Re: Is mkdir guaranteed to be 'atomic' ??

[Marc W]

> > 
> >     I can handle it if there is a case where both fail, but is
there a
> > case where both can SUCCEED ?? 
> 
> What do you mean 'both succeed'?

    My understanding is that, on non-broken filesystems, calls to
mkdir(2) either succeed by creating a new directory, or fail and return
EEXIST (note: excluding all other types of errors :-))

    However, NFS seems to have issues, so the question is:  could both
mkdir(2) calls actually succeed and claim to have created the same
directory (even if it is?), or is one ALWAYS guaranteed to fail, as on
a normal fs.

    marc.



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