I use iDrive Cloud, one of their two versions of s3 storage. Their limit for multi-part uploads is 1,000 chunks (not 10,000 like others). A year or two ago I noticed I was having trouble uploading large files, but the issue was corrected by adding "max_upload_parts=1000" to the config file. Recently, this line of the config file seems not to have any effect and chunk sizes are just the default of 5MB regardless of the origin file size, causing uploads of files larger than 5GB to fail. As a workaround I used "--s3-chunk-size=15MB" directly in my copy command to force a chunk size that would bring the max parts below 1,000, but otherwise the config line regarding the maximum number of parts does not have any effect. Suspect a bug.
Run the command 'rclone version' and share the full output of the command.
rclone v1.62.2
os/version: Microsoft Windows 10 Home 21H2 (64 bit)
From a August 2021 email from iDrive after any file I attempted to upload with more than 1,000 chunks started over in a forever loop attempting to upload the file, I emailed iDrive while troubleshooting. I changed the rclone config file as detailed above and haven't had any issues with large files until recently, with the same behavior now as before I added the line where chunks are back to 5MB regardless of file size, unless forced with an explicit flag.
Which command would you like me to use the -vv with? This command:
.\rclone.exe copy "C:\Users\Wanderer\Downloads\Movie" "wanderer:wandereridrive/Media/Movies/" -v -P
Well, I tested it and it worked perfectly. Split an 11.5GB file into 12MB chunks. I did upgrade to the latest rclone recently. Maybe an older version had a bug? It's working as advertised. Sorry for the erroneous troubleshooting.