sg_raw with Maintenance Out and PROTOCOL_OUT_SEVICE_ACTION (0x10) returns illegal request
Sushma-Subramanya opened this issue · comments
Running sg_raw version - 0.4.6 on CentOS 7.8.2003
sg_raw to send maintenance out command returns Illegal Request.
[root@BaseOS bin]# sg_raw -s 8 -vvvvvv /dev/sg7 a4 10 fa 00 00 00 00 00 00 08 00 00
found bsg_major=249
open /dev/sg7 with flags=0x802
cdb to send: a4 10 fa 00 00 00 00 00 00 08 00 00
Command name: Management protocol out
encl show
SCSI Status: Check Condition
Sense Information:
Fixed format, current; Sense key: Illegal Request
Additional sense: Invalid command operation code
Raw sense data (in hex):
70 00 05 00 00 00 00 0a 00 00 00 00 20 00 00 00
00 00
Other commands like - Inquiry, ReadBuffer sent through sg_raw go through without any issues.
If I execute that command, sg_raw hangs, waiting for those 8 bytes of data promised by '-s 8'. After I provide those an error message (just like the above) tells me that my target (a scsi_debug virtual device) doesn't support that command. Do you know for a fact that /dev/sg7 supports that command?
Yep. If the drive says 'illegal request' it means the command is not supported. Nothing we can do here.