[Bug 1952921] Re: Unmounting fails for local builds

[William Wilson]

I had to revert this change as it was causing failures in autopkgtests.
Can you look into a method for fixing this that doesn't cause
autopkgtest failures?

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https://bugs.launchpad.net/bugs/1952921

Title:
  Unmounting fails for local builds

Status in livecd-rootfs package in Ubuntu:
  New

Bug description:
  livecd-rootfs creates non-private mounts. When building locally using
  the auto/build script unmounting fails.

  To unmount dev/pts it is insufficient to make the mount private. Its 
  parents must be private too.

  Please, change teardown_mountpoint() accordingly. Patch appended.

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