[Bug 2058128] [NEW] ubuntu-mini-iso is useless because of gigantic RAM requirements

[Norbert]

Public bug reported:

Steps to reproduce:
1. Download latest ubuntu-mini-iso from https://cdimage.ubuntu.com/ubuntu-mini-iso/daily-live/current/noble-mini-iso-amd64.iso
2. Create virtual 32 Gb hard disk using

   fallocate -l32g 32g.raw

3. Launch QEMU VM with allocated 4 Gb of RAM

   kvm -cdrom ~/Downloads/noble-mini-iso-amd64.iso -drive
file=32g.raw,format=raw -m 4096

4. Wait it to boot, select "Ubuntu Server 22.04.4 LTS (Jammy Jellyfish)"
system to install.

Expected results:
* ubuntu-mini-iso is usable as it was in 20.04 LTS from http://archive.ubuntu.com/ubuntu/dists/focal/main/installer-amd64/current/legacy-images/netboot/mini.iso

Actual results:
* ubuntu-mini-iso is not usable and really useless - shows the following text in the QEMU terminal:

```
available memory insufficient
requested 2008MiB
available 1024MiB
failed to determine size reservation for memmap, debug shell
```

Additional notes: it seems that Ubuntu has turned into wrong direction,
users of mini.iso should and will switch to Debian.

** Affects: ubuntu-cdimage
     Importance: Undecided
         Status: New

** Affects: mini-iso-tools (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: noble

** Also affects: ubuntu-cdimage
   Importance: Undecided
       Status: New

-- 
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https://bugs.launchpad.net/bugs/2058128

Title:
  ubuntu-mini-iso is useless because of gigantic RAM requirements

Status in Ubuntu CD Images:
  New
Status in mini-iso-tools package in Ubuntu:
  New

Bug description:
  Steps to reproduce:
  1. Download latest ubuntu-mini-iso from https://cdimage.ubuntu.com/ubuntu-mini-iso/daily-live/current/noble-mini-iso-amd64.iso
  2. Create virtual 32 Gb hard disk using

     fallocate -l32g 32g.raw

  3. Launch QEMU VM with allocated 4 Gb of RAM

     kvm -cdrom ~/Downloads/noble-mini-iso-amd64.iso -drive
  file=32g.raw,format=raw -m 4096

  4. Wait it to boot, select "Ubuntu Server 22.04.4 LTS (Jammy
  Jellyfish)" system to install.

  Expected results:
  * ubuntu-mini-iso is usable as it was in 20.04 LTS from http://archive.ubuntu.com/ubuntu/dists/focal/main/installer-amd64/current/legacy-images/netboot/mini.iso

  Actual results:
  * ubuntu-mini-iso is not usable and really useless - shows the following text in the QEMU terminal:

  ```
  available memory insufficient
  requested 2008MiB
  available 1024MiB
  failed to determine size reservation for memmap, debug shell
  ```

  Additional notes: it seems that Ubuntu has turned into wrong
  direction, users of mini.iso should and will switch to Debian.

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