[OpenIndiana-discuss] iostat -E and Illegal Request count

[Bob Friesenhahn]

On Wed, 18 Jul 2012, Tehcook wrote:

> Bob Friesenhahn <bfriesen <at> simple.dallas.tx.us> writes:
>
>
>> Vendor: ATA      Product: WDC WD5003ABYX-0 Revision: 1S02 Serial No:
> WD-WMAYP3661514
>> Size: 500.11GB <500107862016 bytes>
>> Media Error: 0 Device Not Ready: 0 No Device: 0 Recoverable: 0
>> Illegal Request: 10705 Predictive Failure Analysis: 0
>
>
> Possibly the drive does not support SMART queries ?

The illegal request is not due to a SMART query although it is due to 
a query for drive status.  This is the illegal request response that 
scsi.d reports:

00011.633036046 ahci0:ILL 0x1a MODE_SENSE(6) address 01:00, lba 
0x000300, len 0x000024, control 0x00 timeout 60 CDBP ffffff256b4f5c10 
1 sched(0) cdb(6) 1a0003002400

The query seems to be made with each zfs transaction group.

The problem is occuring with two different vendors enterprise SATA 
drives, but far more with a Western Digital drive.  That one is now up 
to an illegal request count of 26201.

Bob
-- 
Bob Friesenhahn
bfriesen at simple.dallas.tx.us, http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/