nvme-wdc-vs-device-waf - Man Page

nvme wdc vs-device-waf <device> [--output-format=<normal|json> -o <normal|json>]
                        [--namespace-id=<nsid> | -n <nsid>]

For the NVMe device given, calculates the device TLC and SLC write amplification factor​.

The <device> parameter is mandatory and may be either the NVMe character device (ex: /dev/nvme0) or block device (ex: /dev/nvme0n1)​.

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

On success it returns 0, error code otherwise​.

-o <fmt>, --output-format=<fmt>

Set the reporting format to normal, or json​. Only one output format can be used at a time​. Default is normal​.

-n <nsid>, --namespace-id=<nsid>

Sets the command’s nsid value to the given nsid​. Defaults to 0xffffffff if not given​. This option may not affect anything depending on the log page, which may or may not be specific to a namespace​.

• Has the program issue WDC vs-device-waf plugin Command :

  # nvme wdc vs-device-waf /dev/nvme0

Part of the nvme-user suite​.