gdalwarp falsely claims it doesn't have enough disk space (32 bit Linux)

[kwaters]

When running gdalwarp I get a message that there isn't enough space, but there is. Oddly, changing the destination file name changes the behavior. The failure looks like this (there are 3.2 Tb free on the disk): gdalwarp -of GTiff ./testdem_1_10_2_11.tif ./testdem_1_10_2_01.tif ./testdem_1_10_2_00.tif ./testdem_1_10_2_10.tif ./testdem_1_10.tif

Creating output file that is 18923P x 14430L.

ERROR 3: Free disk space available is 323878912 bytes, whereas 1092235560 are at least necessary.

However, if I change the name of the output file slightly, it works, as in the following: gdalwarp -of GTiff ./testdem_1_10_2_11.tif ./testdem_1_10_2_01.tif ./testdem_1_10_2_00.tif ./testdem_1_10_2_10.tif ./testdem_1_10_nocomp.tif

Those input files are floating point DEMs. A tarball of the files is at ​ftp://coast.noaa.gov/temp/kwaters/dems.tgz. Adding compression as a creation option gets me around this, but also makes the output file about 3 times bigger with LZW alone or 1.8 times bigger with PREDICTOR=3. Running this on a 32-bit RHEL machine.

[Even Rouault]

In 36866:

Fix GetDiskFreeSpace() on 32bit Linux to avoid 32bit overflow when free disk space is above 4 GB (fixes #6750)

[Even Rouault]

In 36867:

Fix GetDiskFreeSpace() on 32bit Linux to avoid 32bit overflow when free disk space is above 4 GB (fixes #6750)

[Even Rouault]

The issue was specific to 32 bit Linux. You can workaround the issue by disabling the check for free space by adding "--config CHECK_DISK_FREE_SPACE NO" to your command line

[Even Rouault]

In 36868:

VSIUnixStdioFilesystemHandler::GetDiskFreeSpace(): use statvfs64() when available (fixes #6750)

[Even Rouault]

In 36869:

VSIUnixStdioFilesystemHandler::GetDiskFreeSpace(): use statvfs64() when available (fixes #6750)

[Even Rouault]

In 36870:

VSIUnixStdioFilesystemHandler::GetDiskFreeSpace(): use statvfs64() when available (fixes #6750)

[Even Rouault]

In 36871:

Unbreak MacOSX build failure due to previous commit (fixes #6750)

[Even Rouault]

In 36872:

Unbreak MacOSX build failure due to previous commit (fixes #6750)

[Even Rouault]

In 36873:

Safer detection of statvfs64 presence to avoid issues on other Unixes (fixes #6750)

[Even Rouault]

In 36874:

Safer detection of statvfs64 presence to avoid issues on other Unixes (fixes #6750)