NFS export of TMPFS

[Weikuan Yu <wyu@ornl.gov>]

Hi,

I am trying to export a memory-based file system via NFS. However, I am 
not able to do with either ramfs or tmpfs. Here is the reported error. 
Is there a protection in NFS server to prevent this?

I also tried to use ramdisk. That worked, however, I am not able to 
create a ramdisk of more than 1G. I need to create a ramdisk that is 2G 
or more. Any insights on this.

I will be happy if I can get solutions for either of the approaches. Or 
is there any other alternatives?

Thanks,
Weikuan

[root@yoda1 ~]# mount -t tmpfs none /nfs
[root@yoda1 ~]# df -h /nfs
Filesystem            Size  Used Avail Use% Mounted on
none                  506M     0  506M   0% /nfs
[root@yoda1 ~]# ssh node0002
-bash-3.00# mount 192.168.1.254:/nfs /nfs
mount: 192.168.1.254:/nfs failed, reason given by server: Permission denied

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