Decoding CDB for SAS and SCSI, take 2

I already have a post about debugging SCSI on host level: https://medium.com/opsops/decoding-scsi-cdb-69beef66cd19

This is continuation. I wanted a very quick way to decode CDB (this time, from the PERC RAID controller logs).

And I found it. I have no idea why it was so hard to find at the first attempt.

There is a sg_decode_sense program in the sg3-utils package.

It can decode ‘sense’ from devices, but it also can decode CDB.

Now it’s super simple

Simple as this

$ sg_decode_sense --cdb b5 02 07 fe 80 00 00 00 00 01 00 00
Security protocol out

Bingo!