Re: SATA disk smart or not?

On Friday 31 March 2006 10:00, Hugo Vanwoerkom wrote:
Hi,

I get contradictory messages about smart enabled for my SATA
WD800JD-60LUA0. Running Sarge BTW.

When I do hdparm -I /dev/sda, I get:

=========================================
ATA device, with non-removable media
Model Number: ST380011A
Serial Number: 4JV6GCK4
Firmware Revision: 8.01
...
Commands/features:
Enabled Supported:
* READ BUFFER cmd
* WRITE BUFFER cmd
* Host Protected Area feature set
* Look-ahead
* Write cache
* Power Management feature set
Security Mode feature set
* SMART feature set
* FLUSH CACHE EXT command
* Mandatory FLUSH CACHE command
* Device Configuration Overlay feature set
* 48-bit Address feature set
SET MAX security extension
* DOWNLOAD MICROCODE cmd
* General Purpose Logging feature set
* SMART self-test
* SMART error logging
=============================================

But when I do smartctl -a /dev/sda, I get:

=============================================

Device: ATA WDC WD800JD-60LU Version: 07.0
Serial number: WD-WMAMD4147178
Device type: disk
Local Time is: Fri Mar 31 10:44:33 2006 CST
Device does not support SMART

==============================================

So what is it? Hdparm says yes and smartctl says no.

Any thoughts? That drive is brand new. I would be suprised if it did not
support smart, but what do I know.

H

According to a comment from "sensovision from WKey" on page
http://www.linuxjournal.com/article/6983,
"Unfortunately right now official libata library in kernel doesn't support
ATA-passthrough calls and the only way to check SMART status right now is
to use patches like this:
http://www.kernel.org/pub/linux/kernel/people/jgarzik/libata/
Here is the quote from developers of smartmontools:
"Smartmontools should work correctly with SATA drives under both Linux 2.4
and 2.6 kernels, if you use the standard IDE drivers in drivers/ide. If you
use the new libata drivers, it won't work correctly because libata doesn't
yet support the needed ATA-passthrough ioctl() calls. Jeff Garzik, the
libata developer, says that this support will be added to libata in the
future. When this happens, we'll add support to smartmontools for a new
SATA/libata device type '-d sata'. Typically, to force an SATA disk to run
using the standard (non-libata) drivers, you must use the BIOS to select
"legacy mode" for the controller. If the IDE driver doesn't support your
particular SATA controller, or the controller doesn't have a legacy
interface, then only libata can be used. Unless the hard disk controller on
the system motherboard is Intel, VIA or nVidia, standard IDE drivers may
not work
Note: an unofficial patch to libata that allows smartmontools to be used
with the standard '-d ata' device type was posted to the linux kernel
mailing list at the end of August 2004. The patch is included in the
libata-dev patchset that can be applied to a recent Linux kernel (>=
2.6.9). With a SATA disk driven by a libata driver, smartmontools can now
be used by specifying both the device type 'ata' and the SCSI device
corresponding to this disk, for example, smartctl -i -d ata /dev/sda. The
patch is still under development and it is probably best to make sure that
the disk is idle before trying smartmontools. "
http://smartmontools.sourceforge.net/#testinghelp
Hope this helps."

Note: comment copied verbatim.

The entire article is worth reading, but if you're attempting to use
smartctl, you probably know what you're doing.

Justin


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