NVME-WDC-CU-SMART(1)

📦
version 3.2 · 7 versions
, in arch rolling

💖 nvme-wdc-cu-smart-log 💖

okay bestie, so this is a page from the nvme manual — like, the NVMe Manual, the whole nvme-user suite vibe — and today's main character is nvme-wdc-cu-smart-log, aka the tool that hits up your WDC drive for its very own vendor-unique log page and then formats it all pretty for you. ✨

🌸 NAME 🌸

nvme-wdc-cu-smart-log — sends the NVMe WDC cu-smart-log Vendor Unique Command, and returns the result. that's it, that's the whole job, and she does it gorgeously 💅

🎀 SYNOPSIS 🎀

nvme [<global-options>] wdc cu-smart-log <device>
                        [--uuid-index=<uuid-index> | -u <uuid-index>]

🦋 DESCRIPTION 🦋

so for the NVMe device you hand her, she retrieves and formats the Vendor Unique WDC 0xCA log page. iconic behavior, honestly.

the <device> parameter is mandatory — no device, no vibes. and it can be either the NVMe character device (ex: /dev/nvme0) or the block device (ex: /dev/nvme0n1). either one works, she's not picky 🫶

⚠️ quick reality check, bestie: this will only work on WDC devices that actually support this feature. results for any other device are undefined — like, genuinely undefined, not the cute kind of undefined. don't come crying to me 😭

on success it returns 0, and an error code otherwise. periodt.

✨ OPTIONS ✨

  • -u <uuid-index>, --uuid-index=<uuid-index> — sets the uuid-index of the log page to be retrieved. defaults to 0 if you don't say anything, which is very chill of her 💜

🌈 GLOBAL OPTIONS 🌈

these ones live at the top-level nvme command, but they're available to this subcommand too, so she's got the full group chat behind her:

  • --dry-run — prints the command that would be executed, but doesn't actually execute it. all the fantasy, zero commitment 🙈
  • --no-ioctl-probing — disables probing for 64-bit IOCTL support.
  • --no-retries — disables retry logic on transient errors.
  • -o <fmt>, --output-format=<fmt> — sets the reporting format to normal, tabular, 'json, or binary. only one output format at a time, bestie, we don't do chaos 🌸 — ngl that stray apostrophe in there is literally in the original, i'm just the messenger.
  • --output-format-version=<version> — selects the output format version. version 1 uses the original field naming, while version 2 (default) provides more consistent and script-friendly field names. other versions are rejected, no exceptions, the door is closed 💀
  • --quiet — suppresses informational messages. errors are still reported, and --quiet cancels any --verbose for the library log level. she goes whisper mode but she will still tell you when things are broken 🤫
  • --set-options=<key=value>[,<key=value>...] — sets libnvme library options for this invocation. supported keys are force-4k, mi-probe-enabled, test-base-dir and test-sysfs-dir.
  • --timeout=<ms> — sets the timeout for the command in milliseconds. infinite or -1 waits without a time limit (0xffffffff). she has all the time in the world, apparently ⭐
  • -v, --verbose — increases the level of detail in the output. may be specified multiple times to further increase verbosity. stack it, queen 👑
💡 these options can also be set as machine-wide defaults in nvme-cli.conf(5). a command-line flag always overrides the file — flag stays winning, no cap.

🍓 EXAMPLES 🍓

  • has the program issue WDC cu-smart-log plugin Command:
# nvme wdc cu-smart-log /dev/nvme0

look at her go. flawless. 🔥

👑 NVME 👑

part of the nvme-user suite. one big happy family 💖

okay and finally, the cute sign-off you asked for: this adorable little page comes from the NVMe manual, dated 10/30/2026, and it documents NVME-WDC-CU-SMART(1) 🎀 go forth and read your WDC logs, bestie, you're gonna slay 🦋✨

📦 where this page comes from