How to "ndmpd debug" with ONTAP 8.1 7-mode

mark_schuren — Thu, 05 Jun 2025 06:24:50 GMT

Hi Community,

I know of the good old "ndmpd debug" command (to gather logs for debugging with backup software).

Under 8.0.x it was:

ndmpd debug 50

and started gathering logs to /etc/log.

Under 8.1 it says:

nearstore> ndmpd debug

This command has been disabled.

To enable debug log, use the following options:

ndmpd.debug.enable

ndmpd.debug.filter

When I do:

options ndmpd.debug.enable on

options ndmpd.debug.filter 50

It does not comlpain, but also does not generate any debug logs...

I cannot find any documentation about "ndmpd.debug.filter" option. Can someone please comment on how to use it?

Thanks,

Mark

How to "ndmpd debug" with ONTAP 8.1 7-mode

mark_schuren — Fri, 29 Jun 2012 12:08:07 GMT

Found it out (with a little help of NGS):

options ndmpd.debug

ndmpd.debug.enable on

ndmpd.debug.filter all

This creates "all" debug logs in the following location (different from ONTAP 8.0 and below): /etc/log/mlog/ndmpd.log

For those interested, these are the valid settings for the "ndmpd.debug.filter" Option (not yet officially documented):

This option controls the NDMPD modules for debug logging is to be enabled.

It can take five values : all, none, normal, backend and filter.

all : turns on debug logging for all the modules.

none : disables debug logging for all the modules. It is equivalent to ndmpd.debug.enable option being set to off.

normal : is a short cut option that enables debug logging for all the modules except verbose and io_loop.

backend : is a short cut option that enables debug logging for all the modules except verbose, io_loop, ndmps and ndmpd.

filter : is a combination of one or more modules for which debug logs needs to be enabled. Multiple module names can be combined using following operators:

- to remove the given module from the list of specified modules in the filter string. ^ to add the given module or modules to the list of modules specified in the filter string.

The possible module names and a brief description is given below:

+--------------+-------------------------------------+

| modules | description |

+--------------+-------------------------------------+

| verbose | verbose message |

| io | I/O process loop |

| io_loop | I/O process loop verbose messages |

| ndmps | NDMP service |

| ndmpp | NDMP Protocol |

| rpc | General RPC service |

| fdc_rpc | RPC to FC driver service |

| auth | Authentication |

| mover | NDMP MOVER (tape I/O) |

| data | NDMP DATA (backup/restore) |

| scsi | NDMP SCSI (robot/tape ops) |

| bkup_rpc | RPC to Backup service client |

| bkup_rpc_s | RPC to Backup service server |

| cleaner | Backup/Mover session cleaner |

| reconf | Debug configure/reconfigure |

| dblade | Dblade specific messages |

| timer | NDMP server timeout messages |

| vldb | VLDB service |

| vol | VOL OPS service |

| sv | SnapVault NDMP extension |

| common | NDMP common state |

| ext | NDMP extensions |

| sm | SnapMirror NDMP extension |

| ndmprpc | NDMP Mhost RPC server |

+--------------+-------------------------------------+

topic How to "ndmpd debug" with ONTAP 8.1 7-mode in ONTAP Discussions

How to "ndmpd debug" with ONTAP 8.1 7-mode

How to "ndmpd debug" with ONTAP 8.1 7-mode