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# Script_Optfs #
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Authors: Tom Gong and Subrat Mainali
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### What is Script_Optfs? ###
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Script_Optfs is a conversion tool, capable of converting libraries that use `fsync` pessimistically to be compatible with the Optimistic File System ([OptFS](https://github.com/utsaslab/optfs)).
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OptFS is a linux-ext4 variant that implements [Optimistic Crash Consistency](http://research.cs.wisc.edu/adsl/Publications/optfs-sosp13.pdf) which essentially makes the same level of guarantee as Pessimistic Crash Consistency (`fsync()` after every write) with sometimes the same speed as Probabilistic Crash Consistency (never calling `fsync()`).
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