Re: [2.6.21.1] SATA freeze

[Robert Hancock <hancockr@shaw.ca>]

Fred Moyer wrote:
> > This appears to be a different problem. Something is issuing 
> > SMART-related commands (smartd or smartctl perhaps) which the drive 
> > seems to be reacting strangely to. It apparently completed the command 
> > but never raised DRQ to request any data being transferred even though 
> > we expected it to. Maybe SMART is disabled on the drive and that's 
> > causing it to just toss these commands? CCing linux-ide in case anyone 
> > knows what would cause this.
>
> Here's smartctl -a for this drive - same output for both sda and sdb. 
> Smartd is currently running.  Any advice appreciated.
>
> Previously on 2.6.15 I was seeing sdb remount as readonly under heavy 
> i/o.  I have not seen that issue yet with 2.6.21 (with Robert's patch 
> from May 5th for sata_nv), but that occurrence of remounts read-only was 
> infrequently, so that issue may be solved.
>
> app2 ~ # smartctl -a /dev/sda
> smartctl version 5.36 [x86_64-pc-linux-gnu] Copyright (C) 2002-6 Bruce 
> Allen
> Home page is http://smartmontools.sourceforge.net/
>
> Device: ATA      ST3808110AS      Version: n/a
> Serial number:             5LR8895K
> Device type: disk
> Local Time is: Sat May 12 12:05:58 2007 PDT
> Device does not support SMART
>
> Error Counter logging not supported
>
> [GLTSD (Global Logging Target Save Disable) set. Enable Save with '-S on']
> Device does not support Self Test logging

Sounds like SMART is likely disabled on that drive. You can try doing 
"smartctl -s on /dev/sda" and see if that will turn it on.

--
Robert Hancock      Saskatoon, SK, Canada
To email, remove "nospam" from hancockr@nospamshaw.ca
Home Page: http://www.roberthancock.com/

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