NVME-RPMB-READ-CO(1)

NAME
nvme-rpmb-read-counter - Read the RPMB write counter

SYNOPSIS

nvme [<global-options>] rpmb read-counter <device>
                        [--target=<target-id> | -t <target-id>]

DESCRIPTION

Reads the current write counter of the specified RPMB target. The counter value read is printed to STDOUT.

The <device> parameter is mandatory and an NVMe character device (ex: /dev/nvme0) must be specified.

OPTIONS

-t <target>, --target=<target>
    RPMB target id. This should be one of the supported RPMB targets as reported by nvme rpmb info. If nothing is given, the default of 0 is used as the RPMB target.

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

    • Read current write counter of RPMB target 0

        # nvme rpmb read-counter /dev/nvme0 --target=0

NVME

Part of the nvme-user suite