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[Bug 2111695] Re: [Ubuntu24.04] - curtin - subiquity installation with multiple dasd sizes leads to an error in partitioning

To: debcrafters-packages@xxxxxxxxxxxxxxxxxxx
From: Frank Heimes <2111695@xxxxxxxxxxxxxxxxxx>
Date: Fri, 13 Jun 2025 11:30:34 -0000
Reply-to: Bug 2111695 <2111695@xxxxxxxxxxxxxxxxxx>
Sender: noreply@xxxxxxxxxxxxx

Hi Andre, changing to /dev/disk/by-path/... is a significant change, which is not planned.
For now the only way I think is to ensure that the disk devices are created in the right order, ensuring that they spawn the correct DASD devices.
Would it be possible to introduce a check, whether a DASD was created like you expect or not, and react on that accordingly?
(IF the devices are enabled always in the same order, and always with a single chzdev cmd, they should create reproducible results.)

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https://bugs.launchpad.net/bugs/2111695

Title:
  [Ubuntu24.04] - curtin - subiquity installation with multiple dasd
  sizes leads to an error in partitioning

Status in Ubuntu on IBM z Systems:
  Triaged
Status in curtin package in Ubuntu:
  New
Status in subiquity package in Ubuntu:
  New

Bug description:
  Description:

  Automated installation of Ubuntu 24.04 on LPAR with
  subiquity/cloudinit fails because of wrong dasd partition size.

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