NDCTL-INJECT-SMART(1)

💖 ndctl-inject-smart(1) — the ndctl manual's glow-up edition ✨

okay bestie, welcome to the ndctl-inject-smart page, straight out of the ndctl Manual 🫶

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🌸 NAME 🌸

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

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✨ SYNOPSIS ✨

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

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🦋 DESCRIPTION 🦋

So like, every memory device that shows up in the ACPI NFIT table — or honestly any other platform NVDIMM resource discovery mechanism that does the same job — gets its own generic DIMM device object registered, and that object is named /dev/nmemX. one per device. cute, right? 🎀

And ndctl-inject-smart is the tool you use to set smart thresholds and inject smart attributes. that's the whole vibe. it's giving "pretend the hardware said this" energy 👑

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🌈 EXAMPLES 🌈

Example numero uno — set the smart controller temperature and the spares threshold for DIMM-0 to 32C, set the spares threshold to 8, and enable the spares alarm:

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

Example numero dos — inject a media temperature value of 52 and the fatal health status flag for DIMM-0:

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

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💅 OPTIONS 💅

• -b, --bus= — a bus id number, or a provider string (like "ACPI.NFIT" bestie). it restricts the operation to the bus(es) you named. you can also pass the keyword all to say "no restriction whatsoever" — but lowkey that's the exact same thing as just not passing 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. the options are on or off. pick one, no in-between 🔔
• --media-temperature-uninject — uninject any media temperature you previously injected. undo button, but make it smart 💫
• -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 you 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 you previously injected 💫
• -f, --fatal — set the flag to spoof fatal health status 💀 (spoofing! it's pretend! the vibes are fake!)
• --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, and it does NOT care whether they were previously injected or not. scorched earth, but make it tidy 🔥
• -v, --verbose — emit debug messages for the error injection process, for when you simply must know everything 👀
• -u, --human — format numbers representing storage sizes, or offsets, as human readable strings with units instead of the default machine-friendly raw-integer data. and it also converts other numeric fields into hexadecimal strings 🧮

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👑 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. 🫶

no cap, the NO WARRANTY part is in all caps for a reason bestie — read it, respect it 💖

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🎀 SEE ALSO 🎀

• ndctl-list(1)

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and that's the whole page, slay ✨ this was ndctl, dated 2026-07-07, and you absolutely ate reading all of it 💅🦋🌸 periodt 💖