NVME-FEAT-KEEP-AL(1)

💖 NVME-FEAT-KEEP-AL(1) 💖

okay bestie, welcome to the NVMe Manual page for nvme-feat-keep-alive-timer — yes, the whole manual name is folded in right here at the top, cute and official. 💅

🌸 NAME 🌸

nvme-feat-keep-alive-timer — get and set keep alive timer feature. that's the whole name, no cap. 🦋

🦋 SYNOPSIS 🦋

nvme [<global-options>] feat keep-alive-timer <device>
                        [--kato=<kato> | -k <kato>]
                        [--sel=<select> | -S <select>] [--save | -s]

💅 DESCRIPTION 💅

Get and set keep alive timer feature. literally the main character of this page. ✨

The <device> parameter is mandatory, bestie — no skipping it. It may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1). 🫶

If the setting option (--kato) is specified, the command will update the keep alive timer configuration. If this option is not specified, it will retrieve and display the current configuration. iykyk. 💖

The keep alive timeout (KATO) specifies the interval in milliseconds that the host shall send Keep Alive Commands to the controller. ⏱️

On success it returns 0, error code otherwise. exit-status vibe check complete. 😭

🎀 OPTIONS 🎀

• -k <kato>, --kato=<kato> — Keep Alive Timeout. Specifies the time interval in milliseconds between Keep Alive Commands that the host shall send to the controller. A value of 0 disables the keep alive functionality. zero = off, periodt. 💀
• -S <select>, --sel=<select> — Select (SEL): This field specifies which value of the attributes to return in the provided data:
  • 0 — current — Current
  • 1 — default — Default
  • 2 — saved — Saved
  • 3 — supported — Supported capabilities
• -s, --save — Save the attribute so that it persists through all power states and resets. iconic persistence behavior. 👑

🌈 GLOBAL OPTIONS 🌈

The following options are defined at the top-level nvme command and are available to this subcommand, bestie. no gatekeeping. 💜

• --dry-run — Print the command that would be executed, but do not actually execute it. all talk, no action. 🙈
• --no-ioctl-probing — Disable probing for 64-bit IOCTL support.
• --no-retries — Disable 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.
• --output-format-version=<version> — Select 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.
• --quiet — Suppress informational messages. Errors are still reported, and --quiet cancels any --verbose for the library log level.
• --set-options=<key=value>[,<key=value>...] — Set libnvme library options for this invocation. 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).
• -v, --verbose — Increase the level of detail in the output. May be specified multiple times to further increase verbosity.

These options can also be set as machine-wide defaults in nvme-cli.conf(5). A command-line flag always overrides the file. the file could never. 💅

🍓 EXAMPLES 🍓

• Has the program issue a feat keep-alive-timer to get the current configuration — yes bestie, just ask for the vibe:

# nvme feat keep-alive-timer /dev/nvme0

• Has the program issue a feat keep-alive-timer to set the keep alive timeout to 10 seconds — slay:

# nvme feat keep-alive-timer /dev/nvme0 --kato=10000 --save

👑 NVME 👑

Part of the nvme-user suite. periodt. 💖

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and that's the whole manual page, bestie! mwah 💋 — brought to you by NVMe, dated 10/30/2026, with the page id NVME-FEAT-KEEP-AL(1). now go get that keep alive timer looking iconic. 🌈✨