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[Ming Lei <1469218@xxxxxxxxxxxxxxxxxx>]

BTW, about the sata read timeout issue, I have run fio to verify sata disk read/randread/write/randwrite, and looks
it works fine

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https://bugs.launchpad.net/bugs/1469218

Title:
  HP ProLiant m400 Server sda timeout causes file system hang

Status in linux package in Ubuntu:
  Triaged

Bug description:
  While running stress-ng on a ProLiant m400 Server I managed to cause
  the disk controller to timeout which causes a file system hang. I am
  wondering if the timeout was causes because I completely overloaded
  the system causing it to be slow on ata handling times.

  I ran:

  stress-ng --all 64 -t 600 -v

  and the machine slowly clogged up with stress processes, and finally
  hit the hang.  Had to reboot the system.

  Attached is a kernel log.

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