[Bug 1768230] Re: Long time booting : Failed to connect to lvmetad. Falling back to device scanning.

[Steve Langasek]

Two bugs:
- ubiquity creates an /etc/initramfs-tools/conf.d/resume which lists the swap device by UUID; this is not the correct way to reference a device that's on LVM, and with the current lvm initramfs hooks it fails because it won't be found to be activated.
- if /etc/initramfs-tools/conf.d/resume is absent, initramfs-tools itself auto-creates a file on update-initramfs -u that references the uuid.

We need to fix both.

I'm not sure if we should add some upgrade handling to detect broken
/etc/initramfs-tools/conf.d/resume for this case and remove it on
upgrade.

** Also affects: ubiquity (Ubuntu)
   Importance: Undecided
       Status: New

** Changed in: ubiquity (Ubuntu)
   Importance: Undecided => High

** Changed in: ubiquity (Ubuntu)
       Status: New => Triaged

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https://bugs.launchpad.net/bugs/1768230

Title:
  Long time booting : Failed to connect to lvmetad. Falling back to
  device scanning.

Status in initramfs-tools package in Ubuntu:
  In Progress
Status in ubiquity package in Ubuntu:
  Triaged

Bug description:
  After choosing "Erase disk and install ubuntu" + "Use LVM with the new Ubuntu installation", the
  system is very slow to reboot.

  It shows the message : "WARNING:Failed to connect to lvmetad. Falling back to device scanning.",
  then waits 32 seconds, then continues as it should.

  I think this is a ubiquity bug, since the d-i based installer is not affected.
   - ubuntu-18.04-desktop-amd64.iso (a55353d837cbf7bc006cf49eeff05ae5044e757498e30643a9199b9a25bc9a34) : affected
   - xubuntu-18.04-desktop-amd64.iso (7c24318d3b1de1efd584b5aea034ce1aafd2d0f06c59812d989a5fc95bf947e3) : affected
   - ubuntu-18.04-server-amd64.iso (a7f5c7b0cdd0e9560d78f1e47660e066353bb8a79eb78d1fc3f4ea62a07e6cbc) : not affected

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