NVME-GET-FEATURE(1)               NVMe Manual              NVME-GET-FEATURE(1)

NAME
       nvme-get-feature - Gets an NVMe feature, returns applicable results

SYNOPSIS
       nvme 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>]
                               [--human-readable | -H] [--changed | -C]
                               [--output-format=<fmt> | -o <fmt>] [--verbose | -v]
                               [--timeout=<timeout> | -t <timeout>]

DESCRIPTION
       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.

       -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 |                    | Performance                |
           |perf-characteristics      | 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 Management Agent      |
           |host-mgmt-agent-addr      | 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 | Description            |
           +-------+------------------------+
           |0      | Current                |
           +-------+------------------------+
           |1      | Default                |
           +-------+------------------------+
           |2      | Saved                  |
           +-------+------------------------+
           |3      | Supported capabilities |
           +-------+------------------------+
           |4-7    | Reserved               |
           +-------+------------------------+

       -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.

       -H, --human-readable
           This option will parse and format many of the bit fields into
           human-readable formats.

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

       -o <fmt>, --output-format=<fmt>
           Set the reporting format to normal, json or binary. Only one output
           format can be used at a time.

       -v, --verbose
           Increase the information detail in the output.

       -t <timeout>, --timeout=<timeout>
           Override default timeout value. In milliseconds.

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

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

       o   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

       o   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

       o   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

NVMe                              02/16/2026               NVME-GET-FEATURE(1)