[VERIFICATION TRUSTY]

#changelog
linux (3.13.0-136.185) trusty; urgency=low

  * linux: 3.13.0-136.185 -proposed tracker (LP: #1734733)

  * NVMe timeout is too short (LP: #1729119)
    - NVMe: Make I/O timeout a module parameter
    - nvme: update timeout module parameter type


# lsb_release -r
Release:        14.04

# uname -r
3.13.0-136-generic

# lsmod | grep -i nvme

# modprobe nvme io_timeout=123456

# lsmod | grep -i nvme
nvme                   59545  0 

# cat /sys/module/nvme/parameters/io_timeout
123456

- Eric

** Tags removed: verification-needed-trusty
** Tags added: verification-done-trusty

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Packages, which is subscribed to linux-aws in Ubuntu.
https://bugs.launchpad.net/bugs/1729119

Title:
  NVMe timeout is too short

Status in linux package in Ubuntu:
  Confirmed
Status in linux-aws package in Ubuntu:
  Fix Released
Status in linux source package in Trusty:
  Fix Committed
Status in linux-aws source package in Trusty:
  New
Status in linux source package in Xenial:
  Fix Committed
Status in linux-aws source package in Xenial:
  Fix Released
Status in linux source package in Zesty:
  Fix Committed
Status in linux-aws source package in Zesty:
  Invalid
Status in linux source package in Artful:
  Fix Committed
Status in linux-aws source package in Artful:
  Invalid

Bug description:
  [SRU Justification]

  [Impact]
  Some NVMe operations time out too quickly. The module parameters allow the 
timeouts to be extended, but only up to 255s, as the counters are bytes.

  [Fix]
  The underlying parameters are unsigned ints, so make the module parameters 
unsigned ints too, by picking patch 
http://lists.infradead.org/pipermail/linux-nvme/2017-September/012701.html

  (Trusty specific) This also requires picking the patch that converts
  the constant into a parameter, which is a clean cherry-pick.

  [Regression Potential]
  (X/Z/A) Very limited: only types of module parameters are changing, the patch 
is easily reviewable.

  (Trusty specific) Limited: a module parameter is added and its type is
  changed. The patches are easily reviewable.

  [Testing]
  (Trusty only) Boot tested on a c5.large instance on AWS which uses
  NVMe to boot. Verified that the system still boots with the patches,
  and that a timeout of 123456s is permitted.

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