When to restart the NDMPD service in Data ONTAP?
Applies to
- Clustered Data ONTAP 8.1
- Data ONTAP 8.1 7-Mode
Answer
In Data ONTAP 8.1 (and later), a new ndmpd start/stop/terminate
"advanced level" command set is introduced that allows the NDMPD service itself to be stopped and restarted. The same command is available in both 7-Mode and Cluster-Mode versions of Data ONTAP.
Note : Both 7-Mode
and clustered DOT
command sets are "advanced" level commands
7-Mode
The ndmpd start/stop
command controls the NDMP service daemon for a node. This is different from the ndmpd on/off
command, which enables or disables NDMP request-handling by the daemon, but does not control/modify the daemon itself. The ndmpd start/stop
command will also disable the NDMP services on all the vFiler units hosted on the node.
The ndmpd stop
command is a disruptive command and should not be used in normal scenarios. Processing of active sessions will continue, but the ability to view or expire sessions will be lost.
The ndmpd terminate
command terminates all the active NDMP sessions on the node and also expires the NDMPD daemon.
Warning: This command forcefully terminates all the NDMP sessions without an opportunity for a shutdown. |
After the ndmpd terminate
command is run, the NDMPD daemon will be automatically restarted. Like the stop
command, terminate
is also a disruptive command and should not be used in normal scenarios.
Example Syntax:
filer-rtp> priv set advanced
filer-rtp*> ndmpd stop
filer-rtp*> ndmpd start
filer-rtp*> ndmpd terminate
Cluster-Mode
The system services ndmp start/stop
command starts or stops the NDMP service daemon for a specific node. This is different from the system services ndmp on/off
command which enables or disables the daemon to accept NDMP requests.
The system services ndmp stop
command is a disruptive command and should not be used in normal scenarios. Processing of active sessions will continue, but the ability to view or expire sessions will be lost.
The system services ndmp terminate
command terminates all the active sessions on the node and also expires the NDMPD daemon.
Warning : This command forcefully terminates all NDMP sessions without an opportunity for a shutdown. |
After the system services ndmp terminate
command is run, the NDMPD daemon will be automatically restarted. Like the stop
command, terminate
is also a disruptive command and should not be used in normal scenarios.
Example Syntax:
cluster-rtp::> set -privilege advanced
cluster-rtp::*> system services ndmp stop -node [node_name]
cluster-rtp::*> system services ndmp start -node [node_name]
cluster-rtp::*> system services ndmp terminate -node [node_name]
Additional Information
additionalInformation_text