In the map file, turning the DEBUG ON for LAYER and DEBUG 5 for MAP, the
ms_error.txt reports the following:
[Sat Feb 26 10:41:48 2022].874000 msDrawRasterLayerLow(image): entering.
[Sat Feb 26 10:41:48 2022].874000 msDrawRasterLayerLow(image):
Filename is: //192.168.210.150/some/shared_dir/a_float_type_image.tif
[Sat Feb 26 10:41:48 2022].885000 msDrawRasterLayerLow(image): Path
is: //192.168.210.150/some/shared_dir/a_float_type_image.tif
[Sat Feb 26 10:41:48 2022].923000 Corrupt, empty or missing file
'//192.168.210.150/some/shared_dir/a_float_type_image.tif' for layer
'image' ... ignoring this missing data.
[Sat Feb 26 10:41:48 2022].923000 msDrawMap(): Layer 0 (image), 0.054s
However, placing the tif image in the shape data dir, OpenLayers show
correctly in the browser.
Also, gdalinfo.exe
//192.168.210.150/some/shared_dir/a_float_type_image.tif reports
no error, as well as gdal.Open('//
192.168.210.150/some/shared_dir/a_float_type_image.tif') in python.
My guess is, somehow, in mapraster.c line: 650, GDALOpenEx returned NULL
for paths like //192.168.210.150/some/shared_dir/a_float_type_image.tif.
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