This topic describes SAN File System cluster states.
SAN File System cluster states can be active, inactive, or unknown.
State type | State name | State description |
---|---|---|
Inactive | Not running | The cluster cannot perform any functions because none of the servers in the cluster have completed the start up procedure to the point where the cluster is detected as running, (that is, in the “Not added” server state). |
Forming | The cluster has a cluster master and is in the process of forming. This state is always the initial one whenever a cluster is newly formed. | |
Active | Offline | One or more servers in the cluster are in the “Offline”
state. This state terminates all current client sessions and prevents new
client sessions from being started, but still allows all server I/O. The offline
state is used for restricting the cluster from client access. Characteristics:
|
Fully quiescent | One or more servers in the cluster are in the “Fully
Quiescent” state. Quiescence puts the cluster in a “quiet” client communications
mode to allow other operations to occur, such as configuring a cluster or
creating a FlashCopy image. Full quiescence cuts off all client communications
with the cluster. Characteristics:
|
|
Partly quiescent | One or more servers in the cluster are in the “Partly Quiescent” state. Quiescence puts the cluster in a “quiet” client communications mode to allow other operations to occur, such as configuring a cluster or creating a FlashCopy image. Partial quiescence allows existing metadata activity and client communication to continue, but prohibits new communication. | |
Online | All servers in the cluster are in the “Online” state, meaning that the cluster has fully initialized all of its subsystems, and is serving client requests. | |
Unknown | Unknown | The cluster state cannot be determined. |
Parent topic: States
Related concepts
Metadata server
Related tasks
Creating a FlashCopy image
Related reference
Managing the cluster
Metadata server states