[gdal-dev] not enough disk space for gdal_merge even though I have ~1TB free

[Rahkonen Jukka]

Hi,

Maybe the images are far apart and the merged image would need to contain huge amounts of nodata for filling the gap. Please provide gdalinfo from bottom.tif and top.tif.

-Jukka Rahkonen-

Lähettäjä: gdal-dev <gdal-dev-bounces at lists.osgeo.org> Puolesta Terra Frost
Lähetetty: torstai 10. marraskuuta 2022 0.21
Vastaanottaja: gdal-dev at lists.osgeo.org
Aihe: [gdal-dev] not enough disk space for gdal_merge even though I have ~1TB free

When I do "gdal_merge -o result.tif bottom.tif top.tif" I get the following error:

ERROR 3: result.tif: Free disk space available is 1011663560704 bytes, whereas 61588097799713184 are at least necessary. You can disable this check by defining the CHECK_DISK_FREE_SPACE configuration option to FALSE.
Creation failed, terminating gdal_merge.

I don't understand. The two TIFs I'm trying to merge are 1.27GB and 64MB and it's saying 61588097799713184 bytes are needed? That's 61.58 PB. Why would gdal_merge think it'd need 61.58 PB?
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