---
name: "nvme-id-nvm-ns"
section: "1"
platform: "linux"
package: "nvme-cli"
version: "3.2-1"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/nvme-id-nvm-ns"
---

# nvme-id-nvm-ns(1)

Send NVMe Identify NVM Command Set specific Namespace data structure, display structure

## NAME

nvme-id-nvm-ns - Send NVMe Identify NVM Command Set specific Namespace data structure, display structure

## SYNOPSIS

```
nvme [<global-options>] id nvm-ns <device>
                        [--uuid-index=<uuid-index> | -U <uuid_index>]
                        [--namespace-id=<NUM> | -n <NUM>]
```

## DESCRIPTION

Identify NVM Command Set specific Namespace data structure for the specified NSID for the NVM Command Set specified in the CSI field.

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 structure may be returned in one of several ways depending on the option flags; the structure may be parsed by the program or the raw buffer may be printed to stdout.

## OPTIONS

- \-n \<NUM\>, --namespace-id=\<NUM\>

  Use the provided namespace id for the command. If not provided, the namespace id of the block device will be used. If the command is issued to a non-block device, the parameter is required. The broadcast value 0xffffffff can also be given as *all* or *-1*.

- \-U \<uuid-index\>, --uuid-index=\<uuid-index\>

  UUID Index of the feature

## GLOBAL 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)](/nvme-cli.conf/5.md). A command-line flag always overrides the file.

## EXAMPLES

• Has the program interpret the returned buffer and display the known fields in a human readable format:

```
# nvme id nvm-ns /dev/nvme0n1
```

• If using the character device or overriding namespace id:

```
# nvme id nvm-ns /dev/nvme0 -n 1
# nvme id nvm-ns /dev/nvme0n1 -n 1
# nvme id nvm-ns /dev/nvme0 --namespace-id=1
```

• Have the program return the raw structure in binary:

```
# nvme id nvm-ns /dev/nvme0n1 -o binary > id_ns.raw
# nvme id nvm-ns /dev/nvme0n1 --output-format=binary > id_ns.raw
```

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

• Alternatively you may want to send the data to another program that can parse the raw buffer.

```
NVME
```

Part of the nvme-user suite