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• how does the management server detect failed tasks
• when will it take action
• what it will perform to cleanup the storage.

management server and SSVM agent interaction

management server polling the SSVM agent

State machine 

Template/Volume go through below state machine state transitions, when it goes through the browser based upload.

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• Transition5: The post request hasn't happened and the timeout has reached

recovery mechanisms

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Cleanup

Of the error categories defined above,

• pre validation errors will not result in any download and hence no cleanup is required.
• post validation errors, template/volume will

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Cleanup

Of the error categories defined above,

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• be cleaned
• http errors shall be caught in the appropriate events and the partially downloaded file will be cleaned.
• application errors and interruptions: template/volume sync will handle these when the SSVM is restarted.

recovery mechanisms

There isnt any recovery or retry mechanism as this is a POST request. Once errored, template/volume will remain in the error state and admin will be able to troubleshoot it based on the appropriate log messages in management server log, agent log, apache access/error log files

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.

Security

SSVM public ip will be given to the end user in the response to getUploadParams. This is required as it is the location to which the template/volume has to be uploaded.

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