[Bug 1007752] Re: Most recent grub update uses root=/dev/sdX for boot image, may fail to boot

[Daniel Smedegaard Buus]

Ah, that's why you asked. I thought it was a typo, as there's only @ and
@home, and snapshots thereof:

drwxr-xr-x 1 root root 302 Jun  2 12:36 @/
drwxr-xr-x 1 root root 204 Apr 23 13:35 @-2012-04-23.1438/
drwxr-xr-x 1 root root 218 Apr 23 14:44 @-2012-04-23.1553-manual/
drwxr-xr-x 1 root root 252 Apr 23 16:12 @-2012-04-23.1719-zfs/
drwxr-xr-x 1 root root 252 Apr 23 16:12 @-2012-04-23.1742-nvidia-and-messages-logging/
drwxr-xr-x 1 root root 252 Apr 23 23:03 @-2012-04-24.0010-misc/
drwxr-xr-x 1 root root 252 Apr 23 23:03 @-2012-04-24.1904-misc/
drwxr-xr-x 1 root root 302 May  6 10:30 @-2012-05-20.1731/
drwxr-xr-x 1 root root 302 May  6 10:30 @-2012-05-28.0926/
drwxr-xr-x 1 root root  46 Apr 25 12:13 @home/
drwxr-xr-x 1 root root  32 Apr 23 13:00 @home-2012-04-23.1442-initial-not-yet-logged-in/
drwxr-xr-x 1 root root  46 Apr 24 10:47 @home-2012-04-24.1904-misc/

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https://bugs.launchpad.net/bugs/1007752

Title:
  Most recent grub update uses root=/dev/sdX for boot image, may fail to
  boot

Status in “grub2” package in Ubuntu:
  Incomplete

Bug description:
  Hello :)

  The recent update (today) of grub,
     grub-pc:amd64 (1.99-21ubuntu3, 1.99-21ubuntu3.1)
     grub-pc-bin:amd64 (1.99-21ubuntu3, 1.99-21ubuntu3.1)
     grub-common:amd64 (1.99-21ubuntu3, 1.99-21ubuntu3.1)
  killed my grub, apart from also looking strange (used to be gray background, and a nice logo splash when booting, now black background and just low-res text when booting).

  The BOOT_IMAGE command defined root as - in my case - /dev/sdq2, while
  at boot it would be /dev/sdb2. Also, this might not stay the same
  regardless, and as I understand it, this should point to either a
  partition UUID or perhaps /dev/disk/by-id/something-or-other?

  In any event, as it stands, all boot options ends with busybox and an
  initramfs prompt. Editing the grub command and fixing the root= to the
  right path before booting will send me normally into Kubuntu where I
  can (hopefully) fix the problem manually.

  Cheerio :)

  Daniel

  ProblemType: Bug
  DistroRelease: Ubuntu 12.04
  Package: xorg 1:7.6+12ubuntu1
  ProcVersionSignature: Ubuntu 3.0.0-17.30-generic 3.0.22
  Uname: Linux 3.0.0-17-generic x86_64
  NonfreeKernelModules: nvidia zfs zcommon znvpair zavl zunicode
  ApportVersion: 2.0.1-0ubuntu8
  Architecture: amd64
  Date: Sat Jun  2 10:44:50 2012
  InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120421.1)
  ProcEnviron:
   LANGUAGE=en_US:en
   TERM=xterm
   PATH=(custom, user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: xorg
  Symptom: display
  UpgradeStatus: No upgrade log present (probably fresh install)

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