group.of.nepali.translators team mailing list archive

[Eric Desrochers <eric.desrochers@xxxxxxxxxxxxx>]

Patches has been submitted by Daniel to kernel-team ML for Trusty kernel
(v3.13) as follow :

[SRU][T][PATCH 0/2] LP#1729119: NVMe timeout parameter type change 
[SRU][T][PATCH 1/2] NVMe: Make I/O timeout a module parameter 
[SRU][T][PATCH 2/2] nvme: update timeout module parameter type

** Also affects: linux (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Also affects: linux-aws (Ubuntu Trusty)
   Importance: Undecided
       Status: New

** Changed in: linux (Ubuntu Trusty)
   Importance: Undecided => Medium

** Changed in: linux (Ubuntu Trusty)
       Status: New => In Progress

** Changed in: linux (Ubuntu Trusty)
     Assignee: (unassigned) => Daniel Axtens (daxtens)

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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:
  In Progress
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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