ndctl-monitor - Man Page

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 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.

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=

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.

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

ndctl-list(1), ndctl-inject-smart(1)