Do the block maintainers have any feedback on this ?
It would nice to get more of the block I/O tests gating merges
before we get regressions sneaking back in.....
On Wed, Mar 04, 2026 at 02:21:05PM +0000, Daniel P. Berrangé wrote:
> 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
>
With regards,
Daniel
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