Fix in https://github.com/OSGeo/gdal/pull/12351
You can workaround the issue by adding -oo IGNORE_COG_LAYOUT_BREAK=YES
(actually not needed for cleaning as this doesn't break the layout, but
definitely needed for adding to a COG)
Le 12/05/2025 à 12:01, Javier Jimenez Shaw via gdal-dev a écrit :
Hi
I am trying to clean the overviews from a GeoTIFF, but gdaladdo does
not allow me.
Is that an expected behaviour? Maybe I am missing more options. (there
is no opposite of "-ro")
$ gdaladdo --debug on -clean out/test.tif
GDAL: GDALOpen(out/test.tif, this=0x133058e00) succeeds as GTiff.
GTiff: ScanDirectories()
GTiff: Opened 6978x5110 overview.
GTiff: Opened 3489x2555 overview.
GTiff: Opened 1744x1277 overview.
GTiff: Opened 872x638 overview.
GTiff: Opened 436x319 overview.
GTiff: File open for read-only accessing, creating overviews externally.
ERROR 6: test.tif: Cannot add external overviews when there are already
internal overviews
Cleaning overviews failed.
GDAL: GDALClose(out/test.tif, this=0x133058e00)
$ gdaladdo --version
GDAL 3.11.0 "Eganville", released 2025/05/06
I am running it on a Mac.
Cheers,
Javier.
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