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Due to the current gap in continued funding from the U.S. National Science Foundation (NSF), the NSF Unidata Program Center has temporarily paused most operations. See NSF Unidata Pause in Most Operations for details.
HDF says the (superblock format) differences are:
Version 0 is the default format
Version 1 is the same as version 0 but with the “Indexed Storage
Internal Node K” field for storing non-default B-tree ‘K’ value.
Version 2 has some fields eliminated and compressed from superblock
format versions 0 and 1. It has added checksum support and
superblock extension to store additional superblock metadata.
Version 3 is the same as version 2 except that the field “File
Consistency Flags” is used for file locking. This format version
will enable support for the latest version.
It is possible that the H5Pget_version indicates not the true number,
but rather the lowest externally detectable version number or some such.
Do you have a pure hdf5 1.10 file to see that superblock number is
reported by ncdump -hs?
Or did you do a hex dump to see what is actually in the superblock?
=Dennis Heimbigner
Unidata
On 6/3/2016 4:11 PM, Dave Allured - NOAA Affiliate wrote:
Netcdf group, My team is starting to test netcdf-4.4.1-rc2 with the latest HDF5 library, currently 1.10.0-patch1. I see that netcdf-4 files are now being generated with superblock version 0 for the first time in the history of netcdf-4. Presumably this is a result of the recent format compatibility fix in 4.4.1. All the older netcdf-4 files that I sampled, back to the original netcdf-4.0 (2008), were created as superblock version 2. Are there any indications whether superblock 0 will be robust and interoperable, going into the future? --Dave _______________________________________________ NOTE: All exchanges posted to Unidata maintained email lists are recorded in the Unidata inquiry tracking system and made publicly available through the web. Users who post to any of the lists we maintain are reminded to remove any personal information that they do not want to be made public. netcdfgroup mailing list netcdfgroup@xxxxxxxxxxxxxxxx For list information or to unsubscribe, visit: http://www.unidata.ucar.edu/mailing_lists/
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