Using IPCS to view records from an external writer

Before you can use IPCS to look at trace records captured by a CT external writer, the remaining trace buffers must be queued to the external writer and the writer must be stopped in order to place an end-of-file record at the end of the data set.

For the z/OS® NFS server, to stop NFS tracing issue the command:

TRACE CT,OFF,COMP=MVSNFS

For the z/OS NFS client, to stop NFS tracing and flush the remaining buffer to the external writer, issue the command:

TRACE CT,OFF,COMP=MVSNFSC

You can stop the writer when control is received back from the flush command. Issue the following command to stop the writer and make the data set available to IPCS:

TRACE CT,WTRSTOP=CTWTR

You can now use the IPCS CTRACE command CTRACE COMP(MVSNFSC) FULL to look at the trace records, where the default data set has been set to IBMUSER.CT1.

When writing NFS trace records from more than one NFS server or client into separate component trace data sets, allocate each data set on a separate volume for improved performance. Use the IPCS COPYTRC command to merge records from multiple component trace data sets into one data set. Each component trace data set may represent one NFS server or one NFS client in the NFS multi-server or z/OS sysplex implementations. See z/OS MVS IPCS Commands for additional information.