I am getting the following error at the same point in a large backup. The backup is of a VM. There are two snapshots already. The destination contains many backups (single destination multiple sources).
It gets to 98.2% then fails with:
2020-11-18 01:42:46.281 INFO UPLOAD_PROGRESS Skipped chunk 16214 size 7784940, 11.69MB/s 00:02:05 98.2% 2020-11-18 01:42:46.917 ERROR UPLOAD_CHUNK Failed to upload the chunk 23bc91e8225541af5d131e7d3e0319ed61644fb4849964e54d51b65d80471cbf: rename /Volumes/MACBOOK/BACKUPS/chunks/23/bc91e8225541af5d131e7d3e0319ed61644fb4849964e54d51b65d80471cbf.jvsfkrkf.tmp /Volumes/MACBOOK/BACKUPS/chunks/23/bc91e8225541af5d131e7d3e0319ed61644fb4849964e54d51b65d80471cbf: input/output error
Neither the source nor the target of the rename exist (so I presume the upload failed in some undetected way).
The destination is on a mounted (on macos) SMB drive (shared from a USB disk on a windows machine) across a gigabit lan. The destination has 2TB free space, so its not an out of space issue (my first thought).
duplicacy check -all reports all good (as I would expect)
What is odd is that it consistently fails at exactly the same point. Could it be open files or some other resource limit being reached?