I have a Linux(CentOS) server, the OS+packages used around 5GB. Then, I transferred 97GB data from a Windows server to two folders on this Linux server, after calculated the disk usage, I see the total size of the two folders is larger than the disk used size.
Run du -sh on each folder, one use 50GB, the other one use 47GB
But run df -h, the used space is 96G. (50GB + 47GB + 5GB) > 96GB
Is there any problem? Those two folders contain lots of files(1 million+). Thanks.