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Build # 22212109152

Build Type

Pull #188

github

Committed by bobuhiro11

Commit Message

ci: improve guest mount reliability, build, and test stability

Background:
Even with the code fixes above, CI remained flaky due to:
- The guest mounting /dev/vda before the virtio-blk driver
  finished probing, causing mount to fail
- srvfiles starting before mount, serving empty responses
- u-root@latest breaking on Go 1.22
- Tests timing out at the default 10m go test deadline
- No mechanism to verify test stability across runs

Guest .bashrc:
- Add virtio diagnostics (dmesg, /proc/partitions, lsblk)
  for post-failure triage
- Add 2s sleep after boot for virtio-blk driver probe
- Replace one-shot mount with retry loop (60 attempts,
  1s interval) to tolerate slow device readiness
- Start srvfiles AFTER successful mount so the first HTTP
  response already contains mounted content

CI workflow:
- Increase job timeout from 60 to 360 minutes to
  accommodate 10x test repetition
- Run tests 10 times: iteration 1 with lint + coverage,
  iterations 2-10 with clean cache (go clean -testcache)

Build (Makefile):
- Pin u-root to v0.13.1 via explicit git clone instead of
  go install @latest (Go 1.22 dropped support for latest
  u-root module path)
- Split u-root into source-tree and binary targets
- Add .bashrc to initrd staleness hash check so initrd
  rebuilds when guest scripts change
- Add -timeout 30m to go test to prevent silent hangs

Signed-off-by: Nobuhiro MIKI <nob@bobuhiro11.net>

Pull Request Pull Request #188: Fix flaky CI tests

Coverage Stats

217 of 265 new or added lines in 6 files covered. (81.89%)

4 existing lines in 1 file now uncovered.

2435 of 3492 relevant lines covered (69.73%)

1.47 hits per line