NVME-WDC-CAP-DIAG(1)              NVMe Manual             NVME-WDC-CAP-DIAG(1)

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

SYNOPSIS
       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
       o   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

       o   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

       o   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

       o   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

       o   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.

NVMe                              02/16/2024              NVME-WDC-CAP-DIAG(1)