KB Article #177135
NFS | Transfer is remaining in sending status
Problem
Sending files located on a NFS mount
Transfer is remaining in sending status
Resolution
Be aware that the documentation about supported NFS is not related to cluster only.
When using NFS with CFT (or CFT have to allocate files from NFS location) Mount options for the NFS MUST have the file locks set synchronous, and the nodelay option is mandatory. It is not available with all version though.
lock, delay are part of the mount option