Re: [Scst-devel] ERRORS: Expected data direction 2 for opcode ATA PASS-THROUGH(16)

[Bart V. A. <bva...@ac...>]

On 11/24/14 10:37, Irwin wrote:
> Hi what do these errors mean? Anything to worry about? Not sure
> triggered them yet.
>
> [38740.097634] [2685]: scst: scst_parse_cmd:814:***ERROR***: Expected
> data direction 2 for opcode ATA PASS-THROUGH(16) (handler vdisk_blockio,
> target iscsi) doesn't match decoded value 4
> [38740.097635] scst_parse_cmd:Failed CDB:
> [38740.097636]  (h)___0__1__2__3__4__5__6__7__8__9__A__B__C__D__E__F
> [38740.097638]    0: 85 08 0c 00 d0 00 01 00 00 00 4f 00 c2 00 b0 00
> ..........O.....

Which initiator OS sent this command to SCST ? This is a SMART READ DATA 
command embedded in an ATA PASS-THROUGH command. The SMART READ DATA 
command returns 512 bytes but in the ATA PASS-THROUGH header the 
T_LENGTH field is zero (no data). I think that field should have been 
set to two (transfer length specified in the SECTOR_COUNT field).

Bart.