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@xxxxxxxxxxxxx
Home Page: http://www.roberthancock.com/
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