Re: Question related to XFS sync , especially fsync

["Gopala Krishna" <gopalakrishna.n.m@gmail.com>]

Is there any XFS call from user level to flush metadata  for a given file or
complete log  to disk?

Thanks,
Gopal.

On 1/16/08, Nathan Scott <nscott@aconex.com> wrote:
>
> On Tue, 2008-01-15 at 09:18 -0600, Eric Sandeen wrote:
> >
> > > I have lot of code getting in to that. To explain that I have to go
> > through
> > > that complex part of the code to explain in detail.
> > >
> > > Basically once we get indoe number for a given file from the
> > available
> > > system call, we only depending upon the XFS layout and it's
> > structure.  We
> > > are  reading super block from a particular disk offset  and
> > calculating
> > > address for inode offset and its address on the disk and reading
> > directly
> > > from the disk offset. We are totally depending on XFS on disk
> > layout.
> >
> > Can I ask why you are doing this? :)
> >
>
> This would be good to know.  If you absolutely must use inode numbers
> instead of path names, you should use the "by-handle" interface (like
> xfsdump, xfs_fsr, etc) and not use the ondisk structures directly -
> doing so is always "broken by design" and you'll get little sympathy
> here for doing so. :)
>
> cheers.
>
> --
> Nathan
>
>


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