[PATCH v3 0/8] Hanging mount fixes

[Anton Mikanovich <amikan@ilbers.de>]

Consolidate the patches to address the hanging mount issues.

Addresses the following issues:

 1. Cleanup handler is called multiple times, unmounting any hanging
    mounts.

 2. Hanging mount warnings are discarded in the current setup.

 3. Incorrect asymmetric mount-umount logic inherited from buildchroot
    times.

In this series, cleanup is done in reverse /proc/mounts order to
unmount e.g. /dev/shm before /dev. This happens to work for us today
but we could perform stricter semantic ordering if necessary.

ISAR_FAIL_ON_CLEANUP=1 can be set in the environment to fail builds if
mounts are left behind. We will use this for Isar CI. The default is 0.

p1 comes from 'Additional CI improvements' series.
Patches p4-p6 come from v2 of 'Start to address umount problems' series
by Jan.
p7 comes from 'Fix leftover mounts in rootfs.bbclass' by Florian.
p2, p3 and p8 are new one.

Anton Mikanovich (4):
  CI: Do not lose output on bitbake / qemu exit
  isar-events: Unhide mounts left behind
  CI: Pass ISAR_FAIL_ON_CLEANUP from environment to bitbake
  image: Do not call rootfs_do_umounts twice

Florian Bezdeka (1):
  rootfs: Add missing umounts in rootfs_postprocess() and
    rootfs_install()

Jan Kiszka (3):
  image: Avoid breaking the build when mounts are no longer present on
    umount
  rootfs: Provide rootfs_do_umounts
  initramfs: Add missing umounts after generation

 RECIPE-API-CHANGELOG.md          | 15 ++++++++
 meta/classes/image.bbclass       | 19 ----------
 meta/classes/initramfs.bbclass   |  2 +
 meta/classes/isar-events.bbclass | 40 ++++++++++++++++----
 meta/classes/rootfs.bbclass      | 63 ++++++++++++++++++++++++++------
 testsuite/cibuilder.py           | 13 +++++--
 6 files changed, 110 insertions(+), 42 deletions(-)

-- 
2.34.1

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