[Bug 1792883] [NEW] "grub-install: error: disk `md126, 1' not found." for Intel VROC arrays in mdadm

[Shih-Yuan Lee]

Public bug reported:

I can introduce the issue on Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha
amd64 (20180916) and Ubuntu 18.04.1 LTS "Bionic Beaver" - Release amd64
(20180916).

This issue is after LP: #1779685.

First of all, there is no mdadm in the Ubuntu desktop images so I need to install it manually.
After I installed mdadm, I can install the system on Intel VROC.
However there is an error about grub-install.

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

** Attachment added: "journalctl.log"
   https://bugs.launchpad.net/bugs/1792883/+attachment/5189746/+files/journalctl.log

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Title:
  "grub-install: error: disk `md126,1' not found." for Intel VROC arrays
  in mdadm

Status in ubiquity package in Ubuntu:
  New

Bug description:
  I can introduce the issue on Ubuntu 18.10 "Cosmic Cuttlefish" - Alpha
  amd64 (20180916) and Ubuntu 18.04.1 LTS "Bionic Beaver" - Release
  amd64 (20180916).

  This issue is after LP: #1779685.

  First of all, there is no mdadm in the Ubuntu desktop images so I need to install it manually.
  After I installed mdadm, I can install the system on Intel VROC.
  However there is an error about grub-install.

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