[kwlug-disc] DRDY errors on drive that passes smartcontrol

[Paul Nijjar]

On Mon, Dec 28, 2015 at 07:54:37PM -0500, Andrew Kohlsmith (mailing lists account) wrote:
> 
> > but when I network boot the machine into a Live CD and run
> > gsmartcontrol, both the short and extended tests pass. I can also fsck
> > the file systems successfully. 
> 

> It has been only very rarely that I’ve had any warning from SMART that a drive was about to die. I’ve run drives that throw SMART "FAILING NOW” errors for years without a problem, and every drive that *has* died has had a clean bill of health according to SMART. Go figure.
> 

> The only thing I use it for is IDing the drives with the case on, and I run smartd more out of sheer blind determination to have the damn thing warn me correctly JUST ONCE before I die.
> 

I agree that I should not trust SMART wholeheartedly. But if the drive
is bad then I expect that the SMART extended test (which looks at
every sector of the drive) should fail at some point. And yet it
doesn't. So weird.

- Paul