[Bug 2028862] Re: Mantic hangs during install with continuous 'Job snapd.seeded.service/start running' messages

[Heinrich Schuchardt]

With today's mantic-live-server-riscv64.img.gz the problem cannot be
observed anymore.

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Title:
  Mantic hangs during install with continuous 'Job
  snapd.seeded.service/start running' messages

Status in snapd:
  Invalid
Status in subiquity:
  Invalid
Status in Ubuntu on IBM z Systems:
  In Progress
Status in livecd-rootfs package in Ubuntu:
  Fix Released

Bug description:
  While trying to install the latest mantic ISO image (tried current and
  pending) on s390x (but it's probably not limited to a certain
  architecture) the installation hangs with never-ending messages like
  this:

  M[K[[0;1;31m*[0m[0;31m*    [0m] Job snapd.seeded.service/start running (16min 23s / no limit)
  M[K[[0m[0;31m*     [0m] Job snapd.seeded.service/start running (16min 23s / no limit)
  M[K[[0;1;31m*[0m[0;31m*    [0m] Job snapd.seeded.service/start running (16min 24s / no limit)
  M[K[[0;31m*[0;1;31m*[0m[0;31m*   [0m] Job snapd.seeded.service/start running (16min 24s / no limit)
  M[K[ [0;31m*[0;1;31m*[0m[0;31m*  [0m] Job snapd.seeded.service/start running (16min 25s / no limit)
  M[K[  [0;31m*[0;1;31m*[0m[0;31m* [0m] Job snapd.seeded.service/start running (16min 25s / no limit)
  M[K[   [0;31m*[0;1;31m*[0m[0;31m*[0m] Job snapd.seeded.service/start running (16min 26s / no limit)
  M[K[    [0;31m*[0;1;31m*[0m] Job snapd.seeded.service/start running (16min 26s / no limit)
  M[K[     [0;31m*[0m] Job snapd.seeded.service/start running (16min 27s / no limit)
  M[K[    [0;31m*[0;1;31m*[0m] Job snapd.seeded.service/start running (16min 27s / no limit)
  M[K[   [0;31m*[0;1;31m*[0m[0;31m*[0m] Job snapd.seeded.service/start running (16min 28s / no limit)
  M[K[  [0;31m*[0;1;31m*[0m[0;31m* [0m] Job snapd.seeded.service/start running (16min 28s / no limit)
  M[K[ [0;31m*[0;1;31m*[0m[0;31m*  [0m] Job snapd.seeded.service/start running (16min 29s / no limit)
  M[K[[0;31m*[0;1;31m*[0m[0;31m*   [0m] Job snapd.seeded.service/start running (16min 29s / no limit)
  M[K[[0;1;31m*[0m[0;31m*    [0m] Job snapd.seeded.service/start running (16min 30s / no limit)
  M[K[[0m[0;31m*     [0m] Job snapd.seeded.service/start running (16min 30s / no limit)
  M[K[[0;1;31m*[0m[0;31m*    [0m] Job snapd.seeded.service/start running (16min 31s / no limit)
  M[K[[0;31m*[0;1;31m*[0m[0;31m*   [0m] Job snapd.seeded.service/start running (16min 31s / no

  (sorry for the 'special' characters, but it's because I copied the
  content from the HMC console)

  I was told that using the kernel arg
  "systemd.mask=snapd.seeded.service" should help to workaround this,
  still need to try this out ...

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