[Bug 1664731] Re: zesty lvm install hangs while creating device mapper device

[Mathieu Trudel-Lapierre]

** Changed in: debian-installer (Ubuntu Zesty)
       Status: New => In Progress

** Also affects: os-prober (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: debian-installer (Ubuntu Zesty)
       Status: In Progress => Invalid

** Changed in: os-prober (Ubuntu Zesty)
       Status: New => In Progress

** Changed in: os-prober (Ubuntu Zesty)
   Importance: Undecided => Critical

** Changed in: os-prober (Ubuntu Zesty)
     Assignee: (unassigned) => Mathieu Trudel-Lapierre (cyphermox)

** Changed in: os-prober (Ubuntu Zesty)
    Milestone: None => ubuntu-17.03

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https://bugs.launchpad.net/bugs/1664731

Title:
  zesty lvm install hangs while creating device mapper device

Status in debian-installer package in Ubuntu:
  Invalid
Status in os-prober package in Ubuntu:
  In Progress
Status in debian-installer source package in Zesty:
  Invalid
Status in os-prober source package in Zesty:
  In Progress
Status in os-prober package in Debian:
  Fix Released

Bug description:
  Using the ISO dated 20170214, the install appears to hang while
  'Running "update-grub"...'. Changing to console 4 the last message is:

  50mounted-tests: debug: creating device mapper device /dev/mapper
  /osprober-linux-vda1

  During a successful install the following messages are printed and the
  install completes:

  50mounted-tests: debug: creating device mapper device /dev/mapper/osprober-linux-sda1
  50mounted-tests: debug: mounting /dev/mapper/osprober-linux-sda1 (/dev/sda1) as LVM2_member failed: mount: mounting: /dev/mapper/osprober-linux-sda1 on /var/lib/os-prober/mount failed: No such device
  50mounted-tests: debug: remove device mapper device /dev/mapper/osprober-linux-sda1
  os-prober: debug: /dev/mapper/ubuntu--vg-swap_1: is active swap

  On a recent instance of this I killed the dmsetup job and the install completed successfully. Something during the create is causing the
  lockup.  

  The preseed used is available [1], however you should be able to do a
  default install using the ppc64el ISO to reproduce this as LVM is now
  the default. The server LVM ISO tests [2] have been failing
  consistently on ppc64el and intermittently on i386 and amd64.

  [1] https://bazaar.launchpad.net/~ubuntu-server-qa/ubuntu-test-cases/server-tests-raring/view/head:/preseeds/lvm.preseed
  [2] https://platform-qa-jenkins.ubuntu.com/view/server/

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