Hello all. I converted my server from Fedora Core 3 to CentOS 4.1 and I've been slogging unsuccessfully through an NFSv4 problem. I'm using the same configuration for NFS that I had in place on FC3 that worked. On the server, I have the following data structure: /data /data/archive /data/pictures /data/music Each is a separate ext3 filesystem mounted with rw,acl. /etc/exports presents all of these filesystems properly: # exportfs -v /data/pictures 172.17.17.0/27 (rw,wdelay,insecure,root_squash,no_subtree_check,anonuid=65534,anongid=65534) /data/archive 172.17.17.0/27 (rw,wdelay,insecure,root_squash,no_subtree_check,anonuid=65534,anongid=65534) /data/music 172.17.17.0/27 (rw,wdelay,insecure,root_squash,no_subtree_check,anonuid=65534,anongid=65534) /data 172.17.17.0/27 (rw,wdelay,insecure,root_squash,no_subtree_check,fsid=0,anonuid=65534,anongid=65534) All the the appropriate services are running (portmap, nfs, rpcidmapd). I've tried this with and without iptables enabled so I've ruled out firewall issues. When I mount the filesystem on the client, none of the "sub" mountpoints shows its content: # mount -t nfs4 server:/ /mnt/server # ls /mnt/server archive lost+found music pictures # ls /mnt/server/archive # Except that there's 15G of data in /data/archive on the server. File operations in /data that don't traverse the server-side mountpoints work fine (i.e. I've created /data/foo and performed reads and writes in there on the client). I know that this setup worked in Fedora 3 so I'm unable to account for the operational differences. Anyone have any thoughts? - Jason