Ubuntu Manpage: ndctl-monitor - Monitor the smart events of nvdimm objects

NAME

       ndctl-monitor - Monitor the smart events of nvdimm objects

SYNOPSIS

       ndctl monitor [<options>]

DESCRIPTION

       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 configuration
       files with .conf suffix under /etc/ndctl.conf.d

       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.

EXAMPLES

       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

OPTIONS

-b, --bus=
A bus id number, or a provider string (e.g. "ACPI.NFIT"). Restrict the operation to the specified
bus(es). The keyword all can be specified to indicate the lack of any restriction, however this is
the same as not supplying a --bus option at all.

-d, --dimm=
A nmemX device name, or a dimm id number. Restrict the operation to the specified dimm(s). The
keyword all can be specified to indicate the lack of any restriction, however this is the same as not
supplying a --dimm option at all.

-r, --region=
A regionX device name, or a region id number. Restrict the operation to the specified region(s). The
keyword all can be specified to indicate the lack of any restriction, however this is the same as not
supplying a --region option at all.

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

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

• "<file>": Send log messages to specified <file>. When fopen() is not able to open <file>, log
messages will be forwarded to syslog.

• "syslog": Send messages to syslog.

• "standard": Send messages to standard output.

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(s) to use. This overrides the default config typically found in
/etc/ndctl.conf.d

--daemon
Run a monitor as a daemon.

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

• "dimm-spares-remaining": Spare Blocks Remaining value has gone below the pre-programmed
threshold.

• "dimm-media-temperature": NVDIMM Media temperature value has gone above the pre-programmed
threshold.

• "dimm-controller-temperature": NVDIMM Controller temperature value has gone above the
pre-programmed threshold.

• "dimm-health-state": NVDIMM Normal Health Status has changed

• "dimm-unclean-shutdown": NVDIMM Last Shutdown Status was a unclean shutdown.

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

-p, --poll=
Poll and report status/event every <n> seconds.

-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.

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