SolFS: An Operation-Log Versioning File System for Hash-free Efficient Mobile...

on YouTube ↗20m

" summary

SolFS implements an operation-log versioning file system that records each write as per-file mergeable operation logs (offset+length stored in an extent tree), persists compacted logs and maintains version chains so backup clients ask for a version number and receive precise modified ranges without hashing. Implementation adds dynamic granularity for space/accuracy tradeoffs and a compact on-disk format. Evaluation shows hash-free delta identification reduces CPU on client/server by over 90% on average and cuts total sync time by ~88.8%, with only ~6% write throughput loss and ~500 KB extra memory.

AI-written summary · about

" chapters (12)

1. 0:00SolFS and mobile cloud backup
2. 1:00Mobile cloud backup motivation
3. 3:56Limitations of file versioning
4. 6:26SolFS design and architecture
5. 8:09Per-file operation locking
6. 12:09MLO versioning for backup
7. 13:56Hash-free synchronization
8. 15:41Evaluation setup and baselines
9. 16:43Synchronization time gains
10. 17:49Hash computation reduction
11. 18:55System efficiency analysis
12. 19:16Conclusion and future work