nvme-wdc-cap-diag − Retrieve WDC device's diagnostic log and save to file.
nvme wdc cap−diag <device> [−−output−file=<FILE>, −o <FILE>] [−−transfer−size=<SIZE>, −s <SIZE>]
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.
−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
• 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
Part of the nvme−user suite.