---
name: "ndctl-inject-smart"
section: "1"
platform: "linux"
package: "ndctl"
version: "85-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/ndctl-inject-smart"
---

# ndctl-inject-smart(1)

perform smart threshold/injection operations on a DIMM

## NAME

ndctl-inject-smart - perform smart threshold/injection operations on a DIMM

## SYNOPSIS

```
ndctl inject-smart <dimm> [<options>]
```

## DESCRIPTION

A generic DIMM device object, named /dev/nmemX, is registered for each memory device indicated in the ACPI NFIT table, or other platform NVDIMM resource discovery mechanism.

ndctl-inject-smart can be used to set smart thresholds, and inject smart attributes.

## EXAMPLES

Set smart controller temperature and spares threshold for DIMM-0 to 32C, spares threshold to 8, and enable the spares alarm.

```
ndctl inject-smart --ctrl-temperature-threshold=32 --spares-threshold=8 --spares-alarm nmem0
```

Inject a media temperature value of 52 and fatal health status flag for DIMM-0

```
ndctl inject-smart --media-temperature=52 --health=fatal nmem0
```

## 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.

\-m, --media-temperature=

Inject \<value\> for the media temperature smart attribute.

\-M, --media-temperature-threshold=

Set \<value\> for the smart media temperature threshold.

\--media-temperature-alarm=

Enable or disable the smart media temperature alarm. Options are *on* or *off*.

- \--media-temperature-uninject

  Uninject any media temperature previously injected.

\-c, --ctrl-temperature=

Inject \<value\> for the controller temperature smart attribute.

\-C, --ctrl-temperature-threshold=

Set \<value\> for the smart controller temperature threshold.

\--ctrl-temperature-alarm=

Enable or disable the smart controller temperature alarm. Options are *on* or *off*.

- \--ctrl-temperature-uninject

  Uninject any controller temperature previously injected.

\-s, --spares=

Inject \<value\> for the spares smart attribute.

\-S, --spares-threshold=

Set \<value\> for the smart spares threshold.

\--spares-alarm=

Enable or disable the smart spares alarm. Options are *on* or *off*.

- \--spares-uninject

  Uninject any spare percentage previously injected.

- \-f, --fatal

  Set the flag to spoof fatal health status.

- \--fatal-uninject

  Uninject the fatal health status flag.

- \-U, --unsafe-shutdown

  Set the flag to spoof an unsafe shutdown on the next power down.

- \--unsafe-shutdown-uninject

  Uninject the unsafe shutdown flag.

- \-N, --uninject-all

  Uninject all possible smart fields/values irrespective of whether they have been previously injected or not.

- \-v, --verbose

  Emit debug messages for the error injection process

- \-u, --human

  Format numbers representing storage sizes, or offsets as human readable strings with units instead of the default machine-friendly raw-integer data. Convert other numeric fields into hexadecimal strings.

## COPYRIGHT

Copyright © 2016 - 2022, Intel Corporation. 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.

## SEE ALSO

[ndctl-list(1)](/ndctl-list/1.md),