[mpich-discuss] mpich2 and pvfs2 error

[Dorian Krause]

Hi Rob,

I mixed two pvfs2 versions (2.7.1 and 2.8.1). In between the interface 
for PVFS_sys_create changed  and I compiled mpich for pvfs2 2.8 but I 
linked agains a 2.7 library ...

Thanks for your help!

Regards,
Dorian


Dorian Krause wrote:
> Rob Latham wrote:
>> On Fri, Jul 24, 2009 at 02:45:53PM +0200, Dorian Krause wrote:
>>  
>>> /mnt/pvfs2 kraused$ /home/kraused/mpich2-1.1.1/bin/mpiexec -np 1  
>>> /home/kraused/bnchmk/Filesystem/mpio pvfs2:///mnt/pvfs2/abc
>>> [E 14:42:04.891854] invalid (NULL) required argument
>>> [E 14:42:04.891992] PVFS_isys_create call: Invalid argument
>>> [E 14:42:04.892686] invalid (NULL) required argument
>>> [E 14:42:04.892717] PVFS_isys_create call: Invalid argument
>>>     
>>
>> OK, take two!
>>
>> That 'invalid (NULL) required argument' message comes from this
>> stanza:
>>
>> if ((parent_ref.handle == PVFS_HANDLE_NULL) ||
>>          (parent_ref.fs_id == PVFS_FS_ID_NULL) ||
>>          (object_name == NULL) || (resp == NULL))
>> {
>>     gossip_err("invalid (NULL) required argument\n");
>>     return ret;
>> }
>>
>>
>> - 'resp' can't be null: we're declaring it on the stack in ROMIO
>> - 'object_name' is the filename: probably ok
>> - 'parent_ref' seems like the most likely suspect. 
>> I wonder if something is getting confused with the multiple /// in the
>> path name?  What does '/proc/mounts' 
>
> The relevant line in /proc/mounts is
>
> tcp://cub:3334/pvfs2-fs /mnt/pvfs2 pvfs2 rw 0 0
>
>> or your fstab 
> This is the line:
>
> LABEL=/pvfs             /pvfs                   ext3    
> defaults        1 2
>
>> or your pvfs2tab
>>   
>
> I don't have a /etc/pvfs2tab, only the /etc/fstab but I suspect this 
> is normal ?!
>
>> entry look like?
>>
>> What happens if you call your test with 'pvfs2:/mnt/pvfs2/abc'  ?
>>   
>
> The same,
>
> /mnt/pvfs2 kraused$ /home/kraused/mpich2-1.1.1/bin/mpiexec -np 1 
> /home/kraused/bnchmk/Filesystem/mpio pvfs2:/mnt/pvfs2/abc
> [E 16:37:17.811641] invalid (NULL) required argument
> [E 16:37:17.811782] PVFS_isys_create call: Invalid argument
> [E 16:37:17.812253] invalid (NULL) required argument
> [E 16:37:17.812279] PVFS_isys_create call: Invalid argument
> MPI_File_open returned -524286
> MPI_Error_string(-524286) = Undefined dynamic error code
>
> In fact, if I touch /mnt/pvfs2/abc before calling the test, every 
> works. I can also do
>
> /mnt/pvfs2 kraused$ /home/kraused/mpich2-1.1.1/bin/mpiexec -np 1 
> /home/kraused/bnchmk/Filesystem/mpio ufs://mnt/pvfs2/abc
> MPI_File_open returned 0
> MPI_Error_string(0) = No MPI error
>
> without any problems.
>
> Thanks,
> Dorian
>
>
>> ==rob
>>