[Bug 1794318] BIOS shows RAID1, newer mdadm --detail-platform does not

[Paul Sladen]

https://irclogs.ubuntu.com/2018/09/27/%23ubuntu-devel.html#t11:31

The BIOS shows a RAID1 (mirror) pair, this is designated as:

  RAID Level: "Recovery (Cont.)" in the BIOS. (screenshot)

This stands for "Recovery Set" == RAID1/Mirror group.

Newer 'mdadm --detail-platform' only reports:

  $ sudo mdadm --examine /dev/sd[ab]
  Platform : Intel(R) Rapid Storage Technology
  Version : 12.9.0.2006
  RAID Levels : raid0

the expected output would instead be:

  "RAID Levels : raid0 raid1 raid10 raid5"

However, the version of 'mdadm' used to actually boot + configure the
system is the older version.  It is still necessary to get the output
of 'mdadm --detail-platform' from the working version in the
initramfs.

This is because the version use on bootup is the one in the initramfs
(working) and the one here us on the main root filesystem
(non-working).

There are various other complications on this machine:

  1. Gaming laptop with the BIOS detail not properly populated:
  MSI Gaming Notebook GS70 2QE-046NL 17.3", 4710HQ, 1.5TB, GTX970M

  2. Other (non-RAIDed, non-SSD) disks on the same controller

  3. Apparently a BIOS update at some point.

All of these need testing/eliminating.

Reporter has indicated they are not available for several hours.

        -Paul

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https://bugs.launchpad.net/bugs/1794318

Title:
  unable to boot after installing vagrant

Status in vagrant:
  New
Status in linux package in Ubuntu:
  Incomplete
Status in mdadm package in Ubuntu:
  Incomplete

Bug description:
  Reproduction steps:
  clean install of kubuntu & reboot
  full update & reboot
  apt-get install vagrant & reboot
  =>busybox

  My system won't boot after installing vagrant. When I switch back to
  the previous kernel version it works until another update-initramfs.

  Currently I'm using 2 ssd's for intel fake raid 1(mirror) for kubuntu
  18.04

  I've reinstalled my system multiple times. I can reproduce this issue
  every time.

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