The RFC for our proposed Write-Ahead log is now available at https://github.com/HDFGroup/hdf5doc/blob/master/RFCs/HDF5_Library/WriteAheadLog/RFC_WriteAheadLog.pdf (click on “Download raw file”)
If you’re interested in crash resiliency in HDF5, feel free to read through the RFC and let us know if you have any feedback!
Here are some previous posts on this topic:
https://forum.hdfgroup.org/t/crashproofing-hdf5/12003/6
https://forum.hdfgroup.org/t/implementing-crashproofing-in-hdf5-neil-fortner-on-call-the-doctor-tuesday-april-2/12125/1