nvme-get-feature(1)

Usage

nvme [<global-options>] get-feature <device> [{--namespace-id=<nsid> | -n <nsid>}] [{--feature-id=<fid> | -f <fid>}] [{--uuid-index=<uuid-index> | -U <uuid_index>}] [{--data-len=<data-len> | -l <data-len>}] [{--sel=<select> | -s <select>}] [{--raw-binary | -b}] [{--cdw11=<cdw11> | -c <cdw11>}] [{--changed | -C}]

Overview

Submits an NVMe Get Feature admin command and returns the applicable results. This may be the feature’s value, or may also include a feature structure if the feature requires it (ex: LBA Range Type).

The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0), or a namespace block device (ex: /dev/nvme0n1).

On success, the returned feature’s structure (if applicable) may be returned in one of several ways depending on the option flags; the structure may parsed by the program and printed in a readable format if it is a known structure, displayed in hex, or the raw buffer may be printed to stdout for another program to parse.

Options

-n <nsid>, --namespace-id=<nsid>: Retrieve the feature for the given nsid. This is optional and most features do not use this value. The broadcast value 0xffffffff can also be given as all or -1.

-f <fid>, --feature-id=<fid>: The feature id to send with the command. Value provided should be in hex.

Value Definition

0x01 | arbitration Arbitration

0x02 | power-mgmt Power Management

0x03 | lba-range LBA Range Type

0x04 | temp-thresh Temperature Threshold

0x05 | err-recovery Error Recovery

0x06 | volatile-wc Volatile Write Cache

0x07 | num-queues Number of Queues

0x08 | irq-coalesce Interrupt Coalescing

0x09 | irq-config Interrupt Vector Configuration

0x0a | write-atomic Write Atomicity Normal

0x0b | async-event Asynchronous Event Configuration

0x0c | auto-pst Autonomous Power State Transition

0x0d | host-mem-buf Host Memory Buffer

0x0e | timestamp Timestamp

0x0f | kato Keep Alive Timer

0x10 | hctm Host Controlled Thermal Management

0x11 | nopsc Non-Operational Power State Config

0x12 | rrl Read Recovery Level Config

0x13 | plm-config Predictable Latency Mode Config

0x14 | plm-window Predictable Latency Mode Window

0x15 | lba-sts-interval LBA Status Information Report Interval

0x16 | host-behavior Host Behavior Support

0x17 | sanitize Sanitize Config

0x18 | endurance-evt-cfg Endurance Group Event Configuration

0x19 | iocs-profile I/O Command Set Profile

0x1a | spinup-control Spinup Control

0x1b | power-loss-signal Power Loss Signaling Config

0x1c | perf-characteristics Performance Characteristics

0x1d | fdp Flexible Data Placement

0x1e | fdp-events FDP Events

0x1f | ns-admin-label Namespace Admin Label

0x20 | key-value Key Value Configuration

0x21 | ctrl-data-queue Controller Data Queue

0x78 | emb-mgmt-ctrl-addr Embedded Management Controller Address

0x79 | host-mgmt-agent-addr Host Management Agent Address

0x7d | enh-ctrl-metadata Enhanced Controller Metadata

0x7e | ctrl-metadata Controller Metadata

0x7f | ns-metadata Namespace Metadata

0x80 | sw-progress Software Progress Marker

0x81 | host-id Host Identifier

0x82 | resv-mask Reservation Notification Mask

0x83 | resv-persist Reservation Persistence

0x84 | write-protect Namespace Write Protection Config

0x85 | bp-write-protect Boot Partition Write Protection Config

-s <select>, --sel=<select>: Select (SEL): This field specifies which value of the attributes to return in the provided data:

Select Name Description

0 current Current

1 default Default

2 saved Saved

3 supported Supported capabilities

-U <uuid-index>, --uuid-index=<uuid-index>: UUID Index of the feature

-l <data-len>, --data-len=<data-len>: The data length for the buffer returned for this feature. Most known features do not use this value. The exception is LBA Range Type

-c <cdw11>, --cdw11=<cdw11>: The value for command dword 11, if applicable.

-b, --raw-binary: Print the raw feature buffer to stdout if the feature returns a structure.

-C, --changed: This option will show feature changed.

Options

The following options are defined at the top-level nvme command and are available to this subcommand:

--dry-run: Print the command that would be executed, but do not actually execute it.

--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.

Examples

• Retrieves the feature for Number of Queues, or feature id 7:

# nvme get-feature /dev/nvme0 -f 7

• The following retrieves the feature for the LBA Range Type, which implicitly requires a buffer and will be printed to the screen in human readable format:

# nvme get-feature /dev/nvme0 -f 3

• Retrieves the feature for the some vendor specific feature and specifically requesting a buffer be allocate for this feature, which will be displayed to the user in as a hex dump:

# nvme get-feature /dev/nvme0 -f 0xc0 -l 512

Get feature with UUID index

# nvme get-feature /dev/nvme0 -f 0xc0 -l 512 -U 0x1

• The following retrieves the feature for the LBA Range Type, which implicitly requires a buffer and will be saved to a file in its raw format:

# nvme get-feature /dev/nvme0 -f 3 --raw-binary > lba_range.raw

It is probably a bad idea to not redirect stdout when using this mode.

Nvme

Part of the nvme-user suite

Releases

6 releases since Debian 9 (Stretch); the text changed 5 times.

9
10
11
12
13
Arch

--changed since Debian 13 (Trixie); --dry-run since Arch Linux 2026-11-01; --no-ioctl-probing since Arch Linux 2026-11-01; --no-retries since Arch Linux 2026-11-01; --output-format since Debian 13 (Trixie); --output-format-version since Arch Linux 2026-11-01; --quiet since Arch Linux 2026-11-01; --set-options since Arch Linux 2026-11-01; --timeout since Debian 13 (Trixie); --uuid-index since Debian 12 (Bookworm); --verbose since Debian 13 (Trixie); -C since Debian 13 (Trixie); -U since Debian 12 (Bookworm); -c since Debian 13 (Trixie); -o since Debian 13 (Trixie); -v since Debian 13 (Trixie).

--human-readable until Debian 13 (Trixie); -H until Debian 13 (Trixie); -t until Debian 13 (Trixie).

Referred to by

nvme(1) the NVMe storage command line interface utility (nvme-cli)

Value	Definition
0x01 \| arbitration	Arbitration
0x02 \| power-mgmt	Power Management
0x03 \| lba-range	LBA Range Type
0x04 \| temp-thresh	Temperature Threshold
0x05 \| err-recovery	Error Recovery
0x06 \| volatile-wc	Volatile Write Cache
0x07 \| num-queues	Number of Queues
0x08 \| irq-coalesce	Interrupt Coalescing
0x09 \| irq-config	Interrupt Vector Configuration
0x0a \| write-atomic	Write Atomicity Normal
0x0b \| async-event	Asynchronous Event Configuration
0x0c \| auto-pst	Autonomous Power State Transition
0x0d \| host-mem-buf	Host Memory Buffer
0x0e \| timestamp	Timestamp
0x0f \| kato	Keep Alive Timer
0x10 \| hctm	Host Controlled Thermal Management
0x11 \| nopsc	Non-Operational Power State Config
0x12 \| rrl	Read Recovery Level Config
0x13 \| plm-config	Predictable Latency Mode Config
0x14 \| plm-window	Predictable Latency Mode Window
0x15 \| lba-sts-interval	LBA Status Information Report Interval
0x16 \| host-behavior	Host Behavior Support
0x17 \| sanitize	Sanitize Config
0x18 \| endurance-evt-cfg	Endurance Group Event Configuration
0x19 \| iocs-profile	I/O Command Set Profile
0x1a \| spinup-control	Spinup Control
0x1b \| power-loss-signal	Power Loss Signaling Config
0x1c \| perf-characteristics	Performance Characteristics
0x1d \| fdp	Flexible Data Placement
0x1e \| fdp-events	FDP Events
0x1f \| ns-admin-label	Namespace Admin Label
0x20 \| key-value	Key Value Configuration
0x21 \| ctrl-data-queue	Controller Data Queue
0x78 \| emb-mgmt-ctrl-addr	Embedded Management Controller Address
0x79 \| host-mgmt-agent-addr	Host Management Agent Address
0x7d \| enh-ctrl-metadata	Enhanced Controller Metadata
0x7e \| ctrl-metadata	Controller Metadata
0x7f \| ns-metadata	Namespace Metadata
0x80 \| sw-progress	Software Progress Marker
0x81 \| host-id	Host Identifier
0x82 \| resv-mask	Reservation Notification Mask
0x83 \| resv-persist	Reservation Persistence
0x84 \| write-protect	Namespace Write Protection Config
0x85 \| bp-write-protect	Boot Partition Write Protection Config

Select	Name	Description
0	current	Current
1	default	Default
2	saved	Saved
3	supported	Supported capabilities

Usage

Overview

Options

Options

Examples

Nvme

Releases

See also

Mentioned on this page

Referred to by