[Bug 1895329] Re: when booting cloned live drive 3rd partition is created without file system

[sudodus]

Something has happened, that I discovered today: Lubuntu works.

I tested the current Groovy iso files of Ubuntu Desktop, Lubuntu and
Xubuntu.

- with the USB drives in used state (with various data, typically
leftovers after previous tests with live or persistent live systems)

- both in UEFI mode and BIOS mode

- Computer: Dell Precision M4800

- USB drive: Kingston DT Workspace, 32 GB

The results were the same with Ubuntu and Xubuntu: no file system was
created in the third partition.

Results with Lubuntu:

- The current version was still dated Sept 20 (while the other two iso
files was dated today, Sept 21).

- I repeated the order of cloning four times to get a different
'history', and could repeat success: an ext4 file system with the label
'writable' was created in the third partition.

There is a significant difference between Lubuntu and the other flavours
of Ubuntu: Lubuntu uses the installer Calamares, and there is no boot
option 'maybe-ubiquity'. I am not saying that it makes the difference
concerning this bug. Probably there are other differences too.

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https://bugs.launchpad.net/bugs/1895329

Title:
  when booting cloned live drive 3rd partition is created without file
  system

Status in casper package in Ubuntu:
  Incomplete

Bug description:
  When iso testing the current daily Lubuntu iso file (dated 2020-09-11),
  I notice that a third partition is created (during the boot process),
  but no file system is recognized by lsblk -f, and it is not used for
  logging (as we are used to from Focal and previous versions of Groovy).

  In this case it is seen by lsblk as /dev/sda3. See details in the
  attached file.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.10
  Package: casper 1.452
  ProcVersionSignature: Ubuntu 5.8.0-18.19-generic 5.8.4
  Uname: Linux 5.8.0-18-generic x86_64
  ApportVersion: 2.20.11-0ubuntu45
  Architecture: amd64
  CasperMD5CheckResult: pass
  CasperVersion: 1.452
  CurrentDesktop: LXQt
  Date: Fri Sep 11 17:20:03 2020
  LiveMediaBuild: Lubuntu 20.10 "Groovy Gorilla" - Alpha amd64 (20200911)
  SourcePackage: casper
  UpgradeStatus: No upgrade log present (probably fresh install)
  mtime.conffile..etc.casper.conf: 2020-09-11T17:08:26.454154

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