[Bug 1475974] [NEW] installer (ubuntu 15.04) crashes while upgrading from 14.04 with raid0 array

[David]

Public bug reported:

- I've installed 14.04 with a "net install".
- Have a raid0 config not detected by installer of 15.04 (liveusb).
- Installed mdadm and run with --assemble --scan
- /dev/md0 correctly detected --> tried to upgrade distro and then ... bad luck :o( got error #2

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubiquity 2.21.25
ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
Uname: Linux 3.19.0-15-generic x86_64
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
CasperVersion: 1.360
Date: Sun Jul 19 12:26:25 2015
InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: ubiquity (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug ubiquity-2.21.25 ubuntu vivid

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https://bugs.launchpad.net/bugs/1475974

Title:
  installer (ubuntu 15.04) crashes while upgrading from 14.04 with raid0
  array

Status in ubiquity package in Ubuntu:
  New

Bug description:
  - I've installed 14.04 with a "net install".
  - Have a raid0 config not detected by installer of 15.04 (liveusb).
  - Installed mdadm and run with --assemble --scan
  - /dev/md0 correctly detected --> tried to upgrade distro and then ... bad luck :o( got error #2

  ProblemType: Bug
  DistroRelease: Ubuntu 15.04
  Package: ubiquity 2.21.25
  ProcVersionSignature: Ubuntu 3.19.0-15.15-generic 3.19.3
  Uname: Linux 3.19.0-15-generic x86_64
  ApportVersion: 2.17.2-0ubuntu1
  Architecture: amd64
  CasperVersion: 1.360
  Date: Sun Jul 19 12:26:25 2015
  InstallCmdLine: BOOT_IMAGE=/casper/vmlinuz.efi file=/cdrom/preseed/ubuntu.seed boot=casper quiet splash ---
  LiveMediaBuild: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
  ProcEnviron:
   PATH=(custom, no user)
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: ubiquity
  UpgradeStatus: No upgrade log present (probably fresh install)

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