[Bug 1316989] Re: update-initramfs not finding UUID-less raid arrays in mdadm.conf

[Dimitri John Ledkov]

mdadm hook, is in fact shipped in the mdadm package not in the
initramfs-tools itself.

** Package changed: initramfs-tools (Ubuntu) => mdadm (Ubuntu)

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Title:
  update-initramfs not finding UUID-less raid arrays in mdadm.conf

Status in “mdadm” package in Ubuntu:
  New

Bug description:
  I found this in an unattended-upgrades notification email after a
  kernel upgrade:

  update-initramfs: Generating /boot/initrd.img-3.13.0-24-generic
  W: mdadm: the array /dev/md1 with UUID 69643aeb:2c2b10a0:1f51fb89:78ee93fe
  W: mdadm: is currently active, but it is not listed in mdadm.conf. if
  W: mdadm: it is needed for boot, then YOUR SYSTEM IS NOW UNBOOTABLE!
  W: mdadm: please inspect the output of /usr/share/mdadm/mkconf, compare
  W: mdadm: it to /etc/mdadm/mdadm.conf, and make the necessary changes.
  W: mdadm: the array /dev/md3 with UUID 5254924c:1190c837:1f51fb89:78ee93fe
  W: mdadm: is currently active, but it is not listed in mdadm.conf. if
  W: mdadm: it is needed for boot, then YOUR SYSTEM IS NOW UNBOOTABLE!
  W: mdadm: please inspect the output of /usr/share/mdadm/mkconf, compare
  W: mdadm: it to /etc/mdadm/mdadm.conf, and make the necessary changes.

  The messages are reproducable by running update-initramfs -u

  /etc/mdadm/mdadm.conf contains raid arrays defined without UUID, as
  configured by server provider on setup:

  # This file was auto-generated on Tue, 04 Mar 2014 11:35:34 +0100
  # by mkconf $Id$
  ARRAY /dev/md1 level=raid1 num-devices=2 devices=/dev/sda1,/dev/sdb1
  ARRAY /dev/md3 level=raid1 num-devices=2 devices=/dev/sda3,/dev/sdb3

  /usr/share/mdadm/mkconf returns raid arrays with UUID:

  # definitions of existing MD arrays
  ARRAY /dev/md1 UUID=69643aeb:2c2b10a0:1f51fb89:78ee93fe
  ARRAY /dev/md3 UUID=5254924c:1190c837:1f51fb89:78ee93fe

  Reboot worked fine with no changes to mdadm.conf

  ProblemType: Bug
  DistroRelease: Ubuntu 14.04
  Package: initramfs-tools 0.103ubuntu4
  ProcVersionSignature: Ubuntu 3.13.0-24.47-generic 3.13.9
  Uname: Linux 3.13.0-24-generic x86_64
  ApportVersion: 2.14.1-0ubuntu3
  Architecture: amd64
  Date: Wed May  7 08:58:01 2014
  PackageArchitecture: all
  SourcePackage: initramfs-tools
  UpgradeStatus: No upgrade log present (probably fresh install)

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