nfsMount - mount: Not supported

[Ben Dart]

For anyone who is interested, I got this working and it was my own fault.

Essentially I was mounting correctly but I was attempting to mount to a location on an SD card .... which is a previous mount. The README specifically says you cannot do this. I was successfully able to mount to '/NFS', not '/D/NFS'

Ben

-----Original Message-----
From: users [mailto:users-bounces at rtems.org] On Behalf Of Ben Dart
Sent: Wednesday, July 08, 2015 8:27 AM
To: Chris Johns; users at rtems.org
Subject: RE: nfsMount - mount: Not supported

Hi Chris,

I suspected that also. Omni-nfs does state that it supports NFS V2. I tried FreeNFS as well which definitely does ....

Ben

-----Original Message-----
From: Chris Johns [mailto:chrisj at rtems.org]
Sent: Tuesday, July 07, 2015 5:26 PM
To: Ben Dart; users at rtems.org
Subject: Re: nfsMount - mount: Not supported

On 8/07/2015 8:51 am, Ben Dart wrote:
> So I managed to get the nfs library to link. I also added a free 
> driver so I think that I am running NFS successfully. Problem is now 
> that I am not able to connect to an NFS server.
> 
>  
> 
> 1.      I have set up a server on an XP computer using Omni-NFS server
> and am able to connect to it from an old linux computer.

Does this NFS server support NFS v2 ? Some more recent server do not support v2 which is all RTEMS currently support.

Chris

> 
> 2.      I tried the following commands in the RTEMS shell:
> 
> a.      mount -t nfs 172.21.3.235:/ /D/NFS
> 
> b.      mount -t nfs 172.21.3.235:c:/test/ /D/NFS
> 
> c.      mount -t nfs 172.21.3.235:/c/test/ /D/NFS
> 
> 3.      I get the following response:
> 
>  
> 
> """
> 
> RTEMS-RPCIOD $Release$, Till Straumann, Stanford/SLAC/SSRL 2002, See 
> LICENSE file for licensing info.
> 
> RTEMS-NFS $Release$, Till Straumann, Stanford/SLAC/SSRL 2002, See 
> LICENSE file for licensing info.
> 
> Trying to mount 172.21.3.235: on /D/NFS
> 
> nfsMount - mount: Not supported
> 
> """
> 
> The folder /D/NFS is created successfully so I know at least that the 
> mount path on the device running RTEMS is correct.
> 
> From a quick look and some printing in the source code I noticed that 
> rtems is mounting (assumably) through something similar to the linux 
> "mount" command under "nfsMount(..." in nfs.c:
> 
>  
> 
> """
> 
>       int varRes = mount(&mtab,
> 
>                     &nfs_fs_ops,
> 
>                     RTEMS_FILESYSTEM_READ_WRITE,
> 
>                     dev,
> 
>                     mntpoint);
> 
>  
> 
>       fprintf(stderr, "BEN NOTE: trying to mount: %d\n", varRes);
> 
>  
> 
>       if (varRes) {
> 
>             perror("nfsMount - mount");
> 
>             goto cleanup;
> 
>       }
> 
> """
> 
> Note that I added the print statement. We are getting an error from 
> the mount command of "-1" which from the following man page:
> http://linux.die.net/man/8/mount
> 
> Doesn't seem to be an actual error code of mount?
> 
>  
> 
> I am trying to use RTEMS 4.9.2 on a powerPC MPC5200.
> 
>  
> 
> Ben
> 
> 
> 
> _______________________________________________
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> users at rtems.org
> http://lists.rtems.org/mailman/listinfo/users
> 
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