I am trying to copy all the files from a directory (about 200GB of data) on an old USB drive (WD MyBook 3T) to a new USB drive (WD Element 2T). First I used drag & copy from with Windows 10. But Windows 10 skipped many files because permission. So I decided to use rsync under ubuntu. Since some of the files are copied over already, I thought it is going to be rather quick. So I did sudo -i, and cd to the mount directory of the old USB, and run rsync
rsync -avH --delete Backup/ ../EL2T2/Backup/
Lo and behold, 4 days and nights over, the rsync process is still running, running, and running, excruciatingly slooooooow.
The source directory has a lot of hard links, which might contributing to the slowness, but it is very hard to believe it can be this slow.
Any reason for the slowness? Anyway to solve this? Should I just kill rsync and run dd?
BTW, this is ubuntu 18.04.2, and both source and destination are NTFS.