HDF5 files do not have an error recovery mechanism and do not journal.
There is an optional per-variable error checksum
Fletcher32, which will return an error on data corruption.
- Checking/comparing file size alone is not an adequate check for HDF5 corruption.
Here a few easy techniques to check for corrupted HDF5 files.
h5tester.py checks HDF5 files for corruption and optionally finds the corrupted block(s)
apt install hdf5-tools
You can also print the data values in the file
GUI HDF5 checker
HDFview appears to use the Fletcher32 checksum to show a red question mark if corruption is detected. Another curiosity is that the Object reference is 2^32 - 1 on the corrupted variable.