[lustre-discuss] Renaming or Moving directories on Lustre?

[Grigory Shamov]

Hi All,

What happens if a directory on Lustre FS gets moved with a regular CentOS7 mv command, within the same filesystem? On CentOS 7, using mv from the distro, like this, as root:
 
mv /project/TEMP/user  /project/XYZ/user
 
It looks like the content gets copied entirely. Which for large data takes a large amount of time.
Is there a way to rename the Lustre directories (changing the name of the top directory, only without moving every object in these directories)?  Thanks!


-- 
Grigory Shamov 
Site Lead / HPC Specialist 
University of Manitoba and DRI Alliance Canada