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NFS hangs on mount

I am trying to mount a directory using NFS. The directory is on a separate partition and I am sharing its mount point.

When I try to mount the shared directory on a client (even if that client is the same machine as the server), the mount command hangs (seemingly) forever (I have let it run for 6 hours before stopping it).

The disk containing the shared data does have a lot of data (about 4TB) on it, but I don't think the server should have to examine all that data to mount it remotely.

Is there anything I can do to make this work?

I am on Fedora 17 x64

My /etc/exports:

Code:

/media/Data/Media 127.0.0.1(ro,nohide)

Note that I am using 127.0.0.1 temporarily for testing.
Also note that the drive is mounted at /media/Data and Media is a subdirectory on that drive.

Let me know what extra information I can provide (I don't know much about NFS).

What do you get from these commands on the server?

Code:

showmount -e

showmount -a

rpcinfo -p

This is what I get (note that this is before any mount commands have been issued after starting the server fresh, selinux is in permissive mode and the firewall is turned off)

EDIT: I also tried with selinux disabled and nothing changed

Code:

% showmount -e                                                                                              

Export list for sarah25.home:

/media/Data/Media 127.0.0.1

 % showmount -a    

All mount points on sarah25.home:

 % rpcinfo -p

  program vers proto  port  service

    100000    4  tcp    111  portmapper

    100000    3  tcp    111  portmapper

    100000    2  tcp    111  portmapper

    100000    4  udp    111  portmapper

    100000    3  udp    111  portmapper

    100000    2  udp    111  portmapper

    100024    1  udp  59650  status

    100024    1  tcp  50026  status

    100003    2  tcp  2049  nfs

    100003    3  tcp  2049  nfs

    100003    4  tcp  2049  nfs

    100227    2  tcp  2049  nfs_acl

    100227    3  tcp  2049  nfs_acl

    100003    2  udp  2049  nfs

    100003    3  udp  2049  nfs

    100003    4  udp  2049  nfs

    100227    2  udp  2049  nfs_acl

    100227    3  udp  2049  nfs_acl

    100021    1  udp  4002  nlockmgr

    100021    3  udp  4002  nlockmgr

    100021    4  udp  4002  nlockmgr

    100021    1  tcp  4002  nlockmgr

    100021    3  tcp  4002  nlockmgr

    100021    4  tcp  4002  nlockmgr

    100005    1  udp  20048  mountd

    100005    1  tcp  20048  mountd

    100005    2  udp  20048  mountd

    100005    2  tcp  20048  mountd

    100005    3  udp  20048  mountd

    100005    3  tcp  20048  mountd

    100011    1  udp    875  rquotad

    100011    2  udp    875  rquotad

    100011    1  tcp    875  rquotad

    100011    2  tcp    875  rquotad

Change:

Code:

/media/Data/Media 127.0.0.1(ro,nohide)

To this:

Code:

/media/Data/Media *(ro,nohide)

As a test your mounting your local loopback there are known problems:

http://h10025.www1.hp.com/ewfrf/wc/d...name=c02073470

Ok I tried what you said (changing /etc/exports and using a different machine) and I get the same problem. The client is Linux Mint 15 x64 and the mount hangs indefinitely.

I also tried exporting my home directory, so my /etc/exports now reads

Code:

/media/Data/Media      *(ro,nohide)

/home/mehrlich                *(ro,nohide)

When I try to mount /home/mehrlich from the client machine, it mounts immediately (note that /home/mehrlich is on my system partition while /media/Data/Media is on the raid array). Now, some of the directories under /home/mehrlich are bound directories to folders under /media/Data. When I try to browse to those folders over nfs (after mounting /home/mehrlich on the client), the folders appear empty. However when I browse to those same folders on the server they are populated as they should be.

Just to be clear I am mounting on the client using

Code:

# Hangs forever

sudo mount -t nfs 192.168.1.54:/media/Data/Media /mnt



# Mounts immediately but bound directories are empty 

sudo mount -t nfs 192.168.1.54:/home/mehrlich /mnt

Thanks for the help and sorry about the late reply

/media/Data/Media *(rw,sync,no_root_squash) #you can change rw to ro if you want
/home/mehrlich *(rw,sync,no_root_squash)

try this on your exports mate, then restart nfs server and retry mounting again on your client

Why can't you use automounts? This will mount on demand and will stop that hang issue.