Bug 1266573

Summary: nor a bug really, rather a conflict with external repo
Product: [Fedora] Fedora EPEL Reporter: lejeczek <peljasz>
Component: netcdfAssignee: Orion Poplawski <orion>
Status: CLOSED CANTFIX QA Contact: Fedora Extras Quality Assurance <extras-qa>
Severity: medium Docs Contact:
Priority: unspecified    
Version: epel7CC: dakingun, jspaleta, lars, orion, pertusus
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Hardware: x86_64   
OS: Linux   
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Fixed In Version: Doc Type: Bug Fix
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Last Closed: 2015-09-26 16:10:12 UTC Type: Bug
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
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Description lejeczek 2015-09-25 16:53:41 UTC 
Description of problem:

having openstack repo, from: https://www.rdoproject.org/Quickstart
there is a conflict between hdf5 versions which openstack also provides.

I was hoping netcdf rpm conditionals can be loosen up:

Error: Package: netcdf-4.3.2-4.el7.x86_64 (@epel)
           Requires: hdf5 = 1.8.12

to maybe: >=

?

regards

Version-Release number of selected component (if applicable):


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Comment 1 Orion Poplawski 2015-09-26 16:10:12 UTC 
Unfortunately not.  hdf5 includes a run-time check of the compiled and loaded version of the library and aborts if they do not match.  Hence the specific version requirement in hdf5 using code.

Perhaps openstack could be persuaded to provide netcdf?
Comment 2 Lars Kellogg-Stedman 2015-10-07 16:43:06 UTC 
Orion: are you certain about that runtime check?

If I install hdf5 from RDO kilo, I do see the conflict when trying to install netcdf from EPEL:

Error: Package: netcdf-4.3.2-4.el7.x86_64 (epel)
           Requires: hdf5 = 1.8.12
           Installed: hdf5-1.8.13-7.el7.x86_64 (@openstack-kilo)
               hdf5 = 1.8.13-7.el7
           Available: hdf5-1.8.12-6.el7.x86_64 (epel)
               hdf5 = 1.8.12-6.el7

However, if I download the package and force install it:

    # yumdownloader netcdf
    # rpm -ivh --nodeps netcdf-4.3.2-4.el7.x86_64.rpm

It seems to work just fine...at least, I can then install netcdf-devel and then build a sample program:

    # yum install netcdf-devel
    # curl -O http://www.unidata.ucar.edu/software/netcdf/examples/programs/simple_xy_wr.c
    # gcc -o simple_xy_wr simple_xy_wr.c -lnetcdf./simple_xy_wr 
    *** SUCCESS writing example file simple_xy.nc!
    # ncdump simple_xy.nc 
    netcdf simple_xy {
    dimensions:
      x = 6 ;
      y = 12 ;
    variables:
      int data(x, y) ;
    data:

     data =
      0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11,
      12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23,
      24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35,
      36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47,
      48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59,
      60, 61, 62, 63, 64, 65, 66, 67, 68, 69, 70, 71 ;

I'm not all that familiar with netcdf, but it *looks* like it works just fine with the version of hdf5 from RDO.
Comment 3 Orion Poplawski 2015-10-07 17:24:10 UTC 
Looks like you just created a netcdf-3 file which doesn't use HDF5.  Pass the NC_NETCDF4 option to nc_create and try again.