Re: POWER MODE and sat,12 again

Alfred Ganz wrote:
> However, after I just upgraded CentOS from 6.6. to 6.7 (which did not
> change smartmontools, 5.43-1.el6 before and after the upgrade) I now
> get an error message indicating that the standby parameter was ignored
> (and the disk is always spun up):
>    smartd[12177]: Device: /dev/sdb [SAT], no ATA CHECK POWER STATUS support,
> 	ignoring -n Directive
>
> Note that tests with smartctl show that the proper device type for the
> disk still has to be sat,12 and except for the -n parameter everything
> seems to work as expected. Here is the output for smartctl with -r and
> -n however:
>    # smartctl -r ioctl,2 -n standby -d sat,12 /dev/sdb
>    smartctl 5.43 2012-06-30 r3573 [i686-linux-2.6.32-573.1.1.el6.i686] (local build)
>    Copyright (C) 2002-12 by Bruce Allen, http://smartmontools.sourceforge.net
>    
>    
>    REPORT-IOCTL: Device=/dev/sdb Command=CHECK POWER MODE
>     Input:   FR=...., SC=...., LL=...., LM=...., LH=...., DEV=...., CMD=0xe5
>     [ata pass-through(12): a1 06 2c 00 00 00 00 00 00 e5 00 00 ]
>      scsi_status=0x0, host_status=0x7, driver_status=0x8
>      info=0x1  duration=1 milliseconds  resid=0
>      >>> Sense buffer, len=22:
>     00     72 04 00 00 00 00 00 0e  09 0c 00 00 50 ff 00 00
>     10     00 00 00 00 00 50
>      status=2: [desc] sense_key=4 asc=0 ascq=0
>    sat_device::ata_pass_through: scsi error: medium or hardware error (serious)
>    Values from ATA Return Descriptor are:
>     00     09 0c 00 00 50 ff 00 00  00 00 00 00 00 50
>     [Duration: 0.001s]
>    REPORT-IOCTL: Device=/dev/sdb Command=CHECK POWER MODE returned -1 errno=5 [scsi error medium or hardware error (serious)]

The SAT layer in this (very old?) Linux kernel is apparently broken.
It returns sense key 4 (HARDWARE ERROR) which means that the SAT ATA 
PASS-THROUGH(12) command has failed.
The kernel should return 1 (RECOVERED ERROR) if the command succeeded 
and output registers are returned in SCSI sense data.

Here similar problem with SMART STATUS of an USB bridge:
http://www.smartmontools.org/ticket/548#comment:3

Does the SMART STATUS (smartctl -H) work with this kernel?

Did you check -d sat ?

Thanks,
Christian


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