'ad0: READ/WRITE command timeout'

[Karl M. Joch]

Jonathon McKitrick wrote:

> I'm getting this error during heavy disk activity:
> 
> ad0: READ command timeout 
> tag=0 serv=0 - resetting
> ata0: resetting devices .. done
> 
> This happens with READ and WRITE from time to time.  Recently I saw:
> 
> Falling back to PIO mode
> and 
> Waiting for DRQ	(IIRC)
> 
> This sounds ominous.  Is my drive on its last leg?
> 
> 
> NOTE: Please CC me, as I am not currently subscribed.  Thanks.
> 
> jm

I always change the harddisks when having errors like this. Mostly its 
the drive or the cable. And finally since a few days one server made big 
problems with the above error. Changing the drive, cables aso wasnt 
helpful. Found out it was the power supply which was buggy after 2 or 3 
years :-(. New power supply and all errors are gone.

-- 
Best regards / Mit freundlichen Gruessen,

Karl M. Joch
k.joch at ctseuro.com
http://www.ctseuro.com