[Bug 1073731] [NEW] grube-probe on new sfdisk created partition on nbd0 returns nothing

[Robert Collins]

Public bug reported:

+ sudo chroot /tmp/demo.mnt grub-probe --device-map= --target=partmap
--device /dev/nbd0

+..

I've attached a reproduction script that demonstrates the issue - I ran
into this tracking down why a vm build was spectacularly unsuccessful at
booting. The host machine I'm using is amd64, FWIW.

** Affects: grub2 (Ubuntu)
     Importance: Undecided
         Status: New

** Attachment added: "Script to reproduce. Read before running."
   https://bugs.launchpad.net/bugs/1073731/+attachment/3420097/+files/demoprobefail

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https://bugs.launchpad.net/bugs/1073731

Title:
  grube-probe on new sfdisk created partition on nbd0 returns nothing

Status in “grub2” package in Ubuntu:
  New

Bug description:
  + sudo chroot /tmp/demo.mnt grub-probe --device-map= --target=partmap
  --device /dev/nbd0

  +..

  I've attached a reproduction script that demonstrates the issue - I
  ran into this tracking down why a vm build was spectacularly
  unsuccessful at booting. The host machine I'm using is amd64, FWIW.

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