[Bug 964957] Re: Installer warns "Could not stat device /dev/mapper/hostname-root - No such file or directory", works after retry

[Sgifford]

Here is a short video demonstrating the problem and the fix.


** Attachment added: "ubuntu-964957.mp4"
   https://bugs.launchpad.net/ubuntu/+source/partman-auto-lvm/+bug/964957/+attachment/2938346/+files/ubuntu-964957.mp4

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https://bugs.launchpad.net/bugs/964957

Title:
  Installer warns "Could not stat device /dev/mapper/hostname-root - No
  such file or directory", works after retry

Status in “partman-auto-lvm” package in Ubuntu:
  New

Bug description:
  When I try to install Ubuntu Precise Pangolin using LVM for my
  filesystems, it gives me this warning:

    Could not stat device /dev/mapper/hostname-root - No such file or
  directory.

  If I select "Retry", everything works.

  It appears that the LVs are created, but their entries in
  "/dev/mapper" don't exist yet when the rest of the system tries to use
  them.

  I will attach a short video with some more information, along with the
  fix that worked for me.

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