Igor Sysoev is at rambler-co.ru
Fri Sep 25 10:10:45 MSD 2009

On Fri, Sep 25, 2009 at 09:37:37AM +0400, Igor Sysoev wrote:

> On Thu, Sep 24, 2009 at 10:34:38PM +0200, Alejandro Mart??nez wrote:
> > > pwrite() on file system should write all data at once (at least I see it
> > > for the first time). What file system do you use ?
> > 
> > 
> > Return Value
> > value   pwrite() was successful. The value returned is the number of 
> > bytes actually written. This number is less than or equal to nbyte.
> > -1   pwrite() was not successful. The errno global variable is set to 
> > indicate the error.
> > 
> > I don't see anywhere that the data should be written all at once. If it 
> > was like that, then why whould it return the bytes written?
> The partial or short write/pwrite/writev()s are usual for sockets, pipes,
> etc.  However, they are not so usual for disk files and may be caused
> by some limits: rlimits, qoutes, or free space.  I think that retry
> will not be successful, but will return errno explainig the cause.

Could you try the attached patch. It retries short write.

Igor Sysoev
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