CIFS uid/gid mismatch caused Permission denied on files created via NFS
(cert.key, .gnupg, etc. owned by uid=99 with mode 600/700; SMB user
can't access them server-side). NFS maps uid/gid directly, avoiding the
issue. Use hard mount so spin-up blocks briefly instead of returning EIO.
SQLite (Calibre Notes DB) fails with SQLITE_IOERR on soft NFS when unRAID
drives spin down. Replace Docker NFS named volumes with bind mounts to
/mnt/nas_media (CIFS via systemd automount), same pattern as backrest and
filebrowser-colleen-hd. systemd handles drive reconnection independently.
poprhythm