[gdal-dev] netCDF with virtual file system (/vsicurl/) not working

[Stefan Blumentrath]

Hi,

And thanks for your swift reply, Jukka.
I tried different versions on Linux (Ubuntu: ubuntugis-stable and ubuntugis-unstable):
3.3.2, 3.4.0
Fedora:
3.3.2

On Windows the latest OSGeo4W provided version:
3.4.1 (and there it does not work)

On my Fedora box however, I now compiled GDAL 3.4.1, there it seems to work again...

Cheers
Stefan

From: Rahkonen Jukka (MML) <jukka.rahkonen at maanmittauslaitos.fi>
Sent: onsdag 2. februar 2022 09:49
To: Stefan Blumentrath <Stefan.Blumentrath at nina.no>; gdal-dev <gdal-dev at lists.osgeo.org>
Subject: Re: netCDF with virtual file system (/vsicurl/) not working

Hi,

What is your GDAL version? Check with "gdalinfo --version"

-Jukka Rahkonen-

Lähettäjä: gdal-dev <gdal-dev-bounces at lists.osgeo.org<mailto:gdal-dev-bounces at lists.osgeo.org>> Puolesta Stefan Blumentrath
Lähetetty: keskiviikko 2. helmikuuta 2022 10.36
Vastaanottaja: gdal-dev <gdal-dev at lists.osgeo.org<mailto:gdal-dev at lists.osgeo.org>>
Aihe: [gdal-dev] netCDF with virtual file system (/vsicurl/) not working

Hi,

I have been using GDAL to access online data sources in netCDF successfully.
With Ubuntu 20.04, this unfortunately no longer works with the netCDF driver.

Here is a reproducible example:
gdalinfo -if netCDF /vsicurl/https://nbstds.met.no/thredds/fileServer/NBS/S2A/2021/02/28/S2A_MSIL1C_20210228T103021_N0202_R108_T35WPU_20210228T201033_DTERRENGDATA.nc

The original error message (before working around the HDF5 driver) has been that permissions for the userfaultfd system call were denied. But if I specify the netCDF driver, the format is not recognized. Downloading the dataset and opening It locally works.

I saw some possibly relevant changes:
https://github.com/OSGeo/gdal/pull/4508<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FOSGeo%2Fgdal%2Fpull%2F4508&data=04%7C01%7CStefan.Blumentrath%40nina.no%7C712e34b2580542465b6308d9e628e428%7C6cef373021314901831055b3abf02c73%7C0%7C0%7C637793885589031036%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=8YXTXn0Pc7WWlTK5F6ECh1PocPjazxOahHihakmjpU8%3D&reserved=0>
https://github.com/OSGeo/gdal/issues/2412<https://eur01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2FOSGeo%2Fgdal%2Fissues%2F2412&data=04%7C01%7CStefan.Blumentrath%40nina.no%7C712e34b2580542465b6308d9e628e428%7C6cef373021314901831055b3abf02c73%7C0%7C0%7C637793885589031036%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=9sQzMAyPA54CSZVIdvqkiK0RrFLeainC3FYka0tfPEQ%3D&reserved=0>

Any hint on how to get that functionality back would be very much appreciated!

Cheers
Stefan
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