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fix(host): bound host-environment cleanup and reclaim leaked scratch dirs (#1024)

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Fixes #1023.

## Problem
In Windows host mode, a single stalled delete syscall (AV/EDR filter driver, unresponsive mount, dying disk) wedged the job forever at `Cleaning up container`. `HostEnvironment.Remove()` bounds every teardown phase (`terminateRunningProcesses`, both `removePathWithRetry` calls) except the `CleanUp` callback — an unbounded `os.RemoveAll(miscpath)` assigned in `startHostEnvironment`. The runner then held its capacity slot indefinitely, the task was reaped as a zombie, and there were no diagnostics.

## Fix
- **Bound the cleanup (availability):** `Remove()` now runs `CleanUp` under `hostCleanupTimeout` (30s) via `runWithTimeout`; on timeout it logs a warning and continues job completion. The stuck goroutine is left to finish (a delete syscall can't be interrupted). Added debug logs around the phase.
- **Reclaim the leak (disk hygiene):** a timed-out cleanup can leave a scratch dir behind, so the existing idle stale-dir sweep is extended to also remove orphaned host-mode scratch dirs (16-hex names) under `Host.WorkdirParent`, leaving the shared `tool_cache` and operator data untouched. The `bind_workdir` gate is dropped from `shouldRunIdleCleanup` so host-mode runners run the sweep.

Reviewed-on: https://gitea.com/gitea/runner/pulls/1024
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
Nicolas
2026-06-14 14:14:43 +00:00
parent 56979e6ab8
commit 33e6d1d8ff
6 changed files with 302 additions and 31 deletions
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4
internal/pkg/config/config.go
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@@ -33,8 +33,8 @@ type Runner struct {
FetchTimeout time.Duration `yaml:"fetch_timeout"` // FetchTimeout specifies the timeout duration for fetching resources.
FetchInterval time.Duration `yaml:"fetch_interval"` // FetchInterval specifies the interval duration for fetching resources.
FetchIntervalMax time.Duration `yaml:"fetch_interval_max"` // FetchIntervalMax specifies the maximum backoff interval when idle.
WorkdirCleanupAge time.Duration `yaml:"workdir_cleanup_age"` // WorkdirCleanupAge removes stale bind-workdir task directories older than this duration during idle cleanup.
IdleCleanupInterval time.Duration `yaml:"idle_cleanup_interval"` // IdleCleanupInterval runs stale bind-workdir cleanup periodically while the runner is idle. Set to 0 to disable cleanup cadence.
WorkdirCleanupAge time.Duration `yaml:"workdir_cleanup_age"` // WorkdirCleanupAge removes stale bind-workdir task directories and orphaned host-mode scratch dirs older than this duration during idle cleanup.
IdleCleanupInterval time.Duration `yaml:"idle_cleanup_interval"` // IdleCleanupInterval runs stale-directory cleanup periodically while the runner is idle. Set to 0 to disable cleanup cadence.
LogReportInterval time.Duration `yaml:"log_report_interval"` // LogReportInterval specifies the base interval for periodic log flush.
LogReportMaxLatency time.Duration `yaml:"log_report_max_latency"` // LogReportMaxLatency specifies the max time a log row can wait before being sent.
LogReportBatchSize int `yaml:"log_report_batch_size"` // LogReportBatchSize triggers immediate log flush when buffer reaches this size.