The information in the ndmpdlog is a trace of the NDMP protocol messages as defined in the various versions of the NDMP Protocol Specification. Data ONTAP supports versions 2, 3 and 4 of the protocol. At least a cursory knowledge of the NDMP Protocol is required to analyze the ndmpdlog. Describing the protocol is beyond the scope of this manpage. Descriptions of the three supported versions of the protocol can be found at www.ndmp.org.
If logging to files is enabled, a new log file is created each day. The last part of the log file name is the date for which the log file applies. If NDMP sessions are active at the time a new daily log file is created, information for the existing sessions will continue to be logged to the file which was active at the time the sessions were created. Information for any new sessions will be logged in the new log file. Up to 9 daily log files are retained on the system. A log file for a particular day may not exist if no NDMP activity occurred on that day. Log files over 8 days old are automatically deleted by Data ONTAP.
The log has a multi-column, multi-line format.
The three columns contain:
The log entry for each request/reply message begins with the following 2 lines:
NDMP message type:
The high-level message type such as
The log entry for each log/notify message begins with the following line:
Message <message type> sent
The high-level message type such as
Message header:
The message header contains information
such as sequence numbers, a
numerical representation of the message
type, and an error field representing
the success or failure of
receiving and decoding the message.
The fields correspond to the fields
in the NDMP message header as
defined in the NDMP Protocol Specifications.
The header information is followed by the request/reply information or the log/notify information.
Request/Reply information including the Error code: Contains the remainder of the information about the request and reply for the message and possibly some other state information associated with the request/reply. An Error code: field is displayed for all reply message log entries. This is the overall status of the execution of the request and is a key piece of information when diagnosing problems. The contents of the rest of the log entry varies widely depending on the message being logged. It is beyond the scope of this manpage to describe the details for the dozens of different messages which are part of the NDMP protocol. Refer to the NDMP Protocol Specifications as well as the NDMP Extension Specifications available from NetApp to decode these fields in the logs.
Log/Notify information:
Contains the remainder of the information
about the log/notify message.
As for the request/reply information,
see the NDMP Protocol Specifications
as well as the NDMP Extension
Specifications to decode these
fields in the logs.
Copyright © 1994-2008 NetApp, Inc. Legal Information