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[Launchpad Bug Tracker <1501834@xxxxxxxxxxxxxxxxxx>]

This bug was fixed in the package initramfs-tools - 0.120ubuntu6

---------------
initramfs-tools (0.120ubuntu6) wily; urgency=medium

  * add squashfs to list of 'most' modules (LP: #1501834)

 -- Scott Moser <smoser@xxxxxxxxxx>  Thu, 01 Oct 2015 12:48:11 -0400

** Changed in: initramfs-tools (Ubuntu)
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1501834

Title:
  [FFe] add squashfs support by default

Status in initramfs-tools package in Ubuntu:
  Fix Released

Bug description:
  In testing use of squashfs images, I found that my initramfs could not mount the squashfs filesystem.
  Paired with overlayroot, squashfs is very nice for testing.

  We're investigating use of squashfs as a image type for cloud images.
  Heres example of the changes to the generated initramfs.
  Roughly 22k growth on what was ~32M.  The only module added is the
  squashfs module (no additional deps pulled in).

  $ cd /boot
  $ sudo cp initrd.img-4.2.0-12-generic initrd.img-4.2.0-12-generic.orig
  $ sudo dpkg -i initramfs-tools*_amd64.deb
  $ dpkg-query --show initramfs-tools
  0.120ubuntu6~sm0
  $ sudo update-initramfs -u -k 4.2.0-12-generic
  $ lsinitramfs initrd.img-4.2.0-12-generic.orig | sort > /tmp/list.orig
  $ lsinitramfs initrd.img-4.2.0-12-generic | sort > /tmp/list

  $ diff -u /tmp/list.orig /tmp/list
  --- /tmp/list.orig   2015-10-01 12:59:09.030401257 -0400
  +++ /tmp/list  2015-10-01 13:04:56.537463788 -0400
  @@ -163,7 +163,7 @@
   etc/udev
   etc/udev/udev.conf
   init
  -initrd.img-4.2.0-12-generic.orig
  +initrd.img-4.2.0-12-generic
   kernel
   kernel/x86
   kernel/x86/microcode
  @@ -1461,6 +1461,8 @@
   lib/modules/4.2.0-12-generic/kernel/fs/nfs/nfsv4.ko
   lib/modules/4.2.0-12-generic/kernel/fs/reiserfs
   lib/modules/4.2.0-12-generic/kernel/fs/reiserfs/reiserfs.ko
  +lib/modules/4.2.0-12-generic/kernel/fs/squashfs
  +lib/modules/4.2.0-12-generic/kernel/fs/squashfs/squashfs.ko
   lib/modules/4.2.0-12-generic/kernel/fs/udf
   lib/modules/4.2.0-12-generic/kernel/fs/udf/udf.ko
   lib/modules/4.2.0-12-generic/kernel/fs/xfs

  $ ls -l initrd.img-4.2.0-12-generic.orig initrd.img-4.2.0-12-generic
  -rw-r--r-- 1 root root 33555932 Oct  1 13:03 initrd.img-4.2.0-12-generic
  -rw-r--r-- 1 root root 33533473 Oct  1 12:55 initrd.img-4.2.0-12-generic.orig
  $ echo $((33555932-33533473))
  22459

  $ ls -l /lib/modules/4.2.0-12-generic/kernel/fs/squashfs/squashfs.ko
  -rw-r--r-- 1 root root 87569 Sep 28 17:27 /lib/modules/4.2.0-12-generic/kernel/fs/squashfs/squashfs.ko

  ProblemType: Bug
  DistroRelease: Ubuntu 15.10
  Package: initramfs-tools 0.120ubuntu5
  ProcVersionSignature: Ubuntu 4.2.0-10.12-generic 4.2.0
  Uname: Linux 4.2.0-10-generic x86_64
  ApportVersion: 2.19-0ubuntu1
  Architecture: amd64
  CurrentDesktop: Unity
  Date: Thu Oct  1 12:47:13 2015
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2015-07-23 (70 days ago)
  InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Alpha amd64 (20150722.1)
  PackageArchitecture: all
  SourcePackage: initramfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

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