NVME-WDC-NAMESPACE(1) NVMe Manual NVME-WDC-NAMESPACE(1)

# [NAME](#NAME)

nvme-wdc-namespace-resize - Resizes the device's namespace.

# [SYNOPSIS](#SYNOPSIS)

```
nvme [<global-options>] wdc namespace-resize <device>


                        [--nsid=<NAMESPACE ID>, -n <NAMSPACE ID>]


                        [--op-option=<OP OPTION>, -O <OP OPTION>]
```

# [DESCRIPTION](#DESCRIPTION)

For the NVMe device given, sends the WDC Vendor Specific Command that modifies the namespace size reported the device.

The &lt;device&gt; parameter is mandatory NVMe character device (ex: /dev/nvme0).

This will only work on WDC devices supporting this feature. Results for any other device are undefined.

# [OPTIONS](#OPTIONS)

-n &lt;NAMESPACE ID&gt;, --namespace-id=&lt;NAMESPACE\_ID&gt;

Namespace ID; ID of the namespace to resize

-O &lt;OP OPTION&gt;, --op-option=&lt;OP OPTION&gt;

Overprovisioning Option; defaults to 0xF Valid Values: 0x1 - 7% of Original TNVMCAP reported value 0x2 - 28% of Original TNVMCAP reported value 0x3 - 50% of Original TNVMCAP reported value 0xF - 0% of Original TNVMCAP reported value (original config) All other values - reserved

# [GLOBAL OPTIONS](#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 &lt;fmt&gt;, --output-format=&lt;fmt&gt;

Set the reporting format to *normal*, *tabular, 'json*, or *binary*. Only one output format may be used at a time.

--output-format-version=&lt;version&gt;

Select the output format version. Version *1* uses the original field naming, while version *2* (default) provides more consistent and script-friendly field names.

--timeout=&lt;ms&gt;

Set the timeout for the command in milliseconds.

-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)](/man/os/nvme-cli/nvme-cli.conf.5). A command-line flag always overrides the file.

# [EXAMPLES](#EXAMPLES)

•Resizes namespace 1 to 50% of the original TNVMCAP reported value:

```
# nvme wdc namespace-resize /dev/nvme0 -n 1 -O 3
```

•Resizes namespace 2 to 7% of the original TNVMCAP reported value:

```
# nvme wdc namespace-resize /dev/nvme0 --namespace-id=2 --op-option=1
```

# [NVME](#NVME)

Part of the nvme-user suite.

09/18/2026 NVMe

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Document: nvme-wdc-namespace-resize(1) from nvme-cli 3.1-r0 (Chainguard OS)
Source: https://github.com/linux-nvme/nvme-cli