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📝 WalkthroughWalkthroughDeployment preparation now snapshots container volume mounts before orphan cleanup. It passes the mounts to volume setup so route redeployments can reuse existing volumes. Tests cover exited and running containers. ChangesRoute volume reuse
Priority: ⬆️ High Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Bug fix · Severity of issue fixed: High Sequence Diagram(s)sequenceDiagram
participant prepareDeployResources
participant ContainerList
participant cleanupOrphanedContainers
participant setupVolumes
prepareDeployResources->>ContainerList: list all containers
prepareDeployResources->>cleanupOrphanedContainers: pass the listing
prepareDeployResources->>setupVolumes: pass preferred volume mounts
setupVolumes-->>prepareDeployResources: reuse existing volumes
Merge Risk: 🟡 Moderate · up to A failed replacement can leave a later redeploy unable to verify and reuse a legacy volume, requiring manual recovery. This should be fixed before merge. 🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (2 warnings)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation The changes satisfy the main [ Resolution Implement unchanged-config ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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prepareDeployResources now snapshots the canonical container's named volume mounts from the same listing the orphan cleanup consumes, and passes them as preferred volumes to setupVolumes. After a reboot the owner is exited and cleanup deletes it before volume resolution runs, which previously destroyed the only proof of volume ownership and made the deploy fail closed (or boot on a fresh empty volume pre-#236). Listing is shared between snapshot and cleanup so no extra ListContainers call is added to the deploy path; callers with existing mock budgets are unaffected. Closes #277
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🟡 Changes recommended
Orphan cleanup can still discard the sole volume owner in listing-failure and temporary-container scenarios.
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Pull request overview
Preserves route data volumes during reboot-triggered redeployment.
Changes:
- Snapshots named-volume mounts before orphan cleanup.
- Reuses preferred volumes during setup.
- Adds regression and nominal redeployment tests.
Required fixes:
- Fail before cleanup if the initial container listing fails; otherwise retry cleanup can remove the owner without preserving its mounts.
- Preserve mounts from valid exited
-newand-nextcontainers with deterministic precedence.
File summaries
| File | Description |
|---|---|
internal/usecase/container/service.go |
Adds exited-owner volume reuse; two ownership-loss cases remain unresolved. |
internal/usecase/container/service_test.go |
Tests exited and running owner-volume reuse. |
Review details
Suppressed comments (1)
internal/usecase/container/service.go:589
- Cleanup still removes the exited owner before image, attachment, environment, and volume preparation have succeeded. If any later step fails, this call returns and loses the in-memory snapshot; the next retry can no longer verify the legacy volume and fails closed (or selects an existing stable replacement). Resolve and validate the preferred volumes first, then remove the old container immediately before creation.
if err := s.cleanupOrphanedContainers(ctx, route.Domain, existingID, allContainers); err != nil {
log.WrapErr(err, "failed to cleanup orphaned containers")
}
- Files reviewed: 2/2 changed files
- Comments generated: 2
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Comment on lines
+579
to
+582
| allContainers, err := s.runtime.ListContainers(ctx, true) | ||
| if err != nil { | ||
| log.WrapErr(err, "failed to list containers for deploy, proceeding without volume snapshot") | ||
| } |
Comment on lines
+2692
to
+2694
| for _, c := range allContainers { | ||
| if c.Name != managedContainerName(domainName) { | ||
| continue |
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Actionable comments posted: 4
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Inline comments:
In `@internal/usecase/container/service_test.go`:
- Line 1883: Extend TestService_PrepareDeployResources_ReusesExitedOwnerVolumes
with a case where a container has the canonical gordon-<domain> name but
an unrelated or missing managed route label, then assert
snapshotRouteVolumeMounts returns nil and deployment resolves volumes through
the normal path without using the foreign mounts.
In `@internal/usecase/container/service.go`:
- Around line 2691-2699: Update snapshotRouteVolumeMounts to require an explicit
domainName match in the container’s route label before returning
namedVolumeMounts(c); do not rely on isManagedRouteContainerForDomain because
its name-based fallback is always true for candidates already filtered by
managedContainerName. Preserve the existing nil result for non-owned candidates
and align the surrounding comment with this enforced ownership rule.
- Around line 579-582: Update the container-listing flow around
cleanupOrphanedContainers to track whether ListContainers succeeded separately
from whether allContainers is nil. Prevent a second listing after an error,
while also treating a successful empty result as already listed and preserving
the existing cleanup behavior for successfully returned containers.
- Around line 583-586: Filter the result of snapshotRouteVolumeMounts when
existing is nil so volumes no longer present are removed before
validatePreferredVolumes runs. Preserve valid snapshotted volumes and allow
missing ones to proceed through normal volume resolution instead of returning
domain.ErrVolumeNotFound.
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internal/usecase/container/service.gointernal/usecase/container/service_test.go
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Address review findings on the reboot redeploy volume reuse: - Skip orphan cleanup when the deploy listing fails instead of letting a retried listing delete the only remaining evidence of volume ownership. - Run cleanup after volume resolution, so a failed preparation step can no longer leave the route without the owner a retry needs to prove legacy volume ownership. - Snapshot mounts from canonical, -new and -next leftovers that carry the route's ownership labels, with canonical-first precedence; a foreign container squatting a gordon name never contributes mounts. - Treat snapshotted mounts as a hint: a volume deleted while its container was stopped holds no data, so the path falls back to normal resolution instead of failing the deploy with ErrVolumeNotFound. Live mounts from an existing container and from attachments still fail closed. - Re-confirm a leftover is still stopped before removing it, since the listing is taken before the image pull. - Pass the deploy listing into cleanup instead of re-listing it. Refs #278
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Inline comments:
In `@internal/usecase/container/service.go`:
- Line 640: Update the deployment flow around cleanupOrphanedContainers so the
exited owner remains available as ownership evidence until the replacement
container is successfully created, started, and owns the preserved mount. Defer
irreversible removal, or quarantine the owner under a retained name, and only
remove it after successful replacement deployment; preserve retry behavior when
creation or startup fails.
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internal/boundaries/out/runtime.gointernal/usecase/container/service.gointernal/usecase/container/service_test.go
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The reboot redeploy path snapshotted an exited owner's volume mounts and then removed that container before the replacement existed. A failed create, start or readiness check left the route with no container proving which volumes belong to it, so the next deploy could fail closed with ErrVolumeOwnershipUnverified or create empty replacements. The exited owner is now retained as ownership evidence: the replacement is created under a temporary name while the owner keeps its own, and the owner is removed only after the replacement runs. Removal reuses the post-switch finalize path, which stops the previous container and renames the replacement to the canonical name. The owner is kept when the replacement does not mount every preserved volume, so the last proof of ownership is never dropped silently. Cleanup skips it through an explicit keep parameter, leaving the rule for running leftovers unchanged, and stabilization now runs only against a running predecessor, since an exited owner is not a rollback target. Refs #278
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Inline comments:
In `@internal/usecase/container/service.go`:
- Around line 613-614: Update resolveExistingContainer and
deployVolumePreference to retain the exited canonical owner’s mounts when a
temporary replacement is selected, merging missing mounts by destination while
recording their source in fromExitedMounts. In validatePreferredVolumes, relax
missing-volume validation only for paths marked in fromExitedMounts; continue
returning domain.ErrVolumeNotFound for missing mounts originating from the live
container.
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internal/usecase/container/service.gointernal/usecase/container/service_test.go
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A deploy interrupted before its traffic switch can leave the canonical container exited while the temporary replacement keeps running, and resolveExistingContainer then selects the temporary one. Its mounts were the only preference the deploy reused, and cleanup removed the exited owner right after, so a mount that only that container carried was dropped: the path lost its data volume and the last container proving where that volume lived was gone. Mounts of the route's exited containers are now merged into the preference set by destination, with a container that is still there staying authoritative, and the merged paths are recorded per path. Missing-volume validation is relaxed only for paths that came from the exited owner, since a volume deleted while its container was stopped holds no data to preserve; a mount of a container that is still there still fails closed with ErrVolumeNotFound. Refs #278
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Inline comments:
In `@internal/usecase/container/service.go`:
- Line 624: Update mergeExitedOwnerMounts and prepareDeployResources to track
exited container IDs that contribute merged mounts, and pass those IDs as
retained cleanup owners until the replacement mounts those destinations.
Preserve existing merge behavior, and update
TestService_PrepareDeployResources_MergesExitedOwnerMountsIntoRunningTempContainer
to verify the contributing exited owner is neither stopped nor removed.
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When a temporary replacement is left running while the canonical container is exited, its mounts were merged into the deploy preference, but cleanup still removed the exited owner inside prepareDeployResources, before the replacement existed. A create, start or readiness failure then left the merged paths with no container mounting them and no container proving where they lived. Retained owners are a list now. In that case the canonical owner is kept, and dropped synchronously once the replacement is confirmed to mount every volume it preserved, before the finalize step renames the replacement into the canonical name the owner still holds. Exited temporary leftovers that contribute mounts stay out of that list on purpose: keeping one could collide with the alternate temporary name the replacement has to take. Also routes both volume-preference branches through the same merge, and covers the deploy path end-to-end plus the exited-owner selection rules. Refs #278
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Closes #277.
Problem
After a host reboot,
AutoStarttriggers a fullDeployfor each route. The owning container isexited(invisible toresolveExistingContainerandSyncContainers), andprepareDeployResourcesruns orphan cleanup before volume resolution — deleting the only proof of which volume holds the data.legacyVolumeOwnershipthen finds no owner, and the deploy either fails closed (ErrVolumeOwnershipUnverified, post-#236) or boots on a fresh empty volume (pre-#236 behavior, still reachable when a stable volume already exists).Fix
prepareDeployResourcesnow snapshots the canonical container's named volume mounts and passes them as preferred volumes tosetupVolumes— the same pattern #236 established for attachment redeploys. The snapshot is read from the sameListContainerslisting the cleanup pass consumes, so no extra runtime call is added to the deploy path and existing strict mock budgets are unaffected.Ownership guard: only containers passing
isManagedRouteContainerForDomaincontribute mounts, so a foreign workload squatting the canonical name can never inject its volumes.Tests
TestService_PrepareDeployResources_ReusesExitedOwnerVolumes: reboot scenario (exited owner + legacy volume, no stable) → legacy reused, zeroCreateVolume. Verified it FAILS with the snapshot disabled (ErrVolumeOwnershipUnverified).TestService_PrepareDeployResources_PrefersExistingContainerMounts: nominal redeploy path unchanged../internal/usecase/...,./internal/adapters/...,./internal/app/...,./internal/domain/...suites pass;golangci-lint run ./...clean.Out of scope
Routes already affected (empty stable in service + orphaned legacy with data) still need manual recovery — the code cannot guess which volume holds the data. Follow-up: recovery runbook /
volumes adoptcommand per #277 item 4.Summary by CodeRabbit