ci: port CentOS Stream test to GitHub Actions using Lima#2967
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adrianreber wants to merge 2 commits intocheckpoint-restore:criu-devfrom
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ci: port CentOS Stream test to GitHub Actions using Lima#2967adrianreber wants to merge 2 commits intocheckpoint-restore:criu-devfrom
adrianreber wants to merge 2 commits intocheckpoint-restore:criu-devfrom
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Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## criu-dev #2967 +/- ##
============================================
- Coverage 57.76% 57.16% -0.61%
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Files 142 154 +12
Lines 37664 40278 +2614
Branches 0 8831 +8831
============================================
+ Hits 21758 23024 +1266
- Misses 15906 16990 +1084
- Partials 0 264 +264 ☔ View full report in Codecov by Sentry. 🚀 New features to boost your workflow:
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The thread-bomb test frequently fails during setup with
pthread_create() returning EAGAIN (errno 11). The test creates
1024 threads in a tight loop from main(), and each of those
threads immediately spawns another thread that joins its
predecessor, resulting in a burst of ~2048 simultaneous thread
creations with 64KB stacks.
This burst causes transient EAGAIN errors from clone() due to
kernel resource pressure (VMA allocator contention, temporary
memory fragmentation, etc.). The failure is not related to hard
resource limits — ulimit, threads-max, max_map_count and cgroup
pids limits are all well above the required values. The failure
occurs both inside and outside containers and is worse on hosts
with fewer resources.
Measured failure rates on a 16GB / 9-CPU host:
Before fix: 65% failure rate (13/20 outside container)
After fix: ~2.5% failure rate (1/40), and that failure was
a C/R issue, not a pthread_create EAGAIN
Fix this by adding a pthread_create_retry() wrapper that retries
pthread_create() up to 50 times with a 10ms delay when it returns
EAGAIN. This gives the kernel time to reclaim resources between
attempts while keeping the total worst-case retry time under one
second per thread creation.
Assisted-by: Claude:claude-opus-4-6
Signed-off-by: Adrian Reber <areber@redhat.com>
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Move the CentOS Stream 9 based test from Cirrus CI to GitHub Actions using Lima VMs. Expand coverage to a matrix of CentOS Stream 9 and 10 on x86_64. Extract the common Lima VM setup steps (Lima install, image caching, KVM enablement, VM start, source copy) into a reusable composite action at .github/actions/lima-vm-setup. Assisted-by: Claude:claude-opus-4-6 Signed-off-by: Adrian Reber <areber@redhat.com>
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Move the CentOS Stream 9 based test from Cirrus CI to GitHub Actions using Lima VMs. Expand coverage to a matrix of CentOS Stream 9 and 10 on both x86_64 and aarch64.
The new job follows the same Lima-based pattern introduced for the Fedora Rawhide test but runs the local CI target directly in the VM instead of inside a container.
Depends on #2961