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Why do I get 'Input/output error' reading a symbolic link in a NFS mount?

I use scp to copy some files to a XFS local partition on a file server host and create a symbolic link to new deployed files locally though SSH. That partition is exported through NFS and mounted on several hosts.

If I check for the deployed files and symbolic link locally in the file server everything is fine, but when I try to see the deployed files or copy them through NFS I get several some Input/output error in the just created symbolic links. If I retry the operation, it will finally succeed after some attempts.

Any clue on why is this happenning?