[PVFS-users] opendx, fgets, big files problem

[Rob Ross]

Hey,

Can you strace the app and see what system call it's trying to use?

Thanks,

Rob

Marcelo Matus wrote:
> Dear PVFS list:
> 
> We are trying to read a large binary file from a PVFS directory
> using OpenDx (which uses fgets to read) and we get the
> following message
> 
>  ll_pvfs.c, 610): ll_pvfs_file_read failed on 311457
>  pvfs_map_userbuf: map_user_kiobuf failed
> 
> while OpenDx reports that the end-of-file has been reached.
> 
> The  error occurs after reading around 8MB,  and the same
> file shows no problem when checked using 'md5sum'. pvfs-ping
> reports no problem, and all the other applications seem
> to be running fine.
> 
> OpenDX also opens the same file with no problem after copying it to
> a local filesystem such as /tmp.
> 
> The pvfs version is 1.6.3, kernel version Linux 2.4.21-27.0.4.ELsmp,
> OpenDX 4.3.2.
> 
> Any ideas?
> 
> 
> Marcelo