This topic describes SAN File System metadata server states.
SAN File System metadata servers present different states depending on whether they are available or unavailable, or whether or not they are part of a cluster.
State type | State name | State description |
---|---|---|
Unavailable | Not running | The server is not running and cannot perform any functions. |
Failed initialization | A fatal error occurred during initialization and the server is suspended. The server remains suspended until an administrator can fix the problem that occurred during initialization. | |
Available, unclustered | Initializing | The server is running, but has not yet opened its communication ports. |
Not added | The server has not yet been added to the cluster. Because the master server does not know about servers that have not yet been added, this state is only available by logging into that server. | |
Joining | The server is joining the cluster (has activated its communication). | |
Available, clustered | Offline | 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 | Quiescence puts the server in a “quiet” client communications
mode to allow other operations to occur, such as configuring a server or creating
a FlashCopy image.
Full quiescence cuts off all client communications with the server. Characteristics:
|
|
Partly quiescent | Quiescence puts the server in a “quiet” client communications mode to allow other operations to occur, such as configuring a server or creating a FlashCopy image. Partial quiescence allows existing metadata activity and client communication to continue, but prohibits new communication. | |
Online | The server has fully initialized all of its subsystems, is a member of a cluster, and is serving client requests. | |
Unknown | Unknown | The server state cannot be determined. |
Parent topic: States
Related concepts
Cluster
Related tasks
Creating a FlashCopy image
Related reference
Cluster states
Managing metadata servers