I have setup XRootd cluster in our supercomputer center to distribute and access data from
Lustre filesystem to different systems/places, as setup is one
2x data server which Lustre filesystem available on all nodes.
XRootd user id being defined for lustre filesystem so to able to go through directories.
As XRootd service runs with user and group
xrootd it faces
permission denied on folder and files which has no enabled bit for
read on files/folders, e.g.
drwxr-x--- 7 b324025 bb0820 4096 Jan 27 11:34 ISIMIP
also from xrootd.log
ofs_opendir: root.26098:[log in to unmask] Unable to open directory /data/bb0820/ISIMIP; permission denied
The filesystem size is 55PB and thousands of groups there are, and
even adding xrootd user to groups, there are some folder/file which has
read enabled bit on
Lustre filesystem gives full control to user
root, is there anyway to run xrootd so to be seen as root to lustre? this way everything become accessible at least for read.
I have seen document guideline for Xrootd configuration that running xrootd with root is not recommended.
I would appreciate any recommendations/suggestion
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