[PATCH v5 00/15] tests: do more testing of block drivers

["Daniel P. Berrangé" <berrange@redhat.com>]

 v1: https://lists.nongnu.org/archive/html/qemu-devel/2025-10/msg01650.html
 v2: https://lists.nongnu.org/archive/html/qemu-devel/2026-01/msg02083.html
 v3: https://lists.nongnu.org/archive/html/qemu-devel/2026-01/msg02939.html
 v4: https://lists.nongnu.org/archive/html/qemu-devel/2026-02/msg03245.html

The recent (at the time of v1) set of regressions identified in the LUKS
block driver re-inforced that despite having a hugely useful set of I/O
tests, our CI coverage is still letting through too many bugs.

The core goals of this series were/are:

 * Add LUKS and NBD to the tested formats/protocols
   integrated into "make check-block SPEED=thorough"

 * Ensure that all qcow2 tests can be run with "SPEED=slow",
   not staying limited to only the 'auto' group used by the
   'make check-block' target in its default 'quick' mode

 * Add  'make check-block-$FORMAT' to expose a standalone
   target for running all tests for a given format (or
   equivalently a protocol)

 * Add GitLab CI jobs for exercising tests for all formats

A sample pipeline for this is

  https://gitlab.com/berrange/qemu/-/pipelines/2258731804/

Showing the 'block-FORMAT' jobs which test the 10 block formats/protocols
currently enabled.

This series fixes a couple of bugs

 * Test 128 check for device mapper usage doesn't work
   sufficiently well to detect gitlab's containe env
   can't do dynamic devfs

 * Test 185 is reliably failing on gitlab

 * Two tests fail when run on CentOS 9 because they trigger
   python deprecation warnings. This will be fixed when the
   python-qemu-qmp module is next released.

Testing of pipelines throughout development of v1-v5 postings does not
exhibit any non-deterministic failures with the shared runners. Hopefully
that will apply to QEMU's private runners used forthe staging tree too.

At this point it is a chicken & egg problem though.

If we don't bite the bullet and enable block I/O tests in GitLab CI for
everyone, we'll never find out if they're truely stable enough to rely
on.

As a mitigation against instability a patch in this series adds a new
QEMU_TEST_IO_SKIP env variable that we are able to set as a GitLab CI
env variable. This lets us skip broken tests dynamically without waiting
for a git commit to disable them in the buildtest.yml config that we
use for disabling the 3 known broken tests currently.

Changed in v5:

  - Adapt for python-qemu-qmp being spun off, by temp disabling
    tests that are broken by it, that we formerly fixed in-tree.

Changed in v4:

  - Remove tests from build-tcg-disabled job

Changed in v3:

  - Test whether dmsetup create device appeared or not, instead
    of unconditionally skipping test 128 in GitLab
  - Use 'driver' term instead of 'format' or 'protocol'
  - Fix misc typos & rephrasing

Daniel P. Berrangé (15):
  gitlab: ensure all meson jobs capture build/meson-logs by default
  tests: print reason when I/O test is skipped in TAP mode
  tests: remove redundant meson suite for iotests
  tests: ensure all qcow2 I/O tests are able to be run via make
  scripts/mtest2make: ensure output has stable sorting
  scripts/mtest2make: support optional tests grouping
  tests: add a meson suite / make target per block I/O tests format
  docs/devel/testing: expand documentation for 'make check-block'
  tests: add nbd and luks to the I/O test suites
  tests: use 'driver' as collective term for either format or protocol
  tests: validate dmsetup result in test 128
  tests: fix check for sudo access in LUKS I/O test
  tests: add QEMU_TEST_IO_SKIP for skipping I/O tests
  gitlab: add jobs for thorough block tests
  gitlab: remove I/O tests from build-tcg-disabled job

 .gitlab-ci.d/buildtest-template.yml |  30 +++++---
 .gitlab-ci.d/buildtest.yml          | 115 +++++++++++++++++++++++++---
 docs/devel/testing/main.rst         |  33 +++++++-
 scripts/mtest2make.py               |  30 +++++---
 tests/Makefile.include              |   3 +-
 tests/qemu-iotests/128              |   6 ++
 tests/qemu-iotests/149              |  13 ++--
 tests/qemu-iotests/meson.build      |  59 ++++++++++++--
 tests/qemu-iotests/testrunner.py    |  18 ++++-
 9 files changed, 258 insertions(+), 49 deletions(-)

-- 
2.53.0