Re: [BUG] ide dma_timer_expiry, then hard lockup

Bartlomiej Zolnierkiewicz wrote:

quoted

There are two distinct issues.
-- libata locks up in partition table read on an hpt366+old maxtor disk
  that has ben working fine for many years with old ide driver. (It
  still works fine when I boot to the alternate ide-based kernel).

quoted

-- ide driver locks up on hpt366+new maxtor disk under heavy 
  i/o load. I was able to copy 60GB from old to new disk without a
  problem; however, raid reconstruction locks it up, maybe after 5-15
  seconds.

quoted

  This probably is "hardware related"; its something that the new 
  hard drive does. Given that its being sold at a big discount, it
  may even be that the sellers know that this is a crappy disk. :-)

quoted

  All I want is some way of resetting the disk, and continuing on.

It would be useful to see hdparm --Istdout output for *both* disks.

quoted

I'm stalled in debugging; I'm not sue what I'm looking for.

Sergei, do you think that testing the drive with DMA disabled may
tell us something new?

    Not sure. I'll try to come up with a patch esetting the state machine in 
dma_timeout() method (following Alan's idea) -- HPT366 regs are different 
enough to use the one for HPT370.

Thanks,
Bart

MBR, Sergei