Hi, I'm Vijay Chidambaram, an Assistant Professor at the University of Texas at Austin. My research group is developing CrashMonkey, a file-system agnostic framework to test file-system crash consistency on power failures. We are developing CrashMonkey publicly at Github [1]. This is very much a work-in-progress, so we welcome feedback. CrashMonkey works by recording all the IO from running a given workload, then *constructing* possible crash states (while honoring FUA and FLUSH flags). A crash state is the state of storage after an abrupt power failure or crash. For each crash state, CrashMonkey runs the filesystem-provided fsck on top of the state, and checks if the file-system recovers correctly. Once the file system mounts correctly, we can run further tests to check data consistency. The work was presented at HotStorage 17. The workshop paper is available at [2] and the slides at [3]. Our plan was to post on the mailing lists after reproducing an existing bug. We are not there yet, but I saw some posts where others were considering building something similar, so I thought I would post about our work. [1] https://github.com/utsaslab/crashmonkey [2] http://www.cs.utexas.edu/~vijay/papers/hotstorage17-crashmonkey.pdf [3] http://www.cs.utexas.edu/~vijay/papers/hotstorage17-crashmonkey-slides.pdf Thanks, Vijay Chidambaram http://www.cs.utexas.edu/~vijay/
