nvme-wdc-cap-diag(1)
====================

NAME
----
nvme-wdc-cap-diag - Retrieve WDC device's diagnostic log and save to file.

SYNOPSIS
--------
[verse]
'nvme wdc cap-diag' <device> [--output-file=<FILE>, -o <FILE>] [--transfer-size=<SIZE>, -s <SIZE>]

DESCRIPTION
-----------

For the NVMe device given, sends the WDC Vendor Unique Capture-Diagnostics
request and saves the result to a file.

The <device> 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
-------
-o <FILE>::
--output-file=<FILE>::
	Output file; defaults to device serial number followed by "cap_diag" suffix

-s <SIZE>::
--transfer-size=<SIZE>::
    Transfer size; defaults to 0x10000 (65536 decimal) bytes

EXAMPLES
--------
* Gets the capture diagnostics log from the device and saves to default file in current directory (e.g. STM00019F3F9cap_diag.bin):
+
------------
# nvme wdc cap-diag /dev/nvme0
------------
* Gets the capture diagnostics log from the device and saves to defined file in current directory (e.g. testSTM00019F3F9cap_diag.bin):
+
------------
# nvme wdc cap-diag /dev/nvme0 -o test
------------
* Gets the capture diagnostics log from the device and saves to defined file with pathname (e.g. /tmp/testSTM00019F3F9cap_diag.bin):
+
------------
# nvme wdc cap-diag /dev/nvme0 -o /tmp/test
------------
* Gets the capture diagnostics log from the device transferring the data in 64k chunks and saves to default file in current directory (e.g. STM00019F3F9internal_fw_log.bin):
+
------------
# nvme wdc cap-diag /dev/nvme0 -s 0x10000
------------
* Gets the capture diagnostics log from the device transferring the data in 16k chunks and saves to default file in current directory (e.g. STM00019F3F9internal_fw_log.bin):
+
------------
# nvme wdc cap-diag /dev/nvme0 -s 16384
------------

NVME
----
Part of the nvme-user suite.
