fix: pre-clean snapshot dir before store#777
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Pull request overview
This PR makes snapshot creation resilient to restarts after a partial snapshot write by pre-cleaning the target snapshot directory before invoking the machine snapshot store.
Changes:
- Pre-remove any existing snapshot directory at the intended output path before creating a new snapshot.
- Add a unit test intended to cover retrying snapshot creation when the target directory already exists.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.
| File | Description |
|---|---|
| internal/advancer/advancer.go | Pre-cleans the snapshot output path before calling CreateSnapshot to avoid failures on existing directories. |
| internal/advancer/advancer_test.go | Adds a test case for handling a pre-existing (stale) snapshot directory. |
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Safeguard against a restart after a partial store.