This bug is awaiting verification that the kernel in -proposed solves
the problem. Please test the kernel and update this bug with the
results. If the problem is solved, change the tag 'verification-needed-
xenial' to 'verification-done-xenial'. If the problem still exists,
change the tag 'verification-needed-xenial' to 'verification-failed-
xenial'.

If verification is not done by 5 working days from today, this fix will
be dropped from the source code, and this bug will be closed.

See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how
to enable and use -proposed. Thank you!


** Tags added: verification-needed-xenial

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https://bugs.launchpad.net/bugs/1648449

Title:
  NVMe drives in Amazon AWS instance fail to initialize

Status in linux package in Ubuntu:
  Incomplete
Status in linux source package in Xenial:
  Fix Committed
Status in linux source package in Yakkety:
  New
Status in linux source package in Zesty:
  Incomplete

Bug description:
  [Impact]

  On an Amazon AWS instance that has NVMe drives, the NVMe drives fail
  to initialize, and so aren't usable by the system.  If one of the NVMe
  drives contains the root filesystem, the instance won't boot.

  [Test Case]

  Boot an AWS instance with a NVMe drive.  It will fail to initialize
  the NVMe drive(s), and errors will appear in the system log (if the
  system boots at all).  With a patched kernel, all NVMe drives are
  initialized and enumerated and work properly.

  [Regression Potential]

  Patching the NVMe driver may cause problems on other systems using
  NVMe drives.

  [Other Info]

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