status changes to Online after
synchronization is complete. Note: A node can stay in the Adding status for a long time. Wait at
least 30 minutes before you take further action. If after 30 minutes the node status is still
Adding, you can delete the node and add it again. If the node that was added is at a lower code
level than the rest of the system, the node is upgraded to the system code level, which can take up
to 20 minutes. During this time, the node is shown as Adding.
|
| Candidate | The node is not defined in an I/O group; however, it can be added as one of the node pairs in an I/O group. |
| Deleting | The node canister is in the process of being deleted from the system. |
| Flushing | The system is removing data from the cache for the node. |
| Online | The node canister is operational and is assigned to a cluster. |
| Online spare | The node has been defined to be a hot-spare node and it is being used as a surrogate for another node in the I/O group. |
| Offline | The node canister is not operational. Run the fix procedures to determine the problem. |
| Pending | The status of the node canister is in transition. In a few seconds, the status of the node canister will change. |
| Service | The node canister has been placed in this state to allow it to be serviced or it has a fatal node error, which means that it is not safe for this node to be part of the system. |
| Spare | The node has been defined to be a hot-spare node; however, it is not being used by the system. The node has a valid cluster ID and a valid node ID. |
| Starting | The node has been restarted. It is attempting to join the system cluster however, it cannot yet perform I/O. |