[RTEMS 4.10] NFS mount fails with 'Registering NFS driver failed' message

[Jose L. Marcos]

Thank's Joel

Adding '#define CONFIGURE_MAXIMUM_DRIVERS 15' to my system.h config file 
make me one step further...

I still get a non-0 return value for mount_and_make_target_path. I 
printed errno value before 'assert(err == 0)' line and it's errno=22 
(EINVAL: invalid args); but can't tell which API function returned this 
errno.

Still puzzled !

Regards,

*José L. Marcos*
CNES - DSO/DV/IF
18 avenue Edouard Belin - bpi 3517
31401 Toulouse cedex 9
Tél: +33 (0)5 61 27 41 13
On 8/12/20 3:09 PM, Joel Sherrill wrote:
>
>
> On Wed, Aug 12, 2020 at 7:20 AM Marcos Jose-Louis 
> <Jose-Louis.Marcos at cnes.fr <mailto:Jose-Louis.Marcos at cnes.fr>> wrote:
>
>     Hi
>
>     I'm trying to mount a NFS partition from a server on a sparc board.
>     My app is basically configuring the network, and trying to mount
>     the NFS server share using mount_andmmake_target_path() API.
>
>     err = mount_and_make_target_path(
>             "6331.1150 at 10.160.7.217:/home/marcosjl/",
>             "/nfs",
>             RTEMS_FILESYSTEM_TYPE_NFS,
>             RTEMS_FILESYSTEM_READ_WRITE,
>             NULL);
>     assert(err == 0);
>
>     It fails miserably :
>
>     Network initialization OK.
>     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.
>     Registering NFS driver failed -
>
>     When digging in ./cpukit/libfs/src/nfsclient/src/nfs.c, It seems
>     that call to 'rtems_io_register_driver' is not successful,
>     probably related to misconfiguration of my app ?
>
>     This is the excerpt of my system.h file (the one containing the
>     configuration directives to RTEMS) :
>
>     /* Specific configuration for NFS */
>     #define CONFIGURE_FILESYSTEM_NFS
>     #define CONFIGURE_MAXIMUM_MESSAGE_QUEUES 20
>     #define CONFIGURE_MAXIMUM_SEMAPHORES 15
>     #define CONFIGURE_NUMBER_OF_DRIVERS 5
>
>
> I don't think this is the right configuration parameter. It should be 
> CONFIGURE_MAXIMUM_DRIVERS. I don't know if 5 is the right number but 
> you need 1+ driver slots empty beyond the static drivers configured to 
> account for the dynamically installed one.
>
> https://git.rtems.org/rtems/tree/cpukit/sapi/include/confdefs.h?h=4.10#n856 
> should be the section of code you are tripping.
>
> That should get you beyond this error.
>
>
>     Not sure of what's going on here (I'm pretty new to RTEMS !). Is
>     it the correct way to configure resources expected by NFS client ?
>     (as per what's specified in ./cpukit/libfs/src/nfsclient/README -
>     section "RTEMS Resources Used Byy NFS/RPCIOD")
>
>     Thank's in advance...
>
>     Regards,
>     José L. Marcos
>
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