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fix: make docs backports idempotent #163

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fix: make docs backports idempotent #163

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449fd97
fix: make docs backports idempotent
Piotr1215 Nov 5, 2026
57aa60d
fix: recover interrupted docs backports safely
Piotr1215 Nov 12, 2026
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6 changes: 6 additions & 0 deletions README.md
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Expand Up @@ -68,6 +68,12 @@ Add labels to PRs to specify which version(s) to backport to:
- `backport-v0.22` - Backport to vcluster v0.22
- `backport-v4.2` - Backport to platform v4.2

## Retrying a failed backport

Rerun the failed job. The action resumes its deterministic `backport/<folder>-to-<version>-pr-<number>` branch, skips completed writes, and opens the missing PR. Folder checks and rename patches use the branch's original merge base with the default branch. Keep these branches owned by the action; do not merge the default branch into them while recovering a failed run.

A `backport-lock/<folder>-to-<version>-pr-<number>` branch acts as an atomic writer lock. Concurrent deliveries skip while it exists. Handled failures release it so a retry can continue. A cancelled job or killed runner may leave the lock behind. If a retry logs that the lock is held, confirm that all writers for that source PR and target have stopped, then remove only the matching lock branch and rerun. Keep the `backport/` branch and its changes.

## Development

### Prerequisites
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