#69 Missing information for NVME SSD disk

[Piotr Piotr]

Hi,

When running hdparm for NVME SSD disk I'm receiving very limited information. In particular there is no any info about security parameters. Please have a look below (and compare it to typical drive information). Any chance to improve this (not sure if it's bug or missing feature)? The disk is samsung 950 pro with Ubuntu 15.10.

hdparm -I /dev/nvme0n1

/dev/nvme0n1:
SG_IO: questionable sense data, results may be incorrect

ATA device, with non-removable media
Standards:
Likely used: 1
Configuration:
Logical max current
cylinders 0 0
heads 0 0
sectors/track 0 0
--
Logical/Physical Sector size: 512 bytes
device size with M = 10241024: 0 MBytes
device size with M = 10001000: 0 MBytes
cache/buffer size = unknown
Capabilities:
IORDY not likely
Cannot perform double-word IO
R/W multiple sector transfer: not supported
DMA: not supported
PIO: pio0

[Mark Lord]

Most likely the device driver (Linux kernel) is not processing the IDENTIFY DEVICE command, or perhaps the device itself does not implement it.

Not much to be done by hdparm itself in this case.

[Piotr Piotr]

Why then smartctl is able to get all the required data? Is that secure to use security commands on this nvme disk? Why ex. status frozen/not frozen is not displayed?