Messages and backup reports
can indicate whether LAN-free operations are successful. You can also
use the QUERY SESSION and QUERY ACTLOG commands
to verify LAN-free operations.
Procedure
Determine whether data movement is LAN-free by using one
or both of the following methods: - Monitor the QUERY SESSION output against
the node that is running the LAN-free backup. Verify that the sessions
are established:
- Log in to the Tivoli® Storage
Manager server
and storage agent by using a Tivoli Storage
Manager administrative
command-line client.
- Verify that the backup is LAN-free and the sessions are established
by issuing the QUERY SESSION command. In the command
output, look for information about bytes sent and bytes received.
If LAN-free data movement is occurring:
- Querying a session on the storage agent shows bytes received for
the node that increases to the total amount of data that is backed
up.
- Querying a session on the Tivoli Storage
Manager server shows
a few bytes (metadata) received for the same node.
If the node's session shows these characteristics, the data
movement is LAN-free.Remember: During a failover where
the storage agent is sending data directly to the server by proxy
because it cannot store the data directly, the QUERY SESSION statistics
on the server show a much higher byte count.
- Issue either of the following QUERY ACTLOG commands
on the server to which the client is connected:
query actlog search=storage_agent_name msgno=8337
query actlog search=storage_agent_name
If
the query locates entries in the activity log that relate to the storage
agent, the client is using LAN-free data transfer.