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NVME-SHOW-TOPOLOGY(1) NVMe Manual NVME-SHOW-TOPOLOGY(1)

NAME

nvme-show-topology - Show topology of all NVMe subsystems

SYNOPSIS

nvme [<global-options>] show-topology

DESCRIPTION

Show the topology of all NVMe subsystems.

OPTIONS

-r <order>, --ranking=<order>

Set the ranking orer to namespace (default) or ctrl. This option has only an effect for output format normal. The JSON output is always namespace ordered.

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.

--timeout=<ms>

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). A command-line flag always overrides the file.

EXAMPLES

nvme show-topology

NVME

Part of the nvme-user suite

07/31/2026 NVMe