NVME-FEAT-HOST-BE(1)

💅 NVME-FEAT-HOST-BE(1) — nvme-feat-host-behavior-support 💅

okay bestie, welcome to the nvme-feat-host-behavior-support page, from the NVMe Manual ✨ this is the one that grabs and sets the host behavior support feature 🎀

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✨ NAME ✨

nvme-feat-host-behavior-support — get and set the host behavior support feature, no cap 🫶

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🌸 SYNOPSIS 🌸

nvme [<global-options>] feat host-behavior-support <device>
                        [--acre=<acre> | -a <acre>]
                        [--etdas=<etdas> | -e <etdas>]
                        [--lbafee=<lbafee> | -l <lbafee>]
                        [--hdisns=<hdisns>]
                        [--cdfe=<cdfe> | -c <cdfe>]
                        [--sel=<select> | -S <select>] [--save | -s]

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🦋 DESCRIPTION 🦋

Get and set the host behavior support feature. That's the whole vibe 💫

The <device> parameter is mandatory — like, you literally cannot skip it, bestie 😭. It can be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).

So here's the tea ☕: if you specify any of the setting options (--acre, --etdas, --lbafee, --hdisns, or --cdfe), the command will update the host behavior support feature fields accordingly. But if none of these options are specified, it will just retrieve and display the current configuration — a little read-only moment 👑.

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

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🎀 OPTIONS 🎀

• -a <acre>, --acre=<acre> — Advanced Command Retry Enable (0 or 1). iconic little toggle 💅
• -e <etdas>, --etdas=<etdas> — Extended Telemetry Data Area 4 Supported (0 or 1).
• -l <lbafee>, --lbafee=<lbafee> — LBA Format Extension Enable (0 or 1).
• --hdisns=<hdisns> — Host Dispersed Namespace Support (0 or 1). yes, this one has no short flag, she's independent like that 🙈
• -c <cdfe>, --cdfe=<cdfe> — Copy Descriptor Formats Enable bitmask.
• -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. she stays saved, fr fr 💖

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🌈 GLOBAL OPTIONS 🌈

The following options are defined at the top-level nvme command and are available to this subcommand — they're like the main character energy that trickles down to everybody ✨

• --dry-run — Print the command that would be executed, but do not actually execute it. manifesting without acting 🧚
• --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 — pick one, bestie, you can't have all four 😭
• --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. the way it shuts --verbose down entirely, obsessed 🫶
• --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). no clock, no problem ⏳
• -v, --verbose — Increase the level of detail in the output. May be specified multiple times to further increase verbosity. stack 'em like bracelets 💫

These options can also be set as machine-wide defaults in nvme-cli.conf(5). A command-line flag always overrides the file — CLI stays on top, as she should 👑

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🔥 EXAMPLES 🔥

1. Has the program issue a feat host-behavior-support to get the current configuration:

# nvme feat host-behavior-support /dev/nvme0

2. Has the program issue a feat host-behavior-support to set fields with saving enabled:

# nvme feat host-behavior-support /dev/nvme0 --acre=1 --lbafee=1 --save

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👑 NVME 👑

Part of the nvme-user suite. you're in the family now 🫶

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alright that's the whole page bestie, go forth and feature-set responsibly 💖✨🎀 this little number is from the NVMe Manual, dated 10/30/2026 — version info straight from the source, no edits, iykyk 🦋💅