is at rambler-co.ru
Fri Sep 25 12:09:09 MSD 2009
On Fri, Sep 25, 2009 at 10:10:45AM +0400, Igor Sysoev wrote:
> 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.
Sorry, this patch is wrong. Try the new attached one.
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