Object-Oriented Recovery for Non-Volatile Memory

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" summary

NVMReconstruction implements a Clang/LLVM extension plus runtime library that reconstructs persistent C++ objects after restart by zeroing transient fields, fixing virtual table and function pointers, remapping persistent pointers, and running per-type reconstructors; it also supports object migration and heap compaction to enlarge and defragment objects. Integrated with Atlas and used to add recovery to Echo with only 214 lines of code. Evaluation shows under 1% runtime overhead and restart fault handling around 100–200 ms per GB.

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" chapters (19)

1. 0:00Intro
2. 0:18Contributions
3. 0:31Background: Non-Volatile Memory
4. 1:20NVM Lifecycle
5. 2:23Execution Specific Data
6. 4:07Execution Specific Pointers
7. 4:35Execution Specific NVM Pointers
8. 5:22Different mmap addresses
9. 6:14Code Pointers
10. 6:52Existing Solutions
11. 8:48NVM Reconstruction Code
12. 9:45System Behavior
13. 10:19NVM Reconstruction System
14. 10:45NVM Reconstruction Recovery
15. 12:10Lazy Reconstruction
16. 12:56Compaction
17. 14:46Measurements: Atlas
18. 15:42Measurements: Echo KV Store
19. 16:42Conclusions