D7net
Home
Console
Upload
information
Create File
Create Folder
About
Tools
:
/
usr
/
share
/
doc
/
sg3-utils
/
examples
/
Filename :
nvme_identify_ctl.hex
back
Copy
# 64 byte NVMe Identify controller command (an Admin command) that is # suitable for: # sg_raw --cmdfile=<this_file_name> --request=4096 <nvme_device> # # The address field (at byte offset 24, 8 bytes and little endian) gives # special meaning to the highest address pointers: # ffffffff fffffffe use address of data-in buffer # ffffffff fffffffd use address of data-out buffer # # The data length field (at byte offset 36, 4 bytes and little endian) # gives special meaning to the highest block counts: # fffffffe use byte length of data-in buffer # fffffffd use byte length of data-out buffer # # Since The Identify command reads data "in" from the device, then the # data-in buffer is appropriate. 06 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 fe ff ff ff ff ff ff ff 00 00 00 00 fe ff ff ff 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 # A typical invocation in Linux and FreeBSD would look like this: # sg_raw --cmdfile=nvme_identify_ctl.hex -r 4k /dev/nvme0 # # NVMe likes "4k" (4096 bytes) buffer size, preferably aligned to # a 4096 byte (or "page") boundary.