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[Po-Hsu Lin <2029280@xxxxxxxxxxxxxxxxxx>]

** Also affects: ubuntu-kernel-tests
   Importance: Undecided
       Status: New

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https://bugs.launchpad.net/bugs/2029280

Title:
  shiftfs is not available without installing linux-modules-extras
  package

Status in ubuntu-kernel-tests:
  New
Status in linux-aws package in Ubuntu:
  New
Status in linux-azure package in Ubuntu:
  New
Status in linux-gcp package in Ubuntu:
  New

Bug description:
  The shiftfs module, used by lxd, is not available out-of-the-box on
  cloud images (I've tested on aws, azure and gcp so far). The shiftfs
  module is installed with the `linux-modules-extra-$(uname -r)`
  package. This package is not seeded into the cloud images by default.
  Two potential solutions to this are:

   * Move the shiftfs module to the `linux-modules-$(uname -r)` package.
   * Seed the `linux-modules-extra-$(uname -r)` package into the cloud image.

  This all works for the generic kernel. When investigating why, I see
  that shiftfs.ko is included in linux-modules-5.15.0-78-generic (not
  the `linux-modules-extra` package). So it appears the location of
  shiftfs.ko is inconsistent.

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