[Fusion] Troubleshooting error codes #1007
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christopher-hakkaart
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Jan 12, 2026
christopher-hakkaart
commented
- Update headers and sections
- Make into multiple pages
- Start migration error messages
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| - **Ambiguity of exit codes**: As the container entrypoint, the container's final exit code can originate from either Fusion itself (e.g., exit code `174`) or from the task's actual command. When a container exits with a failure code, there's no immediate way to determine the source of the failure without examining logs. | ||
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| - **Mixed log outputs**: Fusion also emits errors to stdout, where they typically mix with the task output. They are indistinguishable from a task's own errors when you review the task's logs. |
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@alberto-miranda is this still the case with our improved error logging?
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| This page describes Fusion's error reporting system, including exit codes, FUSE status codes (errno values), cloud provider error categories, and internal error types. | ||
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| ## Architectural limitations |
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I'm actually not sure we need to have this whole section at the moment. This just looks like us listing our product flaws and I'm not sure how much value it provides to the end user (other than us saying 'Fusion has limitations' - surely their response will be 'well then fix it?' As internal documentation it makes sense
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