[Bug 1349538] Re: grub-install failure on 2T disk and msdos partition table

Thu Mar 5 00:11:59 UTC 2015

Mattieu,
  It would seem that the fix is here:
  http://bazaar.launchpad.net/~ubuntu-on-ec2/live-build/cloud-images/revision/1881

all in all, still odd that resize2fs was ok, but grub was what failed.

Just as bit of info, i found that by looking at the tool-version-
info.txt files

  http://cloud-images.ubuntu.com/releases/trusty/release-20141125/tool-version-info.txt
and
  http://cloud-images.ubuntu.com/releases/trusty/release-20150123/tool-version-info.txt

** Package changed: grub2 (Ubuntu) => ubuntu

** Tags added: cloud-images-build

** Changed in: ubuntu
     Assignee: (unassigned) => Ben Howard (utlemming)

** Changed in: ubuntu
       Status: Triaged => Fix Released

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https://bugs.launchpad.net/bugs/1349538

Title:
  grub-install failure on 2T disk and msdos partition table

Status in Ubuntu:
  Fix Released

Bug description:
  This was originally reported with subject 'Greater than 1TiB boot
  disks for the Cloud Image' [1].  When running grub-install to a large
  disk with MSDOS partition table that has a single partition, we are
  seeing errors.

    [1] https://lists.ubuntu.com/archives/ubuntu-
  cloud/2014-July/thread.html#969

  ## either of these exhibit the problem.
  ##  'current' for trusty=20140726 utopic=20140728
  $ img_url="http://cloud-images.ubuntu.com/trusty/current/trusty-server-cloudimg-amd64-disk1.img"
  $ img_url="http://cloud-images.ubuntu.com/utopic/current/utopic-server-cloudimg-amd64-disk1.img"

  ## Get the download image
  $ wget "$img_url" -O "disk1.img.dist"

  ## create a seed image for cloud-init.
  $ printf "#%s\n%s\n%s\n%s\n" "cloud-config" "password: passw0rd" \
      "chpasswd: { expire: False }" "ssh_pwauth: True"  > my-user-data
  $ cloud-localds my-seed.img my-user-data

  ## create a raw image from that and resize it to 2T
  $ qemu-img convert -O raw disk1.img.dist disk1.img
  $ qemu-img resize disk1.img 2T
  $ qemu-img info disk1.img
  image: disk1.img
  file format: raw
  virtual size: 2.0T (2199023255552 bytes)
  disk size: 799M

  ## boot it, in qemu
  $ qemu-system-x86_64 -enable-kvm \
      -drive if=virtio,file=disk1.img -drive if=virtio,file=my-seed.img  \
      -device virtio-net-pci,netdev=net00 \
      -serial file:serial.log \
      -netdev type=user,id=net00 -m 1024

  ##
  ## now, logged in as 'ubuntu' and 'passw0rd'
  ##
  % lsb_release -sc
  utopic

  % cat /etc/cloud/build.info
  build_name: server
  serial: 20140728

  % dpkg-query --show grub-pc
  grub-pc 2.02~beta2-10

  % sudo sfdisk -l -uS /dev/vda
  Disk /dev/vda: 4260880 cylinders, 16 heads, 63 sectors/track
  Warning: The partition table looks like it was made
    for C/H/S=*/4/32 (instead of 4260880/16/63).
  For this listing I'll assume that geometry.
  Units = sectors of 512 bytes, counting from 0

     Device Boot    Start       End   #sectors  Id  System
  /dev/vda1   *      2048 4294967295 4294965248  83  Linux
  /dev/vda2             0         -          0   0  Empty
  /dev/vda3             0         -          0   0  Empty
  /dev/vda4             0         -          0   0  Empty

  % df -h /
  Filesystem      Size  Used Avail Use% Mounted on
  /dev/vda1       2.0T  757M  1.9T   1% /

  % cat /proc/partitions
  major minor  #blocks  name

   253        0 2147483648 vda
   253        1 2147482624 vda1
   253       16        366 vdb
    11        0    1048575 sr0

  % grep "resized:" /var/log/cloud-init.log
  2014-07-28 18:50:11,906 - cc_growpart.py[INFO]: '/' resized: changed (/dev/vda, 1) from 2146435072 to 2199022206976

  % sudo update-grub
  Generating grub configuration file ...
  grub-probe: error: unknown filesystem.

  % sudo grub-install /dev/vda
  Installing for i386-pc platform.
  grub-install: error: unknown filesystem.

  % sudo grub-install -v /dev/vda > grub-install-verbose-vda.log 2>&1
  ## see attached.

  ProblemType: Bug
  DistroRelease: Ubuntu 14.10
  Package: grub-pc 2.02~beta2-10
  ProcVersionSignature: User Name 3.16.0-5.10-generic 3.16.0-rc6
  Uname: Linux 3.16.0-5-generic x86_64
  ApportVersion: 2.14.4-0ubuntu2
  Architecture: amd64
  Date: Mon Jul 28 18:10:47 2014
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: grub2
  UpgradeStatus: No upgrade log present (probably fresh install)

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