[PVFS2-users] open with O_DIRECT, and open large files

[Nathan Poznick]

Thus spake Alban Crequy:
> Hello,
> 
> I am using pvfs2 1.0.1 with linux 2.6.11.5 on x86_64.
> 
> Does PVFS2 support open(2) with O_DIRECT ? I get "ERROR: cannot open
> /mnt/pvfs2/smallfile (Invalid argument)" with O_DIRECT and it works
> without O_DIRECT.

No, PVFS2 does not support O_DIRECT.

> My software use:
> fd = open("/mnt/pvfs2/bigfile", O_RDWR);
> 
> Does PVFS2 support large files?

Yes it does.  As with any other filesystem, you must compile with the
proper flags (-D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
-D_LARGEFILE64_SOURCE) and open with O_LARGEFILE.

-- 
Nathan Poznick <kraken at wang-fu.org>

The true way to gain much, is never to desire to gain too much. -
Francis Beaumont

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