[mpich-discuss] ROMIO with LUSTRE: Must be mounted with option "flock" (Patch proposed)

[Pascal Deveze]

When I run the atomicity test on a Lustre file system not mounted with 
the option "flock", I get the message:

File locking failed in ADIOI_Set_lock(fd 17,cmd F_SETLKW/7,type 
F_WRLCK/1,whence 0) with return value FFFFFFFF and errno 26.
If the file system is NFS, you need to use NFS version 3, ensure that 
the lockd daemon is running on all the machines, and mount the directory 
with the 'noac' option (no attribute caching).
ADIOI_Set_lock:: Function not implemented
ADIOI_Set_lock:offset 0, length 40000

I propose to adapt this message to the requirements of LUSTRE and add 
the message:
If the file system is LUSTRE, ensure that the directory is mounted with 
the 'flock' option.

You will find the patch attached.

Pascal
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