sdk-debos-image-building: test failed

Image versions

• apertis_v2021-basesdk-amd64-sdk_20210507.0115.img.gz

Steps to reproduce

See https://qa.apertis.org/sdk-debos-image-building.html

Impact

Most of the time the test is succeeding, see https://lavaphabbridge.apertis.org/report/v2021/20210512.0115/apt#sdk-debos-image-building

Sometimes it fails on the image and the bmap that the test itself generated with a checksum mismatch:

bmaptool: info: copying image 'sample-production-v2021-minimal-armhf.img.gz' to file 'fake-sdcard.raw' using bmap file 'sample-production-v2021-minimal-armhf.img.bmap'
bmaptool: [91mERROR[0m: An error occurred, here is the traceback:
Traceback (most recent call last):
  File \"/usr/lib/python3/dist-packages/bmaptools/CLI.py\", line 489, in copy_command
    writer.copy(False, not args.no_verify)
  File \"/usr/lib/python3/dist-packages/bmaptools/BmapCopy.py\", line 583, in copy
    reraise(exc_info[0], exc_info[1], exc_info[2])
  File \"/usr/lib/python3/dist-packages/six.py\", line 693, in reraise
    raise value
  File \"/usr/lib/python3/dist-packages/bmaptools/BmapCopy.py\", line 531, in _get_data
    chksum, self._image_path))
bmaptool: [91mERROR[0m: checksum mismatch for blocks range 62468-62834: calculated bd080f92c30abfa8a995a77ebbee217f6989a02460107c282dbe05c00f111748, should be e88cd868257ae57f5beee2058db39269ee70148c360ac76519146631a581e72c (image file sample-production-v2021-minimal-armhf.img.gz)

The issue seems to be due to debos failing to umount at the end of a recipe:

2021/06/08 18:11:21 ==List files on sample-production-v2021-minimal-armhf ====
==========
2021/06/08 18:11:26 Warning: Failed to get unmount /: device or resource busy
2021/06/08 18:11:26 Unmount failure can cause images being incomplete!
2021/06/08 18:11:26 ==Create block map for sample-production-v2021-minimal-armhf.img ====
==========

Logs

https://lava.collabora.co.uk/results/3760604/12_sdk-debos-image-building

Outcomes

• fix failure on v2021 due to tdb removal (T7887): apertis-image-recipes!379 (merged) (not related to the error above)
• fix failure on v2022dev3 due to broken recipe apertis-image-recipes!415 (merged)
• disable kvm on sdk-debos-image-building test case:
  • v2023dev2 tests/apertis-test-cases!449 (merged)
  • v2022: tests/apertis-test-cases!450 (merged)
• Fix debos recipe steps order: apertis-image-recipes!533 (merged)
• Fix removing the KVM module in v2021: tests/apertis-test-cases!477 (merged)

Management data

This section is for management only, it should be the last one in the description.

apertis:lava:suite: sdk-debos-image-building

Phabricator link: https://phabricator.apertis.org/T7879