[Bug 1565226] Re: update-grub overenthusiastically places root=UUID=XXX (xenial)

[dfsmith]

Thanks---grub-pc does not exhibit this behaviour, so it should be good.
There may be other people  upgrading from trusty (LTS)->xenial (LTS) who hit this issue: is it worth deprecating grub1 on upgrading?

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Title:
  update-grub overenthusiastically places root=UUID=XXX (xenial)

Status in grub package in Ubuntu:
  Won't Fix

Bug description:
  The xenial initramfs will not mount the root partition using the
  UUID=XXX format when the root drive is mapped (e.g., through a LVM).

  update-grub builds its menu.lst file with kernel command line parameters for root= as, e.g.,
  kernel          /vmlinuz-4.4.0-16-generic root=UUID=2dddd69e-e70b-45c2-a262-abcdabcdabcdabcd ro quiet splash 

  Solution is to change UUID to /dev/mapper format, e.g.,
  kernel          /vmlinuz-4.4.0-16-generic root=/dev/mapper/mylvm-root ro quiet splash 
  by changing the kopt line in /boot/grub/menu.lst and re-running update-grub.

  Note: tested with /etc/fstsab using /dev/mapper/ mount points.

  (Upgraded from wily -> xenial.)

  Description:    Ubuntu Xenial Xerus (development branch)
  Release:        16.04
  Linux X200s 4.4.0-16-generic #32-Ubuntu SMP Thu Mar 24 22:38:01 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

  Package: initramfs-tools
  Version: 0.122ubuntu6

  Package: grub
  Version: 0.97-29ubuntu68

  ProblemType: Bug
  DistroRelease: Ubuntu 16.04
  Package: grub 0.97-29ubuntu68
  ProcVersionSignature: Ubuntu 4.4.0-16.32-generic 4.4.6
  Uname: Linux 4.4.0-16-generic x86_64
  ApportVersion: 2.20.1-0ubuntu1
  Architecture: amd64
  CurrentDesktop: KDE
  Date: Sat Apr  2 00:48:58 2016
  InstallationDate: Installed on 2014-08-16 (595 days ago)
  InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
  SourcePackage: grub
  UpgradeStatus: Upgraded to xenial on 2016-04-01 (1 days ago)

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