NVME-RPMB-READ-DA(1)

📦 version 3.2, in arch rolling

💖 nvme-rpmb-read-data — your lil' authenticated RPMB data grabber 🎀

okay so bestie, this one lives in the nvme manual, and it's the command that pulls authenticated data off an RPMB target. think of it as a very polite little heist ✨

🌸 NAME 🌸

nvme-rpmb-read-data — read authenticated data from an RPMB target 💅

🦋 SYNOPSIS 🦋

nvme [<global-options>] rpmb read-data <device>
            [--msgfile=<data-file> | -f <data-file>]
            [--address=<offset>]
            [--blocks=<512 byte sectors> | -b <sectors>]
            [--target=<target-id> | -t <target-id>]

💜 DESCRIPTION 💜

It does authenticated data reads from the RPMB target you picked, at the sector offset you gave it, and then it writes whatever came back into the file you handed over with --msgfile. that's the whole vibe 🫶

one thing, fr fr: if the size you asked for is not within the total size the target actually supports, the request just fails — it never even gets sent to the device. no cap. so do your size math, queen 😭

the <device> parameter is mandatory, and it has to be an NVMe character device (ex: /dev/nvme0). that's a hard requirement, not a suggestion 💀

✨ OPTIONS ✨

  • -t <target>, --target=<target> — the RPMB target id. this should be one of the supported RPMB targets, like the ones reported by nvme rpmb info. if you don't give it anything, the default of 0 is used as the RPMB target. main character default energy 👑
  • --address=<offset> — the address to read from on the specified RPMB target. it's in 512 byte sector offset, counting from 0.
  • -b <sectors>, --blocks=<sectors> — the size to read from the specified RPMB target, measured in 512 byte sectors.
  • -f <data-file>, --msgfile=<data-file> — the name of the file the read data gets written to. heads up though: if you give it an existing file, the data is appended to it — it does not overwrite, bestie, so know which file you're pointing at 🙈

🧚 GLOBAL OPTIONS 🧚

these bad boys are defined at the top-level nvme command, and they're available to this subcommand too. so you can absolutely sprinkle them on top 💅

  • --dry-run — print the command that would be executed, but don't actually execute it. it's giving dress rehearsal 🎀
  • --no-ioctl-probing — disable probing for 64-bit IOCTL support.
  • --no-retries — disable the retry logic on transient errors.
  • -o <fmt>, --output-format=<fmt> — set the reporting format to normal, tabular, json, or binary. only one output format may be used at a time. pick one, don't be greedy ✨
  • --output-format-version=<version> — select the output format version. version 1 uses the original field naming, while version 2 (the default) provides more consistent and script-friendly field names. other versions are rejected, periodt 🚫
  • --quiet — suppress informational messages. errors are still reported, and --quiet cancels any --verbose for the library log level. it's the "shh, i'm focusing" flag 🤫
  • --set-options=<key=value>[,<key=value>...] — set libnvme library options for this invocation. the supported keys are force-4k, mi-probe-enabled, test-base-dir and test-sysfs-dir.
  • --timeout=<ms> — set the timeout for the command in milliseconds. infinite or -1 waits without a time limit (0xffffffff). for the girlies who truly have all the time in the world 😌
  • -v, --verbose — increase the level of detail in the output. may be specified multiple times to further increase verbosity. stack 'em, honestly 🔥
also!! these options can be set as machine-wide defaults in nvme-cli.conf(5). and a command-line flag always overrides the file — every single time, no exceptions 💖

🌈 EXAMPLES 🌈

  • read 200 blocks of (512 bytes) from target 2, at offset 0x100 and save
  • the data onto output.bin
# nvme rpmb read-data /dev/nvme0 -t 2 -f output.bin -b 200 --address=0x100

(yeah the original splits that sentence across two bullets, and honestly? iconic of it. we keep it 🍓)

👑 NVME 👑

part of the nvme-user suite 💜

okay that's the whole page, bestie, you're officially informed 🎀 this lovely little number is from the NVMe manual, dated 10/30/2026, and it's part of the nvme-user suite — go read some authenticated data, slay, and hydrate 💖✨🦋

📦 where this page comes from