System and method to achieve an uninterrupted file level backup using a pass-through snapshot engine

A method for backups, using pass-through snapshots, comprising:

• recording, in a pass-through snapshot in a memory, life cycle data of each file or object a backup agent routes to an operational buffer, during a backup session;
• recording, in the pass-through snapshot in the memory, chronological status of each file or object the operational buffer routes to a target storage device, during the backup session;
• freezing the pass-through snapshot in the memory and terminating the backup session, responsive to an abort;
• sending one or more pass-through snapshots to the backup agent;
• and
• restarting the backup session after the abort, with the backup agent enforcing states of lifecycle and chronology to files or objects and discarding files or objects that have already been backed up to the target storage device, in accordance with the one or more pass-through snapshots.

A non-transitory computer-readable medium having instructions thereupon which, when executed by a processor, cause the processor to:

• record, in a pass-through snapshot, life cycle data of each file or object a backup agent routes to an operational buffer, during a backup;
• record, in the pass-through snapshot, chronological status of each file or object the operational buffer routes to a target device for storage of backed up files or objects, during the backup;
• freeze the pass-through snapshot and terminate the backup, responsive to an abort;
• and
• send one or more pass-through snapshots to the backup agent so that the backup agent restarts the backup, enforces states of lifecycle and chronology to files or objects and discards files or objects that have already been backed up to the target device, in accordance with the one or more pass-through snapshots, to restart after the abort.