Dell Storage Manager 2020 R1 Administrator's Guide

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Cannot Mount NFS Export


Description	When attempting to mount an NFS export, the mount command fails due to various reasons such as: Permission denied. FluidFS cluster is not responding due to port mapper failure - RPC timed out or input/output error. FluidFS cluster is not responding due to program not registered. Access denied. Not a directory.
Cause	The client connects using NFS/UDP and there is a firewall in the way. The client is not in the NFS export list, the FluidFS cluster could not recognize the client system through NIS, or the FluidFS cluster does not accept the identity the client provided. The FluidFS cluster is down or has internal file system problems. The mount command got through to the port mapper, but the rpc.mountd NFS mount daemon was not registered. The client system’s IP address, IP range, domain name, or netgroup is not in the NFS export list for the NAS volume it is trying to mount from the FluidFS cluster. Either the remote path or the local path is not a directory. The client does not have root authority or is not a member of the system group. NFS mounts and unmounts are only allowed for root users and members of the system group.
Workaround	If the issue is due to NFS/UDP and firewall, check whether the client mounts using UDP (this is usually the default) and there is a firewall in the path. If a firewall exists, add an appropriate exception to the firewall. If the issue is due to permissions: Verify the path you provided is correct. Check that you are trying to mount as root. Check that the system's IP address, IP range, domain name, or netgroup is in the NFS exports list. If the FluidFS cluster is not responding due to a port mapper failure: Check the FluidFS cluster status. Check the network connection by trying to NFS mount from some other system. Verify whether other clients experience the same problem. If the FluidFS cluster is not responding due to the program not being registered, check if the port mapper on your client is up. If the issue is due to access denied: Get a list of the FluidFS cluster exported file systems using the command: showmount -e `<client_VIP_or_name>` Check the system name or netgroup name is not in the user list for the file system. Check the file systems related to the NFS export through Dell Storage Manager. If the issue is due to the directory, check the spelling in your command and try to run the mount command on both directories.