[Bug 1961079] Re: [Ubuntu 22.04] Allow ESP installation on md-disks in subiquity

[Kumar Harshith Gowda K S]

Hi dbungert,

We tried installing 22.04.3 by passing "subiquity-
channel=beta/lp-1961079" kernel parameter, beta/lp-1961079 is functional
and installer can be updated.

After installer is loaded, we could be able to see Software-Raid (md-
raid) disk, but along with that drives which were part of the md-raid
were also listed as individual drives which shouldn't happen.

However, if we select md-raid disk and proceed to OS installation,
before installation begins, installer reports error with
install_fail.crash. Crash logs are attached.

** Attachment added: "install_fail.crash"
   https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1961079/+attachment/5700918/+files/1694692262.720774651.install_fail.crash

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Title:
  [Ubuntu 22.04] Allow ESP installation on md-disks in subiquity

Status in grub2 package in Ubuntu:
  Incomplete
Status in subiquity package in Ubuntu:
  In Progress
Status in grub2 source package in Focal:
  New
Status in subiquity source package in Focal:
  Invalid
Status in grub2 source package in Jammy:
  Incomplete
Status in subiquity source package in Jammy:
  In Progress

Bug description:
  subiquity installer currently does not allow to select md-disk as Installation destination where /, /home and /boot/efi could be created and installed. 
  Request is to enable this feature so that we can install and boot from md-disk, which our BIOS creates.

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