[Bug 1666853] Re: grub-probe when fs is larger than 2tb

[Elias Abacioglu]

** Description changed:

  don't really know if this is a resize2fs problem or a grub problem.
  But we discovered it when trying to cloud-init bootstrap a node with larger than 2 TB disk.
  
  Create a virtual or a physical node with more than 2TB disk.
  install ubuntu cloud image on disk.
  boot and let cloud init run it's course, after that grub2 os-probe will fail with this error message:
  grub-probe: error: unknown filesystem.
  
  Have tested this in both trusty and xenial
+ 
+ Update, adding parted info
+ # parted -l
+ Model: Virtio Block Device (virtblk)
+ Disk /dev/vda: 2255GB
+ Sector size (logical/physical): 512B/512B
+ Partition Table: gpt
+ Disk Flags:
+ 
+ Number  Start   End     Size    File system     Name             Flags
+  1      1049kB  33.6MB  32.5MB                  grub             bios_grub
+  2      33.6MB  8590MB  8556MB  linux-swap(v1)  swap
+  3      8590MB  2255GB  2246GB  ext4            cloudimg-rootfs  boot, esp

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https://bugs.launchpad.net/bugs/1666853

Title:
  grub-probe when fs is larger than 2tb

Status in grub2 package in Ubuntu:
  New

Bug description:
  don't really know if this is a resize2fs problem or a grub problem.
  But we discovered it when trying to cloud-init bootstrap a node with larger than 2 TB disk.

  Create a virtual or a physical node with more than 2TB disk.
  install ubuntu cloud image on disk.
  boot and let cloud init run it's course, after that grub2 os-probe will fail with this error message:
  grub-probe: error: unknown filesystem.

  Have tested this in both trusty and xenial

  Update, adding parted info
  # parted -l
  Model: Virtio Block Device (virtblk)
  Disk /dev/vda: 2255GB
  Sector size (logical/physical): 512B/512B
  Partition Table: gpt
  Disk Flags:

  Number  Start   End     Size    File system     Name             Flags
   1      1049kB  33.6MB  32.5MB                  grub             bios_grub
   2      33.6MB  8590MB  8556MB  linux-swap(v1)  swap
   3      8590MB  2255GB  2246GB  ext4            cloudimg-rootfs  boot, esp

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