Public bug reported:

We (Canonical CPC) are seeing an issue with today's build of the bionic
minimal cloud images. Boot stops at "Starting Initial cloud-init job
(metadata service crawler)..." for nearly 5 minutes (booting on
scalingstack and locally with kvm) this is with a new kernel, but
otherwise no changes over the prior image.

Image (manifest and logs) exhibiting this behaviour @ https://private-
fileshare.canonical.com/~philroche/bionic-minimal-20180703/

With server teams's help we have narrowed it down to "Synchronized to
time server 91.189.91.157:123 (ntp.ubuntu.com)." taking over 4 minutes.

On Kamal's instruction we also tried  linux-kvm 4.15.0-1013.13 and
bionic GA linux (4.15.0-24.26). Both of which also exhibit this
regression.

For reference: Kamal noted on IRC that the problem was possibly
introduced in the GA kernel and is not specific to the kvm kernel.

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: Incomplete


** Tags: bionic

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https://bugs.launchpad.net/bugs/1779961

Title:
  Bionic minimal image boot hang with  linux-image-4.15.0-1012-kvm
  kernel

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