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[Ming Lei <1469218@xxxxxxxxxxxxxxxxxx>]

The night before yesterday, I have run stress-ng for one night, looks it isn't crashed on
mcdivitt.

Yesterday, I found my system is upgraded from trysty to vivid directly and the 'systemd'
package isn't installed, then 'systemd-timesyn' can't be found, so I install the package
and make sure systemd-timesyncd is installed because the process was reported two times
in Colin's reports.

Then last night, I enable the the server by 'sudo timedatectl set-ntp true' before running
the test, but still not crash, see the logs attached.

** Attachment added: "mcdivitt-log-not-duplicatd.log"
   https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1469218/+attachment/4423691/+files/mcdivitt-log-not-duplicatd.log

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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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