Documentation for ndctl and daxctl


ndctl-monitor - Monitor the smart events of nvdimm objects


ndctl monitor [<options>]


Ndctl monitor is used for monitoring the smart events of nvdimm objects and dumping the json format notifications to syslog, standard output or a logfile.

The objects to monitor and smart events to notify can be selected by setting options and/or the configuration file at /etc/ndctl/monitor.conf

Both, the values in configuration file and in options will work. If there is a conflict, the values in options will override the values in the configuration file. Any updated values in the configuration file will take effect only after the monitor process is restarted.


Run a monitor as a daemon to monitor DIMMs on bus “nfit_test.1”

ndctl monitor --bus=nfit_test.1 --daemon

Run a monitor as a one-shot command and output the notifications to /var/log/ndctl.log

ndctl monitor --log=/var/log/ndctl.log

Run a monitor daemon as a system service

systemctl start ndctl-monitor.service


-b; --bus=
Enforce that the operation only be carried on devices that are attached to the given bus. Where bus can be a provider name or a bus id number.

-d; --dimm=
A nmemX device name, or dimm id number. Select the devices to monitor reference the given dimm.

-r; --region=
A regionX device name, or a region id number. The keyword all can be specified to carry out the operation on every region in the system, optionally filtered by bus id (see –bus= option).

-n; --namespace=
A namespaceX.Y device name, or namespace region plus id tuple X.Y.

-l; --log=
Send log messages to the specified destination.

The default log destination is syslog if “–daemon” is specified, otherwise standard. Note that standard and relative path for `<file> will not work if “–daemon” is specified.

-c; --config-file=
Provide the config file to use. This overrides the default config typically found in /etc/ndctl

Run a monitor as a daemon.

-D; --dimm-event=
Name of an smart health event from the following:

The monitor will attempt to enable the alarm control bits for all specified events.

-u; --human
Output monitor notification as human friendly json format instead of the default machine friendly json format.

-v; --verbose
Emit extra debug messages to log.


Copyright (c) 2018, FUJITSU LIMITED. License GPLv2: GNU GPL version 2 This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.


ndctl-list , ndctl-inject-smart